HOW TO MAKE 5.0L FORD POWER! FORD RACING E303 VS NEW SUMMIT E303 PLUS-IS THE E303+ REALLY BETTER? 

Love the sbf content

I get excited for all the 302 Ford and 4.8L LS content you make, Richard. This info is invaluable to making build estimates of my little 2.4L 22RE inline 4!

You did a good job showing the different camshafts' real potential with the upgrades. Those things are typically upgraded also when upgrading for more power

Wow didn't know Summit was doing their own Ford Motorsport inspired cam lineup, very cool! Thank for the info and hope to see more 👍

Looking forward to the testing on the B and F versions of the plus cams. Will also be good to see the comparisons between the original E, B and F cams on the same engine. Want to see what those curves look like, comparatively.

Thanks for testing the Blue Print Heads, I have a similar setup in my F150 except with a 650 Demon and a Trick Flow Stage 1 cam.

Was anxiously waiting for this video. My current set up is a stock short block. 180cc heads. E cam. Always wondered what it made more less n/a. I spray 150 on it and runs bottom 11’s in my fox. Thanks for the video!

Presentation is the best I have seen for this type of channel, I am a newbie restomod enthusiast

What a blast from the past! I had an E cam in my LX 5.0 back in the day. I think I ran it with a cobra intake and 3:73s out back.

VERY interesting. WAY back in the day I had a 1987 TBird TurboCoupe that I did a complete 1989 5.0 HO and 5 speed swap. I mean complete with modified wiring harness and factory type installation. Plan was stock swap but decided to mildly port the exhaust ports and ran into a situation requiring a rebuild. Ended up with a mildly ported head and stock HO intake and an E303 cam. Machine shop had a set of aftermarket dual springs that I was going to run UNTIL we put them on the scale and they were slightly worse than the 90k mile stock springs. Dyno'd at 249rwhp @ 4600rpm and 314rwtq at IIR 3500rpm. Car ran 13.77 @ 104mph on street radials (real not DRs). on a 1.9 60ft. Figured the stock intake was the problem so swapped in an Edelbrock but no improvement. Either it was the stock ported heads or valve float... IDK... but should have made power well into the mid 5500s. Nice vid. Cheers!

Thank you ! For the old school 5.0 Ford testing it’s all ways nice 😊

looking forward to the f303 cam comparison!Gret work as always!

It seems like this was a very good combo to start with. If I remember correctly, the stock 302 in your configuration makes about 275 at the top where this one, with the Blueprint heads, makes 368 with the stock cam. That’s huge! Either of the E303 cams then make a nice further increase that you’d notice on the street or at the track. Looking forward to the EFI results, but how about a 327, 331, or 347 shortblock? And maybe some better flowing intakes than the non-air gap? I enjoyed my ‘89 notchback bought new back in the day, but any of these combos would have been night and day better! Thanks Richard!

Excited to see those other Summit alphabet cams! I just bought the F303 plus for my 5.0 with a set of AFR heads. Totally looking forward to the power gains over my B303 and GT40P setup currently. I bought the cam on a total whim before anyone had good info on them, so I’m stoked to see how good the F303 plus is. Keep it up!!

Cant wait to see the efi to carb comparison, im building a 302 atm and cant wait to see the info.

I really appreciate all the videos you make. It answers many questions. I’d like more info on some boss 302 engines. I’m really wanting to clone one.

can't wait for the bigger cams. Good stuff

Good stuff. I'd love to see the comparison of the alpha bet cams with GT40p heads with upgraded springs vs. The aluminum heads. It seems that's something that would be found on the street and the track and a realistic comparison.

I'd like to see these cams compared to the trick flow and extreme energy cams!

I love the thought of a boneyard Explorer 5.0, those heads, the Summit cam, a 4 barrel, RPM intake, and headers for an easy, bolt on 400hp engine. For probably less than 3 grand. Drop that in any Fox body, early Mustang, Falcon, Maverick, etc, and haul ass.

I will love to see the video of the f303 to the rest of the 303 series cam thank you Richard

Great stuff! Thanks for the data. Looking forward to all the other cam tests. I’m currently running the Summit F303+ in a stock 302 GT40 heads.

Very similar build to the sbf going in my Supra. Excellent!

I know a lot of guys that try to cam their stock block with a gt40p heads with an intake combo... Be nice to hear some of those numbers with cam swaps..on a factory rotating assembly

Great test! Do you ever take any vacuum readings at idle? I'd also be interested to hear the idle sound for the various combinations. Thanks for doing these comparisons.

It would be interesting to see a comparison with the Comp Cams 270 Magnum 31-414-3 as this is very similar to the E-303 with .500 lift and duration of 224 but it is a flat tappet cam with the regular (non H.O.) Ford firing order. Back in 1991, this was the biggest cam that I was able to run while still being able to pass emissions in my ‘79 5.0L Mustang.

Nice stuff and yes I'm very interested in f303 cam. I had a hydraulic flat tap version of it 512 lift 288 duration in my high school ride little 302 made lots of noise in it.

Great video Richard as always, I was wondering if you can test the 5.0L Baby Crower camshaft Thanks

Great presentation! I commented several vids back, I believe on the 300-350hp 302 combos that you don't need to do a cam swap(JUST HAVE A GOOD SET OF HEADS) to achieve close to 350hp, and hear you eclipsed that. Not everyone wants to do a cam swap at that level. When I come to street engines I'm from the old school thought of running JUST ENOUGH CAM. Drivability, engine responsiveness, and strong low, mid-range, are important. Plus with a good set of heads you can squeeze some extra top end power from a mild cam. The stock HO cam is a good piece, and would've been considered back in the 70s as a stage 1 even. The E303 was always the go to cam for me back in the day for the aforementioned reasons. With the E303 you can make a really great dual purpose combo(street/strip). Also has great vacuum signal (great for carb combos) and also I didn't notice any huge difference in fuel consumption between the stock cam vs the E303 cam(especially doing regular driving). Another plus. In my opinion too many people OVER CAM their little street 302's and wonder why they are not pleased with the performance. When it comes to cams, and performance level, you can OVER CAM if your not careful. Engines built for strictly track duty and max power may be a different case. Drivability and low to mid-range may not be as important then.

I'm fixen to install a set of the Blueprint Heads (Part # HP9008) On a 1990 5.0 HO that's been carbed with the Edlebrock performer duel plane intake and Summit 600 carb. I am concerned about the larger valves hitting the stock pistons and my oldschool blackjack headers working with the angle of the plugs. All of this going in my 1978 Mustang ll.

We've been waiting for some new SBF videos!

Can't wait to see the cam comparison of the Summit cams. Would also like to see how all those compare to your favorite Comp XE274 and how they are all affected with the EFI setup. As always, great content!!

Yes I'd like to see you test these cams and whatever you choose on a 5.0 fuel injected, especially a 95 Cobra engine. I bought one last summer with pretty high mileage and wondering which way to go and or how much money 💰 do I need to spend 🙃. Thanks for the video 📹 🙃

Nice power from the stock cam. I wish I still had my Lunati cam card from back in the day. I also had a b for a while.

I shouldn't be this excited, but I am. 😆 Been curious about these cams since I stumbled onto them on Summit

More info on the Percy's Adjustable jets please. Thanks, love the sbf content!

It seems from most of the comments i have read, people seem to think it was mainly the cylinder heads that made all of this power? Although cyl. heads are a huge improvement, and would allow a longer dur. cam to work better by pulling more air in through a stock Efi. Intake. You must remember that the stock heads flow around 160cfm., but the stock Efi. Intake also flowed around 160cfm per runner. So this test utilized one of the best flowing/working carbed intakes in the 1,500rpm to 6,500rpm range, AND good flowing, higher Cc runner cyl. Heads, along with an AWESOME exhaust system, its this Whole Combo, that unlocked the camshafts hidden power!

Back in the day, my notchback was a daily driver, I ran the e cam with 1.7 rockers, The drivability was good being a 110 lsa. I drove that car all over and on long trips. cam snobs made fun of me aLpHaBeT cAm... it held it's own nicely along with explorer heads, gears ect, against the (new at the time ls6's. As you see on the dyno, the old-school e cam made its peak power just below the factory efi mustang rev limiter. Mid range was exceptional. Not considered powerhouses nowadays, but impressive combos.

Used to run a stock 302 cam with 351 heads. Back in the day…. Good power and good gas mileage.

I appreciate the SBF stuff. I would love to see a comparison of the Trick flow stuff as well. I rarely see anyone dyno Trick Flow head or cams. I run a 289 with the 11R 170 heads and a stage 1 cam. The numbers on the stage one are in between the E303 and the Summit cam. Split pattern as well.

The other difference between the E cam and the a E plus from Summit is which 2 of the cams won't break. The Ford have been proven to not do that but I have no input on the summit plus cam.

Looks like the wider lobe separation trades hp and tq for all the gains up top. Let’s see more testing sir!!!

Would love to see some testing of the Anderson cams

Thanks Richard. Always love the Ford stuff. I may be wrong, but I basically see the two E cams as the same power out put. Yes, the Summit cam has a few more ponies at the top end, but I am willing to bet the Ford cam will be easier on the valve train and will run practically forever. This proves to me that Ford really put an effort into their cams and are of great value

King Lord God B-Cam will crush all comers. Never has a cam been so finely sculpted. Truly a master class in excellence. Tread at your peril.

I'm amazed it made so much with the stock cam, especially compared to other tests you've done. Imagine if it came that way from the factory.

I wish you had ye olde XE274HR in the mix.

Perfect video was curious what was the difference..

great video,man!

Nice so this old school 302 SBF is making what a gen 1 coyote is making.

Thanks for having old school ford stuff Richard. i cant afford any new stuff. Lol

Hi first off great information in your videos I have a stock build roller bottom end with gt40p heads e303 airgap and Holley sniper EFI what kind of heads would you recommend to replace the gt40p heads for more power I'm just worried about the piston to valve clearance of 202s or 205s I'm running rebuilt cobra crane rockers

Hi Richard great job on the Fords how about doing a 6.2 L truck motor

should test the Jones 210 cam that David Vizard talked about in his E7 videos against these. i think it would smoke them.

Maybe the 110 LSA explained the E303 advantage down low compared to the 113 of the E303+.

Hey Richard if you do the efi manifold comparison could you throw the truck long runner in there for giggles

That was a more than interesting test. Does any one know what the lift at TDC is for these cams. My own trend over the past 30 years is to try cams with more lift on the Inlet than the exhaust, more Ex. timing (10 Deg. seems enough) then more lift on the Ex. @ tdc. What I try to do is match more radical cams at the top end but give greater power at lower engine speeds. Can be very fusy on the exhaust though.

This is probably why my engine likes a 1.7 rocker on the exhaust and a 1.6 ratio on the intake.

"44 HP from a cam change. Oh c'mon Richard."😁. Razzin ya for your skeptical mind Sir. But Nice work for sure good buddy. The best HP Summit E303 + cam is a sure exactly like the Restrictor Plate, NASCAR style cam Currie used in his 352 HP 2bbl 293 cube SBF 66 Fastback.

Can't wait for the fi to carb comparison, me running gt40p stuff makes me really curious about it

I’m always feel like I’m surprised at the gains a 5.0 makes but I remember back in the day it seemed easy to find power locked away in these engines. I know everybody venerates the SBC (rightfully so) but I don’t know if they realize how fun and cheap the 5.0 was to dink around with.

Not all that impressed with the Summit E303 plus cam given the significant increase in lift and exhaust duration over the now ancient Ford Racing E303. Certainly not worth yanking the old E303 for.

Would love to see the F303 and the F303+ compared with boost, especially since a lot of people still use the old F cams in boosted engines!

Would have liked to see this test with a gt40/gt40p head

I run a x camshaft and I like it. It's a rowdy cam.

Popped up again I think with AOD and stock exhaust the FORD cam wins. extra exhaust would not help much or maybe it would but I would not trade off the 3000 rpm torque in a LTD or rock crawling bronco ( I own both)( going to take the efi motor and aod out of the LTD and replace the carb motor in the bronco) so great useful test

Awesome as usual! Just when my bank account shows some promise, there’s a cam I should buy…

I just got a set of these blue print heads on eBay they are bare other than valve guides I was wondering could you recommend a valve and valve spring kit that would work they are the 190cc heads

Thanks for this Richard. It sure looks to me like all the crybabies saying the alphabet cams are outdated garbage are way off. E303 was my street favorite with oe (e7/gt40/p) heads back in the day

There used to be a g-303 on LMR for a short period of time I wonder what happened to that

How does the sound compare? Personally if I were running an E cam or similar I’d be interested in how it sounds. Loop and all

The HO cam did better than I thought. Those Blueprint Engines cylinder heads must be fairly decent.

@Richard Holdener This shows how well the old E303 has aged. It was able to hold its own quite well. I think that E303+ summit cam would be a little too much on the lift for what we were doing years ago with stock e7te heads. Now with modern stuff that all goes out the window.

The Summit cam would likely show a larger PERCENTAGE increase in power under the curve on an engine running stock E7 heads. Factory iron heads are particularly weak in exhaust port flow, hence the uncommonly large 11 degrees additional exhaust valve duration in this cam. The Blueprint heads are better balanced between intake and exhaust port flow, so they would likely be optimized with a cam having less duration split between intake and exhaust. Performance of various cams is less about "better or worse" than how well a particular grind matches and optimizes a particular, overall combination. The Summit cam leans towards a stock motor or one with no better than GT40 type add-ons.

I'm waiting to see the f303 vs F303 plus. I have 2 mustangs and already have a ford racing f303 in one and have been on the fence about what to buy for the second one.

If you have a choice with a stock engine. Change the heads first. That gives great gains. Better than changing a cam with stock heads.

Would be interesting in a clevor setup

Nice video Richard! If you was to do a 1.7 roller rockers upgrade over the 1.6 rockers on these combos how much hp would you gain?

Can you run the test again but with a stroker, preferably 9.5 base

I am curious, other than nostalgia, why the B303 is "still a thing." I am an old-timer (I got my 1990 LX new when I turned 18), and the whole design goal for the B-cam was to compensate for stock heads with tiny valves (which is why they hang the valves open so long, but without a ton of lift) because aftermarket heads didn't really exist. It would seem to me that in 2022, almost regardless of your combination it would benefit with one of the zillions of profiles developed since. That said, I'd be curious to see what they pull...

Hell. A stock HO cam and blueprint headed long block looks like a really fun daily driver motor. No lopey lope, but really great all around power.

The two improvements i got with the 303 plus was a bit stronger from 4-6k (maybe) but where it shined for me was idle and low speed drivability. Ive got a 306 with x2 heads and pro flo 4 efi and the new plus cam plays much nicer with that particular efi system.

This engine and a t56 in a fox would be a fun/usable street car

Good morning Richard Don't really have any use for what motors you are covering. But do like the information you give. Maybe you can steer me to one that shows me a small block 318 Mopar with a stock cam against a rv cam and the wiplash 340-360 cam. Thank You very much for sharing your knowledge with everything. You and David V are very Free with your knowledge and I for one Thank You. Always be safe in your travels and Take Care

Amazing how well the stock cam did with good heads, etc. The summit cam didn't improved much on the old Ford technology, especially considering how much more lift and split duration. Looking forward to the B303 comparison.

Would like to see the anderson cams up against these as well. N-21, N-41 would be a nice comparison

Can you run comp cam n271s nostalgia vs the letter cams

I'd also like to see the Z cam.....

Richard are all these cams compatible with stock fl;at type 4 eyebrow pistons.

This analysis is very interesting. Would you know what the 0.050" duration is on the stock HO camshaft is? My guess would be around the 210 degree range? That is some good power for a mild cam. I'm not to familiar with factory or aftermarket windsor heads, but do they have a restrictive exhaust side compared to the intake? Eg Like 2V cleveland heads do? Quite common down under here to run a dual pattern cam with 8-12 ish degree more duration on the exhaust side on 2V clevelands

Wonder what the f cam would have done on that set up

Sum probably should have left the e303+ LSA at 110.

Wow stock cam 302 that thing could break some hearts

please teste the b+ and the f+ compared to the originals

Can I use this cam on a stock bottom end with gt40 heads with TFS springs?

Well now,This tells me the summit cam is not the choice for a street daily driver/hot rod. You lose bottom end and only gain a small hand full if you run the guts out of your stock 5.0. This would have been better if you did it on a bone stock 5.0. 90% of the guys that buy an E cam put it in a bone stock 5.0 mustang just to make it sound good at idle. The summit cam specks also seem like they would have less valve to piston clearance.

Have you ever tested a Crane 2031 cam with 1.7RR?

Richard when you swap in the f303 could you test it with both 1.6 and 1.7 rockers for a hp comparison 🤔

were the Plus cam showed a power gain is above were the Fuel injection engines quit making power. Plus cam would be a gain on a carb engine but the B303 is as good in the injected engine power range. my injected engine will pull to 6200 but the power drops off after 5500.

Excellent,, now I need a new cam lol