THE REMATCH! TRUCK NORRIS VS CHOPACABRA VS PRO LS VS LIL HOT ROD. WHAT IS THE BEST LS TRUCK CAM? 

So in the end , order whichever one's not back orderd or cheaper?

Thank you for going back and revisiting these! 🤟

Woohoo! Thanks for the testing Richard

Wow. That is incredible. Awesome test. Thank you

The timing of this video couldn't be better! I am making a shopping list for my soon-to-be LS swapped 69 c10

Had a feeling these results would end up that way with equivalent oil pressure, awesome video! definitely some of the best all-around cams for the smaller LS engines

Great information. thanks-you have a great job -I could do this everyday ✌️

Hi Rich, love the sheer amount of testing you do, but can i ask a small favour, particularly with things like cam tests. I noticed the dyno console shows manifold pressure, any chance when your doing comparos you could let the engine sit at a nominal rpm, say 1000, and show what vacuum its pulling. If you have two cams that make similar mid and peak but one has oddly more vacuum, then for a stret car, take the one with better vacuum. Cheers.

I'm glad you helicoiled those threads and they certainly do wonders

Hats off to you my guy that’s a lot of work, and I don’t have a lot of people understand it

Thank you Richard for the plug explanation! I love your dedication!! The saying was if you drop a plug? Throw it in your neighbors yard and get new a new one!! I wish we had this info back in the 80s!! We were guessing with all the new electronics and fuel injection just coming out. Could not tune the factory ECM so we were carbing the vortex heads and made good power but not like the LS platform!!!

Thanks for redoing the test though

Thanks as always

Not sure who is funding your research but the numbers as you openly portray them, don't lie. Honesty is hard to come by on the interwebs...yours is def appreciated.

Pretty much what I figured would happen, but now there is ZERO doubt.

LS plus cam upgrade is always welcomed!

i have an Excalibur cam in my LS4 from LS4KING. it specs out close to a truck norris and i love it.

6 degrees of variation on the intake duration and virtually identical. Summit specs on duration at 0.050 seem a little suspect given the high lift and softness down low, but again little difference. Very cool comparison.

Thank you

Richard..! The same Test for 6.0 Please..! Thanks. You are a Master.

Never for nothing Richard! Thanks!

Doing the lords work

Thanks Richard for all the hard work . I thought different lobe seps would shift the power band around ?

Right on

Wow! Thanks sooo much for doing all of this work. Yup...this was THE cam comparison test that, at least ,I was waiting for. So interesting.... Building a 408. I have the bottom end already and you have helped me decide on the cam. Which is any one of them. Maybe 1 of them w go on sale. Haha. Now I have to decide on heads. I have 2 sets of 317 heads so since I have them I may have it milled and I may put in some bigger valves and bowl blend it. What do you guys think? Oh...it's going back into 2500hd silverado

I have tuned several of these in multiple trucks in various builds. The Chopacabra seems to have more noticeable low end tq prior to the 2500rpm mark. Truck Norris “takes off” right at 3600rpm in a 5.3 and 3400 in a 6.0L. That is where it seems to come alive in the trucks where you are limited to timing on the low rpm due to weight/load. You will 100% want a stall and a solid rear gear 4.10-4.56 depending on tire height and weight to optimize these cams. I tow with my truck99’ ex cab 5.7L and it needs a 4.56 and a 3k stall to mitigate the low end tq loss in dynamics below 2k rpm and opted to use a custom grind 213/220 .575 113lsa+4 cam. Hasn’t hardly any lope but has more low end tq 2-2600rpm than the truck Norris hands down. Very noticeable difference especially when towing

You changed cams so we don't have to. Thanks Richard

Today is Dan Gurney's 92nd birthday. He's a legend.

Would be cool to get idle comparisons to see if they sound any different

i would be interested in the B.F.D cam vs the L83 Truck Norris cams

Ha ha I just noticed something. The big truck torkinator is Summit’s old stage 1 turbo cam renamed. Look at the images at Summit for the cam. Same specs, same part number (8728R1). Different name. Marketers. Every cam is a turbo cam.

Anyone interested in learning about the LS family of engines should definitely subscribe to your channel. I'm in the process of building a gen 3 5.3 and run upon your channel and have been watching your videos since and has guided me in the right direction for me and what I want from my engine. Haven't run across another channel that does as much testing as you and I do appreciate it. Much thanks

You should test each companies max effort Na cams. Aka stage 4s?

We need a test with car cams gpi, tsp, cam motion, btr, and trick flow

I'd like to see how the sdpc PowerMax cam stacks up against these cams

Richard - How would you rank these cams by original design? I only ask because I prefer to support the manufacturer that took the financial hit on R&D cam specs.

Proves that similar cams produce similar results in terms of power and torque. For many of us, it comes down to price, quality (or perceived quality), availability, and customer service - not necessarily in that order. I tend to buy again and again for companies I trust that demonstrate great customer service. In fact, I might pay slightly more for their products as opposed to cheap stuff of questionable quality with little to zero product support.

Luv the shout-out. Can you tell the difference in idle? You mentioned hard to tell a diff. if driving ... Ty

I'm building a 1990 c1500 with 5.3, truck norris cam and a 78/75 turbo, its going to be so much fun on the streets.

Still waiting on someone at Howard's cams to send over the rattler or the soon to be new competition to this group of cams coming soon that a little birdy told me about lol

Lsa plays a role in useable powerband. No cam is perfect at all rpms to build the highest hp and tork at that rpm. Only an adjustable cam could ever give us the max power of tork and hp at every rpm. But since a cam cannot be adjusted in the way the engine needs we have to pick one that gets us an acceptable power curve. What tork losses down low are acceptable for power gains up top. It depends on your application and intended goals. Are you aiming to build a low end towing motor with a little mid range or a mid to upper rpm power combo. When unsure go with an intermediate cam. The best cam is not always found at the bottom of the list in a cam catalog. A custom cam isn't usually needed as most cam companies have a good diversity of cam choices. And it costs more time and money to get a custom cam made. Most people couldn't even fill out a custom cam order form. Bloodviking

Which one got the most low end tourqe

Dose comp cams have a equivalent to the truck-norris cam shaft

Btr never runs sales could we get a test to see which cam is the nicest to valve train price is a big deal

Is there a vacuume difference in the cams?

Hi Richard, I guess It would cost too much to heli-coil all those holes from the factory, like they should have done with the Muncie!!

The Best cam is the best cam 😏

Plz do 6.0 with texas speed madd maxx !

For us with tight spaces, it would be interesting to see some tests with stock manifolds vs holley LS cast manifolds vs short tubes vs long tubes on one of these cams.

Yeeeessssss I've been waiting for this one to drop, regardless I'm going with the Chopacarba.

wouldn`t an ideal truck cam top out in tq further down in the revs. if possible

and yes… they’re all Turbo cams. Every cam is a turbo cam.

RH where you surprised at all by how close they were? I understand this was a redo but the results were pretty close last time also.

Can't wait for my IROC to chop meaner although the Big Block Chevy Lope is so addictive.

Looks like the Summit cam is the best bang for the buck!

Have you tested a Howard's Rattler Cam? Curious how it'll compare to the truck norris and chopacabra in a 5.3.

Do they sound the same at idle ?

My question is what we’re the fuel consumption rates compared to stock? I guess at about $4.75 a gallon for premium that has to be a concern from my standpoint in a daily driver.

What is the price difference between them all?

So in the end bigger lift on the summit cam really didn't make a difference so it comes down to duration at . 050

Richard Hi I have one question with cams that have a 110-114 LSA do they give u more vacuum at idle compared to a cam that gives you a 107-109 LSA? If anyone on here has a answer plz can u lmk thank you!

Could you throw in the mad maxx with this group

Let’s see them results on MADD MAXX from Texas speed

What about the Honey Badger?

Got 5.3 lm7 with 200k miles. Wanting to cam it for performance. I do I need to refresh rod bearings? New cam rollers? Or do I leave the motor alone just with springs and maybe new rocker arms?

Lol he said "fingers going everywhere"

🎉🎉🎉

Am I the only one nervous over the TN cam standing there on its end while he worked?

@richardholdener question for the daily driver 06 Sierra regular cab shortbed 5.3 long tube headers with a trailblazer factory stall converter its supposedly 22-2400 stall would one of these cams work well for a daily work truck if not what would

hello sir first your videos are awesome to watch but i have a question what is the biggest cam i can install without valve spring change or head work on a L99 with good sound and power Thank you.

Whats the BEST 5.3 LS cam for a gbody swap with no other parts needed, JUST THE CAM? my 5.3 was complete and rnning & came out of a 2001 or 2002 avalanche not sure if thats 1 , 2 or 3 bolt timing gears?

I'm going to use this info to find the lowest priced cam.

What would bring your RU-vid channel to the next level is if you put some of these engine combinations in a vehicle and did a hub or wheel dyno comparison with different drive trains. Manual transmission with different flywheel weights, automatic transmissions with different stall speeds. Plus you could take them to the track and show some time slips and have a little fun!! Stop wrenching so much and enjoy the fruits of your labor. Get you a 4th gen camaro and put your big bang 6.0 In there with a turbo 400 and a decent rear diff.and go have some fun.

What would you need to do to swap a LY5 out and put a LM7 in? Im wanting to buy a crate motor and i dont want to drop another LY5 in and have to delete the dod. Just wondering if any 5.3 would be simple. I have a 2008 silverado.

'I feel like I did all this testing for nothing,' lololol.

Richard, I've watched most of your videos. I don't recall you testing the Sloppy Stage 3. Have you tested it yet? Also, did you check ptv on these cams?

Awesome information!! I just got a gut punch feeling watching you buzz the sparkplugs out with the impact wrench!! OUCH!!! The spark plugs are made of Porcelain!! you wouldn't use an impact on your toilet. I hope Not!!

what headers did he test with?

How would you feel about testing a dual exhaust vs. x-pipe vs. y-pipe vs. the "switch-fire" type of crossover (like 4 y-pipe where two crossover)?

Chopacabra cause best sound

Can you test the chop monster from Texas speed? Wanting that cam for my 5.3.

Dude why not 5/16 dowels? No way I’d trust those trays 🤣

Richard!! Come up with your own series of cams and I’ll buy all of them. I’m sure others will also haha. It’ll help support you. I just wanna put them away in the corner to talk about in 30 years.

👍💪

I would never be shifting at those RPMs... Normally with my 5-speed manual , I'm shifting at 2000 RPMs. , 3000 RPMs if I'm getting on the highway... I think these cams would ruin my low end torque... And my 20 mi to the gallon.... Full-size club cab truck.

After swapping cams like that, would the pushrod lenth matter? Reason I asked is cause I never saw u measure the lenth after swapping the cams. Wouldn't a bigger lift cam change pushrod lenth?

Would you recommend a stall for a truck Norris 6.0 engine on a crewcab Silverado on a 6 inch lift on 24x14 wides?

Do the stock pushrods need upgrading with these cams?.. I saw a few Truck Norris cam "kits" with stock length 7.4 pushrods?

Is that because you've changed the cams 50 times or what was the cause? I assume you have to retap them, maybe go slightly bigger in size if it's possible.. Not a great working area to do that stuff on.

Hey Richard, how well would a chopacabra cam work with a turbo?

Im in California but I have an LQ9 motor that I put into a 1994 2 door Yukon and I’m doing research to build a 6.0 to a 6.2 iron block bore and stroke 618 that can handle an LSA supercharger do you have any recommendations on parts to get for this build to still be able to take 91 pump gas

What does the +3 mean on cams? I have a btr ls3 stage 3 and it’s a 113+3 lsa.

Chopacobra claims you can run the stock converter..what are your thoughts?

Let's see truck cam vs stage 1 and 2 cams on 6.0 liter

In other words, buy what’s on sale!

Do these cams make enough vac at idle for brake booster? Given the lift/dur and LSA which if any would be better in a daily? I know we are splitting hairs here. haha

Algorithm

The one with the smallest specs would be my choice. Required springs will cost much less and easier on the valvetrain.

Here's a question for you. I understand large diameter pipes are good for high rpm hp and smaller diameter can be better for that low end torque. Have you tested this? When I look at my pipes I see it's no wonder people lose all their back pressure and poor if they remove their cats. To me it's disgusting and probably a cruel trip from GM. I'm thinking my 02 Sierra with the 6.0 should have no bigger than 2.5 MAYBE 2.75 exhaust after Y'd together. I have a truck motor, not a race car. My truck should rarely see 3k and never see 4k. What are your thoughts? Setup(planned) 6.0, 706 heads, stock truck intake one of the cams from this video, electric fans to open up area for cold air intake, shorty headers.

Over 400hp with 1.5 screws 😅 showing off Rich...