Modify SB Ford OE iron heads for a 94 HP gain 

I guess I missed this the when it was posted a couple years ago. 😳

@@hotrodray6802 I appear to have missed it, too (on the David Vizard Performance channel). There was only one follow-up video that I've found. I wonder whatever happened to the test of all the other heads?

came here to say that. Swapped a cam in a roller Ford with E7 heads, lifters out and back in with no issue.

I've never had to worry about clearance when installing and removing roller lifters or flat tappet. I think lots of people get their Chevrolet knowledge confused with Ford.

Only if using '84 or earlier heads.

I did the heads, 100 hours of porting. They are no where near stock. Thanks

Why. They were junk way back then. Haven't changed

There was an old channel?

@@kiweeltyler3586 David Vizard Performance. DV's youtube partner died and youtube wanted death certs and such for him to move the channel into his name. It was easier to start a new one.

I've never actually seen a Cleveland in person... I've seen 351 Windsor of course and the 400m and I've seen multiple versions of the FE engines 360 390 and I've seen 460s I've seen different versions of 427s and 428 I think it was I've seen 352 289... of course all of the newer modular engines... Flat heads...ollllllddddddd model A ? Maybe 4 cylinder that we struggled with the water pump packing... one thing I found out on that one was that whatever provides spark hurts more lol...but never have I seen a Cleveland....

⁠@@bentboybbz There is no such thing as a 400M. The 335 family is the 302C (Australian), 351C, 351M, or 400. It’s nitpicking, but that’s what they are. I am building a 1970 351C that has a 4.020 bore and 4 inch stroke (all forged internals). With good AFD or CHI heads (haven’t decided yet), it should make great power.

Power is torque with a speed factor. An electric motor or steam engine has maximum torque at practically zero rpm. If the applied load it's not being unbraked ( that is, un-loaded) , it's not producing any measurable, or assessable power. This is why a Dynomamoter is called a Brake..Ie, Brake Horsepower. Force equals Mass times Acceleration and acceleration is feet per second, every second, ft/sec²

@@deanstevenson6527 yup...with out tq you're not accelerating. Hell you can't even maintain speed with out tq. Hence hp is just a calculation. On top of that tq can be multiplied.....because it's real. Best way to explain more hp is more tq @ rpm.

It's almost as if these videos are just all teasers. I think he exaggerates a bunch in them.

@@keithwiebe1787 I think they might be old videos and someone is just reuploading them.

anything that doesn't kill vacuum. if you use the classic long runner intake, then aim for a cam that makes power before 4,500 rpm when it typically runs out of air.

Modifying iron heads is for stealth or classes that require factory iron. 100 hrs porting and then valve labor ain't cheap. Hence the $4,000 price tag.

@@hotrodray6802 I get it if you have to for racing but I struggle with the stealth thinking, you spend $4,000 on iron heads and run like an aftermarket continuous no one believes you have stock heads. Not to mention that you modified your stock head you know the same as changing for aftermarket so whats the appeal?

Ford Australia were building 5.6 liter engines like this from 2001 Ford Explorer GT40P engines...locally made 50 Oz unbalance 3.4" stroke, 5.35" rods, 1.169 compression height Mahle pistons. The team reverted from Alloy Y302 heads to CNC ported iron GT40P heads...used because Ford got a better result, 227 CFM intake at 500 thou, from just port work verses 212 CFM stock. DVs E7 TE heads are way beyond these Tickford FTE GT40P figures, even those 5.6 liter engines made a factory 335 HP Net, 385 HP SAE gross EFi engine with 369 lb-ft torque net.

@@deanstevenson6527 on a stock 302 block and stock internals, would gt40 heads and b303 cam work together?

@@quintonnava1441 Yes and No aren't words that work with 1968 to 2002 302 non canted Valve engines. Especially with big exhaust valve GT40 heads which don't have small exhaust valves like factory US market stock GT40P heads have. Piston to valve clearance is compromised on certain Standard Output and High Output engines. 86 HOs, any A, D or K code with higher compression, the exhaust valve gets really close, so it's always "Test and Verify Piston to Valve Clearances before final assembly". The E7 TEs modified are a better first choice, but I've got pictures on Four Eyed Pride of PTV collisions just from valve float.

@@deanstevenson6527 definitely have heard about interference engines. Its a 84 mustang with a 302 out of an 87 mustang. Just trying to find big power without tearing the engine apart.

@@quintonnava1441 You should be great on a 84 HO 4bbl block with the GT40 and E303. The head and cam choice is sub-optimal, and you'll be better served with link bar lifters and spending money on a cam profile that matches a better flowing cylinder head. The E7 TE end point is about 240 CFM from memory. The 94 HP gain is from a matching of all aspects on Head, Cam, Intake, rocker, con rod and piston flame travel and quench optimisation.y suggesting is to hold off untill you Bench race what you think you can afford, verses what David is suggesting as a whole combo. The E303 is a very latent cam compared to a cam that matches the total flow and cylinder filling requirements. You probably won't even have to move to a roller cam if you match your combination better. Have a nice day 🥝✔️.

Back when i was messing with my 90 Mustang I thought this way until I bolted a set of aluminum heads on, gains blew away anything my ported, larger vlv’d and 5 angle vlv job E7 gave me. That was out of box imagine if i worked on them.

@@msk3905 E7 hardest head to make power from.

And 100 hrs labor. THAT AINT CHEAP.

@@hotrodray6802 most guys port there own heads. But getting old iron heads to flow and make power is just cool and rewarding.

Stay tuned for the conclusion.

Modify sbf heads. Hey we used chevy rods and pistons. Butbwe won't tell you which ones.

What detroit are you working on and have you done anything with it? I have two 12.7s, a 53 store and a 71 series. And have been debating if there isn't anything that could be done during a build.

I think he blows alot of smoke up people's asses..

Tacky