Hey guys, my previous thread seemed to die with covid shutting the world down. I have some new parts but with the same question which is: Please help recommend a combo for a street/road trip friendly 4200 lb car. I'd like to do a high compression N/A build with a cam and tight converter to make it all work. This will be a daily in a sleeper wrapper. It'll be my only hotrod for the foreseeable future so it's not the conventional build on here. I originally thought I'd bore and stroke to limits but found out the skirt length doesn't play nice with the block I have. I heard there's some long rod piston combo that works?

L77 Aluminum 6.0 block
260cc AFR heads 69cc chamber
91 octane and e85

 

Smaller cam @ 4200 lbs with ls3 heads
slightly larger cam with a Cathedral port...+ More TQ which You need @ 4200 lbs ...big fella

 

Stroker and that particular block, and it's sleeves would be different than what other LS block besides the Longer Ls7's?

5.3/6.0/6.2 factory sleeves are all within a hair in length...

 

Stock bore stroke 6.0 I would get 205cc heads cathedral port for a street car. 220cc for a street/strip car
for a stroker motor 220-245cc cathedral heads depending on size.

 

4400ish pounds here and I went with 402ci 11.8:1 and Mamo 235 cathedral heads. He wanted no part of rec port heads on my build especially with a 4" bore.

 

Fake news.

 

This.

Make it a 402, small torque cam like a cam motion torquey stroker. Best heads you can afford. Prc 225/227 would be a good choice. 11:1 compression. Fast 102, Give the car some gear and call it a day.

 

I bought a set of afr mongoose heads

Why would a builder prefer cathedral heads over rectangle heads on a stroker?

 

Because of the bore size. 4.00 bore is a MF'r. The LS3 architecture doesn't work that well overall vs a cathedral. There are finally some dedicated small bore LS7's coming out(Mast) that should change the rules some. Trust me, I am in the same boat as you, LS2 4.005 bore/stock stroke. Have beaten my brains out looking at different head combos. Ended up, I am getting some TEA TFS 220's for now and going LS7 architecture later whether I stay small or go big bore. It's all $$$

 

It's about being Content with a small bore and using What ever head fits the overall build the best ....

​​​​​​Who wouldn't take Stevens 402 with Cathedral heads?
Ls7 heads?
Dart heads were used....Why wouldn't a good set of Factory Ls3 heads do just as Good....

That Ls3 head test that Showed Mast Motorsports making X amount More Wouldn't show that great vs a 402 that wasn't 450 cubes with more compression..

If ones not happy with 600 to 700ish + on HP depending on Cam & intake...

It's about Reality and being Content with what's possible...if mores needed Build bigger and if so not spending

Twice on the block or the Work done. Out think the money pit....