1baaadz28

iTrader: (9)

I have hit a snag in my build, i have the option of building a 383 with an F1A or a 347 with the F1A, i will be using AFR225's 72cc chambers on both setups, planning on running around 18-22 lbs any and all help is appeciated

Bob@BruteSpeed

iTrader: (16)

I'd go with the 383 as you'll add torque to the engine. There are plenty of LS engines out there with 4.00 stroker cranks that don't show any accelerated bore wear. Bob

1baaadz28

iTrader: (9)

what about the wall thicknes in the cylenders? the bore is 3.905 will that start to present a problem with that much boost?

SnIpEz

iTrader: (4)

The max bore possible is 3.910, and plenty of guys rock a 3.905 bore so I think you should be fine. I gotta say, I wouldn't plan on running 22 lbs of boost with that blower though, I think you'll find 18 or lower will be PLENTY, especially if its a street car. Ask Bob to show you the graph oh the LS2 402 AFR 225 F-1A Procharged Cadillac CTS-V. It made 856 rwhp with (I THINK 14, pretty sure that was it, could be wrong) PSI. Now imagine 18. Now imagine 22.

Bob@BruteSpeed

iTrader: (16)

12.4 psi. Thanks. Bob

SnIpEz

iTrader: (4)

Saw it after I made that post. And I was off by 6 hp. Hope that gives you a good idea OP. Bob, if you're still reading this thread, any idle videos of that Cadillac? Or any videos at all? I'm dying to hear what it sounds like

Bob@BruteSpeed

iTrader: (16)

I'm not sure if I have any idle videos, but here is a 1/4 mile the owner of the V made. It was the first time he had made a run at a dragstrip since 1968, and he had a foot in a cast and was on crutches. http://www.youtube.com/watch?v=Ikiamvuecwc Bob

CABRO

iTrader: (1)

listen to bob....

1baaadz28

iTrader: (9)

Thanks to all have chimed in on this post, Its not gonna be a dedicated race car but mostly, Im wanting to do the texas mile next october, and am shooting for around 1000 Rwhp/900 Rwtq is it possible or should i look into a bigger CI motor(ie. 427)