KwikistZ

I was wondering if I built a 'baby' LT1 up to a 305 with forged pistons. Lt4 heads and valvetrain, LT4 carb intake, hooker shorties, true duals w/x-pipe, mufflers, holley 670 street avenger, k&n open element. I think thats about it. I was thinking if I'm lucky, 300hp. What do you guys think? I might be building this motor for a class in the SCCA, it has to be a carbed 305. Thanks!

94formulabz

I think you should start with a regular LT1 block and bore and destroke it since the baby lt1 is a different block altogether.

A 305 would could be a great high RPM motor, but the other problem you might run into is the 7k rpm limit of the stock PCM.
EDIT* nevermind the pcm comment, your carbing it, DOH!

Chris 96 WS6

I believe if you can find an L99 motor (the baby 265ci LT1 from Caprices, etc.) you can make a 305 LT1.

The L99 has the 3.74" bore of a 305 small block. Slap an LT1 crank and rods in there and have it all balanced and you'd have your 305 LT1, but with that small of a bore you're looking at poor performance due to valve shrouding, etc. Not to mention the fact that for a road racing motor you'd rather have more bore and less stroke.

The L99 was 265ci. I believe the L99 crank in an LT1 block would make a 327, which doesn't get you to 5.0 liters. I'd be concerned about long term reliability of an OEM crank but I don't think anybody makes any destroked LT1 cranks. You might be able to get there with the right rod length and piston height.

SStrokerAce

The L99 has a 3.00" stroke if it has 265cubes and a 3.74" bore, that means it has the perfect combo to make a 302 engine. LT1 block with a 4.000" bore and a L99 3.000" stroke will give you the easiest and best way to make a 302.

BTW what SCCA class?

Bret

KwikistZ

American Sedan. I just heard that I probably won't be able to run that block...damnit! I was so excited O well. Thanks for your help anyways! If you guys know any info on rules to the SCCA's American Sedan category, I'd like to know I know I can buy a book, but I don't have that kinda money right now. This motor/car won't be started for another couple months, I'm just planning. Thanks again!

Xscream

You are correct, you can't use a Gen II SBC in AS unless something has changed. You will want to buy a rulebook, AS has a lot of little quarks in the rules - that or find a car and copy it LOL.

Best of luck!

SStrokerAce

I've looked at that class before. There are alot of things you can and can't do in it. You have to run a 305 block with the small bore.

I have some ideas for you if you are interested shoot me a e-mail.

Bret

adprousa

I'm interested in your ideas... presently putting one together. Marty at martinsullivandesign@gmail.com

Injuneer

The original poster "KwikistZ" has not been on the site since March 2004. "SStrokerAce" was banned several years ago. I don't think you will have much luck getting feedback from them.