Buick Indy Lights block

[DaveA]

Hello, I have a Lola Indy lights car and was wondering if the block in these cars is the same as the GNX one, or what is it? I also possibly have a surplus block.

[Turbo2nr]

ooooooh, aaaaah, how much? The gnx has the same block as GN, T-Type. There was a buick stage motor and a stage II motor, for racing.

[Keller]

The block you have is likely a "Stage II" block, sold through GM Performance Parts and never used on a production vehicle. The GNX had a standard Buick V6 turbo block - nothing special and certainly not a Stage II block. The Stage II blocks have much more meat, 4 bolt mains, and 6 bolts per around each cylinder in the head vs. 4. Stronger everywhere. See http://www.gnttype.org/techarea/photoguideindex.html to check out the blocks and heads, plus some intakes.

[DaveA]

We just looked at it again, the casting numbers have been ground off mostly so it's hard to read, but it is a 4.1, 4.125" bore, off center, 6 head bolt block. It does have the Buick power 6 on it. Thanks for the help. I've always been impressed with these engines, I work on race cars for a living and we ran Scott Brayton in a Buick Indy car in '89 at the speedway. Our best engine would make 910hp at 9200rpm with 55" of boost (about 12psi); and they would do this for 500 miles no problem. If you missed a gear shift or hit a bump leaving the pits and the revs went over this you broke valve gear for sure, but the bottom end was never a problem.

[Turbo2nr]

Only 910 HP?

[BobbyBuick]

Does it have a place to bolt a starter?