[BigDave]

If I had the choice between the two I'd take the LS1. I'm biased what can I say. I do agree with the post above about whether it is the best SBC ever made. It's still too early to tell. There are a lot of bent pushrod, broken valve spring, and oil blow by stories out there regarding these motors. However, before the LS6 they were the most fuel efficient, cleanest burning, most powerful stock SBC ever made. There are some things you should consider though.

The LT1 aftermarket for parts is huge. The LS1 has been out only 3 or 4 years so it has some catching up to do but it's getting better.

The opti-spark system on the LT1 is a joke.

The LT1 is an iron block while the LS1 is all aluminum. The lighter weight motor could require some front suspension modification.

I wish this guy was a member. I ran across someone from Oregon, I think, who had a LT1 Vette motor installed in a beautiful 72 3-door Suburban. The install was awesome with everything tucked and tied in the right place. The truck was midnight blue in case anyone has seen it.

I have several friends who own 4rd generation f-bodies with stroked LT1's running mid 11's, all motor, no juice. They are great powerplants and very reliable. On the flip side I also have friends with heavily modded LS1's who are running 11's but most of them need help from Mr. NOS.

Good luck with which ever you choose. Keep us informed.

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1972 Chevy Blazer 2WD - 400 SBC, bored, ported/polished heads, 9.5:1 dished pistons, Lunati 480/292 cam, electronic ignition, Edlebrock Performer intake, tricked out Rochester 850CFM Quadrajet, long tube headers, Flowmaster 40's, TH350-C with lock-up switch, 2800 rpm stall, shift kit, custom driveshaft, stock GM 12- bolt rear with Auburn Pro Series limited slip 3.73's, 2" drop spindles, 2" drop rear coils, track bar kit, front/rear stabilizers.

1999 30th Anniversary Trans-Am Coupe #1494 - M6, Flow-tech cut-out, Flowmaster, free mods. One of 292 coupes with M6 and in-dash CD.