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We're finally getting started on our 68 build to replace my 66 for autocross. We're using a Coffman Corvettes chassis with roll bars that we added.
It'll be powered by a 434 LS7 based engine.
Should be fun!!
That looks like it would be some serious fun! Why don't you want to stick with a replica of the L88 and go for it? If you have cold air getting into your combustion chambers the detonation is not such a big problem. A water/methanol (windshield wiper solution) injection system can keep your engine running nice and cool without the need for racing gas. The L88's in the 1968 Corvettes look great and run like few engines I have ever experienced in my life. There was a video of a Guy racing a 1967 with an L88 and I will never forget the sounds at speed that engine of his made.
If you do want an L88 use the 1968 style cylinder heads and not the later open chamber heads used in 1969 and later. This too helps deter detonation.
that will be very nice the 1 thing I noticed about c3 corvettes or at least my 69 is that they are not as comfortable as a c2 and harder to see over the hood , keep the build pics coming.
That looks like it would be some serious fun! Why don't you want to stick with a replica of the L88 and go for it? If you have cold air getting into your combustion chambers the detonation is not such a big problem. A water/methanol (windshield wiper solution) injection system can keep your engine running nice and cool without the need for racing gas. The L88's in the 1968 Corvettes look great and run like few engines I have ever experienced in my life. There was a video of a Guy racing a 1967 with an L88 and I will never forget the sounds at speed that engine of his made.
If you do want an L88 use the 1968 style cylinder heads and not the later open chamber heads used in 1969 and later. This too helps deter detonation.
Well, I've done the BBC thing, in fact I have a 509 and a 433 sitting here in the garage. I agree they were amazing for their time, but the newer LS and LT platforms offer as much or more power and less weight for less $$, IMHO.
The stroked ls3 in my '66 dyno numbers were 640/548 flywheel with a weight savings of around 200 lbs less than the bbc I took out of the car.
BTW, I grew up in Fairfax Co. and near Fredericksburg. My best friend and partner in this build still lives near F'burg.
Last edited by lakebumm; Apr 30, 2022 at 04:39 PM.
Well, I've done the BBC thing, in fact I have a 509 and a 433 sitting here in the garage. I agree they were amazing for their time, but the newer LS and LT platforms offer as much or more power and less weight for less $$, IMHO.
The stroked ls3 in my '66 dyno numbers were 640/548 flywheel with a weight savings of around 200 lbs less than the bbc I took out of the car.
BTW, I grew up in Fairfax Co. and near Fredericksburg. My best friend and partner in this build still lives near F'burg.
I'm from Fairfax county too. Raced at MIR 75-80 York bristol. Had a 68 L-88 in the mid 70s should have kept it but had a bigger project in the works.
I'm from Fairfax county too. Raced at MIR 75-80 York bristol. Had a 68 L-88 in the mid 70s should have kept it but had a bigger project in the works.
I spent many evenings at Budds Creek as it was called then. Ran at 75-80 a few times and at Colonial Beach a lot. Also, a ton of street racing.
Then we built a roundy round car for Manasas and later moved to Richmond and ran at Southside and South Boston.
Those were the days of unlimited energy!! LOL
68 autocross Corvette build
