[Tom Vaught]

Thought of another story on this "Bore Spacing" deal.

A few days ago, as many of you know, I went down to help John Clegg with his "Rat Rod" 64 LeMans that was running in the Texas Mile. Basic Pontiac 455 type 2 bolt main block engine with a Vortech Supercharger and a little hydraulic roller camshaft runs 180 mph in the Mile.

While we were there he shows me his RACE CAR and its Engine. (3rd Gen Firebird)

Now John Clegg has been a Pontiac Racer for longer than 95% of the people on this board have been alive. I personally saw his 64 GTO, His 455 SD car (former HO Racing National Record Holder), and other cars.

So back to the RACE CAR. His RACE car has a 450 cid engine. It runs 7.90s NATURALLY ASPIRATED, (This is not a 535 CID Supercharged engine/car trying to get into the 7s, it IS in the 7s.) He is not Trying, his car/engine is there.

1) We have an engine that is 85 cubic inches LESS displacement

2) We have an engine with 1.00" less stroke

3) We have an engine running GAS with Dual Dominators.

So what are the other differences:

A good set of heads, not the best heads but decent heads.

A Big Bore Spacing Block and a 4.696" bore piston

A Short Stroke (3.25") crankshaft.

Everything that Travis just mentioned above minus BOOST and the boost is coming down the road.

So here you have a properly designed engine using later GM Knowledge (all of the basic parts are GM Part Number parts) to have a FAST car that is quicker in the quarter mile vs the 535 Supercharged car using technology from the 60s.

Think about it.

Tom Vaught