[SD455DJ]

Originally Posted by will slow gto

Wow, 13.2 @ 103 is really moving for a car with logs, 3.42s and a 2800 cam. You guys sure know how to squeeze every last drop of performance out of these stockers. Bravo!

Thanks W.S.GTO! If we built the 400 to the max the pure stock rules allow, I could run as much as 11.5 to 1 compression (1.5 over advertised 10.0), and any hft cam (actually have a 2801 in it now) that maintains 16 in. vacuum at 1200 rpm (changing to 18 in. this year). Higher compression would allow a bigger cam to maintain 18 in. vacuum, so possibly the 2802 could work, but I think the small valves and log manifolds would be corks (with the 2802 cam) above 4000 rpm and counter productive...not to mention the tradeoff of less torque for higher horsepower wouldn't allow better et's in this particular engine (would work well in a RAIII with bigger valves and RA exh. manifolds!). A 3.73 or 3.90 gear would be more ideal too. With some front suspension work along with all the above, it could run 12.70's at 108 mph. If it weighed closer to 3650 lbs, there's a another .15 seconds lower et!

Dennis