Yes, headers are included. Going by the GMHTP rules which includes roller rockers and valve springs as well. The heads, cam, intake manifold, and entire bottom end must be stock from the OEM. Rebuilds aren't allowed, must be OEM short block. Must have at least 18" vacuum at 800 rpm.Kevin Johnson wrote: ↑Wed Jul 29, 2020 7:52 pm
Do you consider headers a bolt-on modification?
viewtopic.php?t=59218#p836083
Current record stands at 11.48 @ 118 mph. I have done currently....
1-3/4" headers to mini-bullets dumped
Ram air from the foglight hole
52mm TB
1.6 roller rockers
O2 sensors deleted (tuned open loop only)
Electric WP
AC/HVAC deleted
PS deleted
Underdrive pulley
160°F stat
TH350 with a high STR 9" 4000 stall
4.10 gear in the fragile 10 bolt
M/T 28x9 PBRs and skinnies
Sunoco EXO2 fuel
...plus a bunch of suspension work and weight reduction. I'm trying to get it under 3000 lbs race weight. It's at ~3150 lbs currently. I even got what is essentially a copy of the oil used by Elite Motorsports PS guys in a slightly more viscous 5w-20 grade (lots of friction modifier). The lubrication at every point has been catered to maximize friction reduction.
That's why I'm looking at crankcase evac. I'm going to need every bit of power I can get from it.
No leaks or excessive blow-by. Compression and leakdown numbers are excellent given the mileage. It has a clean bill of health.