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We ran dart 360's and Big Chiefs. The chiefs make about 200hp more but they have been a pain in the butt. Spend all you can afford on a nice 14-71...
We dump 10 degrees min on the hit. Going to try even more to soften our wedge engine. TOL is correct,phasing is critical, esp on a mag-12 we...
oil Redline racing 60wt Mike
8973 I don't know about timing issues but the 8973 has problems with misfires due to the rev limiter wiring. The wires that go to the points box...
I never broke the chambers but my exhaust ports cracked on 18% dart big chief water heads. I never pushed the EGT's. Made around 2k hp @30psi.
We run a 540 with big chiefs and a 14-71 helix. 32 degrees max timing. We run 30 with 37lbs of boost. Promag 12 ignition. Your stuff can make well...
wires I think most everybody runs MSD wires. Keep a log of the resistance values especially the coil wire.
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Thanks for the replies guys. I think the problem is in the 7531 box. Leahy hooked me up with some ideas to try. Sounds like nobody will admit to...
bummer Sounds like a rough dyno session. Nobody runs stainless on big hp blown alky. They can't take the heat. The intake valve will...
Has anybody made big power with a 12 amp MSD. We are putting out cylinders. Sometimes egt will drop in the middle of the run and recover at higher...
gaskets We run old torn up copper gaskets just to keep the headers from digging into the head. I don't think they are neccessary.
cams I wouldn't be so quick to badmouth an Oddy cam for a BBC. I've run both of his cams in conventional and Big Chief chevys and they make...
The plug wires have 18 passes since new but we have had trouble in the past due to Chevy pain in the ass plug access and caveman crew members. It...
990 Enderle pump. If it was leaning out I would expect to see hot plugs,high egt's and rattled main caps. I have data from a clean 7.19@195 pass...
I've got pump pressure. 160psi@8800. Mike
We run a blown alky KB/Olds with a promag 12 and a 7531 ignition box. Makes around 2000hp. The car has been doing some popping and banging at the...
A KB/Olds aka New Century with big chiefs went 5.96@243 in a screwblown promod last weekend. I think it's the first wedge in the fives for...
We have run 14% and 18% big chiefs on our 540 with a 14-71 helix. We broke the 18% water heads so I wouldn't even consider a pontiac unless it was...
The KB/Olds uses a different pan ,timing cover and slightly different starter than a normal BBC. They are available in a lot of different head...
