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Old 10-31-2019, 05:10 PM
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camerjeff camerjeff is offline
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Join Date: Dec 2004
Location: Belleville , Mi
Posts: 1,982
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Sorry about the late response but I have been having trouble logging in for the last 2-3 weeks, but it seems to be cleared up now.

Yes I built a 301 OHC-6 Pontiac back in the late 1990's. It is in a mostly stock appearing 1969 Firebird. It ran a best of 13.22 at 103 mph at Detroit Dragway in 2001. Sorth Spec's on the car are a GMC 292 crank (modified with the counterweights ground amd rebalanced, Bored 1968 250 OHC-6 block (internally cleananced to accept the stroker crank), 68 1bbl head Ported and modified to accept Chevy LS Valve springs, Stock 4bbl intake, H-cam, Clifford Long Tube headers, Duel Exhaust with H-pipe, HEI ignition, Eagle H-beam rods for a Toyota Supra, custom ross pistons for a 9.2 CR. It Dynoed at 358 HP 4600 rpm and 406 ft lbs 1800rpm.
WC T5, 4.11 Chevy 12 Bolt. The car weighs 3368 lbs with 1/2 gas and no driver.

I would caution against anyone building one, it took me over 3 years to overcome all the issues, and I had access to a full machine shop at the time or it would not have been possible. If I actually had to pay someone for all the work that was done myself, or traded for with time or parts swaps I would imagine it would cost at least $10,000 in parts & Labor. As it was I spent over $3500 in parts alone. I think it would be easier to build a turbo or supercharged version.

My engine actually needs more Cam & a custom intake to really take full advantage of the conversion. As it is it launches very hard, but it is really all done at 4500 rpm, it will rev higher but very slowly and not really gain any HP.

I had alot of help from some very experianced people, including the driver of the Hole Shot 6 Fiat. He made the custom HEI for me.


I can go into alot more detail about all the issues encountered and how we overcame them if anyone is interested.

The Car was really built to beat my then coworkers 1988 5.0 Mustang LX that in stock for ran 15.20, my car with its slightly modified 250 OHC-6 ran 14.5 at the time, he built the Mustang until it ran high 13's & said I would never beat that time with my "boat anchor" needless to say he was wrong. But it was about 10X more work than I envisioned.

It is for sale if anyone is interested.

__________________
Jeff R
60 Jaguar Mark 2, 3.8L Automatic
67 Sprint Firebird 230 OHC-6 4-Speed A/C
78 Catlina Safari, Pontiac 400 powered
77 Astre Formula, 215 Buick V-8 T-5
73 Lemans Safari, 400 4bbl 4-speed
71 Catalina Enforcer, 455 4bbl
06 Mallet Solstice #024 LS2, Now with a Tremec 6060 6-speed!
2012 F-150 Echo Boost (My local Ford Dealer SUX!!!)
2020 Dodge Charger Scat pack (recovered)