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  #31 (permalink)  
Old 04-11-2012, 05:00 PM
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The KREs are certainly good heads. For a "D-port", they're probably as good or better than the new E-Ds. Not much info "out there" yet about the Edelbrocks. I like the high-swirl chamber in the KRE. We've done a few, not many. One '66 LeMans goes 11.40s, 3,700 lbs., 434 CID, 93 octane, strictly a street car. Another, on a 461, has yet to be tried, but sure sounds sweet! We do our own port work, so their "CNC" stuff doesn't apply here.

Building a 406 CID Pontiac that will put a '70 T/A in the 12s is "cake". Easy enough to get 450 HP from one with those heads and a reasonable cam. On the larger displacement applications we like the open plenum. For a 400, RPM is a good choice. It's tough to "tune out" the low-end power of a long-stroke Pontiac.

Jim

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  #32 (permalink)  
Old 04-16-2012, 11:38 AM
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hey, you got the same handle over at performanceyears?
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Old 04-17-2012, 07:00 AM
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BH,

Yup. But I seldom "go" there anymore. Too much polarization. The "tractor motor" crowd is relentless about how THEIR "approach" is the ONLY approach. Considering they're usually a second or more "behind" in 1/4 mile performance at similar "levels of tune", it's okay. We just keep on revvin' them! Our 4343s STOMP their 461s... (:-

I still go to PZ and PSP from time to time. Less ego, more real racers, etc. I don't feel those that race ONLY against other Pontiacs are REALLY "racing". Most of our racer customers are "in the mix" at various tracks, competing against all the "other" brands, and showing quite well, actually.

We recently had a dyno operator in NJ refuse to take one customer's 406 beyond 6,000. It was "built for it" ("long rods", light pistons, solid cam). The power peak hadn't been reached yet, when they shut it down. Nothing "wrong" with revving a Pontiac as long as it has the right "stuff" in the bottom end. The owner says in driving it, it "blows past 6,000 like nuthin'".... I estimate the peak at 6,700 or so. Pump-gas street engine. Iron heads.

FWIW

Jim
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Old 08-12-2012, 02:04 AM
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Well, I found this thread 4 months late, but just wanted to comment on the engine write up in Car Craft. The Westech dyno wouldn't hold the engine under 3,000 RPM. At the lowest recorded point on the readout, the engine was already producing over 600 foot pounds of torque. The torque curve wasn't much of a curve - closer to a straight line. A couple more pics of the worker ants helping Ken Crocie change out three carbs tested on each of the three manifolds that were tested during the day. I'm the one in the white T-shirt. Fun day.
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