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If anyone is interested, I can post the dyno sheets tommorow??

Cheers,

Arnie

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How do I get one of those cams

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Dyno sheet #2 Air/Fuel

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You didn't play with the timing? I know those cams like
more timing.. I run mine 40* total..

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We started at 32 degrees then 34 degrees, then 37 and the plugs looked happy there...

Perhaps on the dyno where we can control the engine temp it may have pulled harder at 38-39, but in the real world in my Super Bee cruising around on a hot summer day, 37 will be less prone to detonation on 91 octane pump gas.

If i decide to take it to the track some day for a test and tune, i will bring some race gas to mix in, and try more timing. Bob K also mentioned he runs up to 40 degrees, but he runs race gas.

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Dyno sheet #2 Air/Fuel

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Looks too lean up high. How come it wasn't corrected??? power may not have fallen off as much up there.

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We tried more jet and it lost power on the low and mid range... This jetting made the most average HP and TQ from 3,000 rpm to 6,000 rpm which is where this street car will be driven. It is a balance thing.

Also since this was dynoed with manifolds but no mufflers, the full exhaust will change the jetting requiremnts a bit and hotter temps from the cast manifold under the hood will also richen up the mixture.

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Arnie did you guys try making the outboard carbs richer on the dyno? My best set of carbs had .097 orifices on the passenger sides and .094 on the driver side with Holley 64 jets inthe center carb. and a 4.5 power valve with a .060 PVRC in the meterring block The BSFC stayed under .42 with that jetting, the AFR would run between 13.3 and 13.6 at WOT. I treid jetting the outboards up by .004 on both isdes and the car slowed down .2 ET and 2 MPH in the 1/4

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Cab, this had 66 jets in the center and the idle a/F mixture was awesome, and 82 passenger side, 84 drivers side Holley jets in the end carbs.

6.5 power valve was fine as the Mr six pack cam had 19 in vaccum at idle...

This motor was happy with slightly leaner A/F in the higher RPM range!

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I'm impressed, I know the Bob K cammed engines run hard, but I figured they had spent so much time tuning them that they were making alot of under the curve power. 54 horsepower is quite a gain. And those flow numbers really aren't that much more than stock 906s, sometimes someone's "pocket ported heads" flow 270 cfm which I figured was the case here.

You said its a cast iron intake, I assume a cast iron six pack setup?

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GTX matt, Yes it is a cast iron Six pack manifold.

Keep in mind everyones flow bench reads different which is why they don't race flow benches...

Prior to the latest clean up in the bowls and new valve job my heads only flowed:

Intake:
.100 = 62.5
.200 = 121.8
.300 = 171.4
.400 = 204.8
.500 = 213.2
.600 = 221.6


So they gained close to 30 cfm at .200 and .300 lift, which is what I was after.

I am going to have to take this to the track later this summer and see what it ET's...

Cheers,

Arnie

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Nice results Arnie.

I noticed the electric water pump drive. Were you able to make any pulls with the pump driven by the crank?

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