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Re: The 541 is headed to the dyno! Any guesses?
[Re: AndyF]
#3061750
07/23/22 12:12 AM
07/23/22 12:12 AM
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Joined: Jan 2003
Posts: 10,016 Frostbitefalls MN (Rocky&Bullw...
gregsdart
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 10,016
Frostbitefalls MN (Rocky&Bullw...
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Two questions, is there a beehive spring that fits your cam? And what can be done with the tunnelram? Many years ago i had a 535 with 906 heads, picked up .15 et in the 1/4 by hogging out that tunnel ram on it. Those two together might make a big difference. If you have a converter built to 340/hemi specs, it will flash over 3,000 rpm , (3400?) a nd that allows a little leeway in manifold tuning, i would think.
Last edited by gregsdart; 07/23/22 12:15 AM.
8..603 156 mph best, 2905 lbs 549, indy 572-13, alky
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Re: The 541 is headed to the dyno! Any guesses?
[Re: HardcoreB]
#3064265
08/01/22 10:34 AM
08/01/22 10:34 AM
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Joined: Jan 2003
Posts: 14,514 So. Burlington, Vt.
fast68plymouth
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 14,514
So. Burlington, Vt.
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There was a BBM on the dyno here last week. Not a build we contributed to...... just provided the dyno service.
TF heads with their HR springs(PAC 1294), TF HR cam, Howard’s HR lifters(not sure which version), HS 1.5 rockers.
Tthe report I got is things were solid thru 5800rpm, and at 5900 the lifters gave up.
Those heads come set up with the spring installed height at a nominal 1.950”. The specs for the PAC 1294 are 154@1.950/410@1.350.
68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123 Dealer for Comp Cams/Indy Heads
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