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post #1 of 7 (permalink) Old 02-17-2017, 07:48 AM Thread Starter
 
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Guess my HP

Getting ready to put the new motor on the dyno for break in/tune/pulls before it gets dropped into my 65. Motor is all new from Butler.
69 400 block with a 4.25" stroker kit to get 461 cu in.
10.5/1 compression
Edelbrock round port heads cnc flowed to 330+ cfm.
Lunati hydraulic roller cam with .625 lift at the valves and .254 duration at .050 lift.
Performer RPM manifold with Pro Systems 850 custom carb.
Dougs 1 7/8" full length round port headers.
All logos and names milled off and evertything painted 65 Pontiac blue. Looks bone stock for a quick peek under the hood lol.
any guesses for HP and TQ?
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post #2 of 7 (permalink) Old 02-17-2017, 12:03 PM
 
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435/500
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post #3 of 7 (permalink) Old 02-17-2017, 12:14 PM
 
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538 HP/565 torque
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post #4 of 7 (permalink) Old 02-17-2017, 04:25 PM
 
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472 / 598
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post #5 of 7 (permalink) Old 02-17-2017, 06:20 PM
 
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590hp @ 6500 RPM's 550TQ @ 5000 RPM's

Revised my numbers using the Dyno 2000 program.

Last edited by PontiacJim; 02-18-2017 at 01:08 PM.
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post #6 of 7 (permalink) Old 02-17-2017, 07:49 PM Thread Starter
 
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hope you guys are wrong lol. Jim Butler is expecting this thing to pull somewhere around 600 HP.
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post #7 of 7 (permalink) Old 02-20-2017, 09:56 AM
 
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I just pulled numbers out of my keister. I have no idea what power you will make... ;P
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  Pontiac GTO Forum > The 1964-1974 Pontiac Tempest, Lemans & GTO > 1964-1974 Tempest, LeMans & GTO Engine Tuning and High Performance

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