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Discussion Starter #1
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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Discussion Starter #6
hope you guys are wrong lol. Jim Butler is expecting this thing to pull somewhere around 600 HP.
 
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