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 Post subject: big block hp question.
PostPosted: Sun Jun 09, 2013 4:25 pm 
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Renting Helmet

Joined: Sun Jun 02, 2013 9:27 pm
Posts: 5
new to drag racing :freakout . first big block ever, building for a weekend track toy. the block is a 69 427 bored to 4.320 with wisco pistons 1.645 compression height /+.36cc / +.455 domes. A forged 4340 crank 4.00stroke,6.135 H-beam rods, heads are chevy closed chamber l-s 6 292 rectangle port that have been port matched,the intake is a victor jr 454r ,1.7 gold roller rockers,the cam is a crane f-256, with 292/300 adv duration 256/264 @ .50 with .618-.638 lift and 108 lobe separation,the carb is a preform 950cfm.forgot the compression should be 13.5-1 with the heads being milled to 105 chambers. any ideas of horse power with this combo?? thanks for any info..


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Posted: Tue Dec 10, 2013 8:14 pm 


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 Post subject: Re: big block hp question.
PostPosted: Tue Dec 10, 2013 8:14 pm 
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Burnout Box

Joined: Tue Dec 10, 2013 6:44 pm
Posts: 12
650 plus, that motor will like rpms probably could use duration and lift. Don't know the rest of combo, chassis and gearing,cyl peak cyl flow at what lift. I would just put it together and run it .


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