Rough idea on HP?
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Senior User
Joined: Jan 2010
Posts: 137
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From: Wenatchee, WA
Rough idea on HP?
Hey there. Now i know that any response i get will be rough guess at best but i would still like to be in the ball park on how much HP i have under the hood. The engine is a 400. It was taken down to the block 2 years ago and rebuilt from there. Here is what has been done to it. It was tore down to the block and then hot tanked, has a .530 lift edelbrock cam with edelbrock lifters, edelbrock valve springs, heads were completely rebuilt, ported and polished, summit racing double roller timing chain set, summit racing high output oil pump, summit racing headers, edelbrock performer intake manifold, edelbrock 750cfm carburater, MSD high performance coil, MSD cap and motor, new distributer, summit racing high performance water pump and edelbrock valve covers. We were stupid and didn't get it dyno tested before we put it in :/ So what do you think i've got? Thanks guys.
Junior User
Joined: Feb 2009
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i didnt see what intake either but assuming its a edl performer and a .530 lift cam with say 210-220 degrees duration, im gona guess 325hp, maybe less, maybe a tad more. probably upwards of 400lbs of torque though 400's can put down some torque
Senior User
Joined: Aug 2011
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Just a thought, have you tried putting your engine's specs into Comp Cams program? It's available for free from their website.
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Fleet Mechanic
Joined: Nov 2010
Posts: 1,501
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From: Axtell, TX
295TH7 Thumper cam has .531/.515 lift and 242/257 duration @ .050.
The 280H is .530/.530 and 230/230.
The difference between them on the Comp Online dyno is 30hp and 66ft lbs. So there is quite a large range it could be.
I looked for an edelbrock cam @ .530 lift but couldn't find anything?
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