427 build, LOW HP #s
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427 build, LOW HP #s
So I just finished building my new motor and wasn't very happy with the hp numbers. On a mustang dyno it is putting down 430hp. Here is what the engine is:
427ci ls motor
235 trickflow heads milled
ross pistons -20cc
eagle h beam rods
beck sheetmetal intake
95 mm tb
large hydraulic roller cam
all through a turbo350/4500 vig stall/9inch with 373's
Any ideas? I figured I would be around 500rwhp...
Maybe compression is to low?
Or stall eating up alot of hp?
427ci ls motor
235 trickflow heads milled
ross pistons -20cc
eagle h beam rods
beck sheetmetal intake
95 mm tb
large hydraulic roller cam
all through a turbo350/4500 vig stall/9inch with 373's
Any ideas? I figured I would be around 500rwhp...
Maybe compression is to low?
Or stall eating up alot of hp?
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What is your compression? How good is the tune? Does it feel strong?
Lots of questions to ask. I try not to get too caught up in dyno numbers as they can vary drastically from fron dyno to dyno. As long as you are sure there are not issues with it, take it to the track and see how it performs.
Lots of questions to ask. I try not to get too caught up in dyno numbers as they can vary drastically from fron dyno to dyno. As long as you are sure there are not issues with it, take it to the track and see how it performs.
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Just for giggles and this applies to any engine thats missing power, do a compression test..
When you say large cam, how large are we talking? between 230 and 240 duration? higher? how does it drive? is it strong?
theres a bunch of variables, if your tune is spot on then the problem could be valve timing, which in turn cause many other problems, including providing you with inaccurate compression figures..
check your compression.. and go from there...
When you say large cam, how large are we talking? between 230 and 240 duration? higher? how does it drive? is it strong?
theres a bunch of variables, if your tune is spot on then the problem could be valve timing, which in turn cause many other problems, including providing you with inaccurate compression figures..
check your compression.. and go from there...