500 hp and LT4 heads
#1
500 hp and LT4 heads
I'm looking to make around 500 ponys at the wheels in Denver, Colorado-less air up here-
Question is are LT4 heads stock capable of doing this? I had some mild bowl work done and didn't want to spend much more if it's not need, but what are your thoughts.
It's a 388 with the GM 847 cam w/1.6 rr. Most all other bolt ons and gears.
Question is are LT4 heads stock capable of doing this? I had some mild bowl work done and didn't want to spend much more if it's not need, but what are your thoughts.
It's a 388 with the GM 847 cam w/1.6 rr. Most all other bolt ons and gears.
#5
Re: 500 hp and LT4 heads
Just playing the numbers game, AT SEA LEVEL you would need to make about 575flywheelHP to net 500rwHP with a manual trans setup. At the elevation of Denver, you are giving up 15% due to air density.... that would mean you would have to have a head that would support the equivalent of about 675flywheelHP.... don't think you'll make it. If you are talking SAE corrected rwHP, you've got a chance, but of course that means you only be putting an uncorrected 425HP to the rear wheels on the streets of Denver.
#7
Re: 500 hp and LT4 heads
I wasn't too sure what he meant by "LT4 heads stock". Agree.... a good set of 300+cfm worked factory LT4's would be hard pressed to make that kind of HP. A truely "stock" set of LT4's and the 847 wouldn't have a snowballs' chance in hell of coming close.
#9
Re: 500 hp and LT4 heads
I forgot about that search button, I apologize.
I think the verdict is in, further head work is needed, matched with a cam.
Thanks for the input, this forum has been very helpful!!
I think the verdict is in, further head work is needed, matched with a cam.
Thanks for the input, this forum has been very helpful!!
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Henson071
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05-04-2015 12:23 PM