Quote:
Originally Posted by Cole
Details on the new rpm motor
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RPM has been great to deal with!
It is a 454LS that used to be in Bad Penny except only the crank and rods are the same.
LS3 block with Darton dry sleeves bored to 4.185" by Steve Demerjian of R.E.D
Wiseco/K1 crank and rods, with custom Ross pistons (the machine shop did the machine work based off of a single old piston the original would be builder sent over so I had to have 4.182" pistons made)
reused the old cam from the 454 LS2, which is 243/259, 114 LSA
RHS LS7 heads, Comp valvetrain, springs, and SS valves
FAST 102 intake and throttle body.
On the loaded chassis dyno at RPM it made 585/565 at 6800rpm. This was a safe break in tune and really the only number we have from a full pull so far. I told them I'd bring it back after putting a few miles on it, I've gotten the miles, just haven't taken the car back. Since it makes enough power right now it hasn't been a priority. I think the motor has been a bit choked down with the old headers on it which are 1-3/4." I just replaced the header gaskets because one had burned through and found they were round 1-1/2" ones. Now I'm curious what it will do with a set of DSE 1-7/8" headers.