Quote:
Originally Posted by Lee
My 455 also has the 66's. Unfortunately for me, mine came with the cheap cast pistons that have the bevel around the edge of the piston, lowering the CR even more. My final CR is less than 8.0:1.
But with a set of Tri-Y headers, a really good exhaust system, and a custom low-lift HFT cam, it runs pretty decent. With a stock torque converter and a 3.08 posi, it will smoke the tires off-idle, even at just part -throttle. The motor is DONE by 4800rpm, but it has killer torque and runs great on the cheapest gas I can find.
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That's good to know because I'm torn between 3.0 and 3.25 gears on my 9 inch. My pistons are Silvolite and only a very small bevel. I won't have Tri-Y, just the RA cast "headers" and X pypes 2.5". Regardless what heads I use I plan on 9:1 ish CR and 91 octane fuel.
I'm worried about the stock rods though. Might get them honed with ARP bolts. Cost would be $180 for that.
I'm curious the specs of your custom cam.