Great day on the dyno
I pulled the motor on the Camaro to put in a new cam and freshen the rings/ bearings/ gaskets. The old cam/ heads/ FI setup was just not a happy combo. To the point, my 534 CI was making 366 RWHP, and that was after a competent FI tuner was done.
My engine builder is my friend & neighbor, has been building race motors for over 40 years (out of his garage), and is well respected as someone who can design an engine with impressive power. He has done well in the Engine Masters several times.
The old cam was a mystery, it had some markings, but nothing we could put with a manufacturer. After measuring it, my builder figured it must be some type of nitrous cam. Way wrong for my street motor.
We also decided to ditch the Dart Pro 1 CNC heads (too big for the street), and opted for AFR 305 heads. I was able to sell the Darts' for the price of the new AFRs to boot!!
The old setup was supposed to be 10.2:1 CR, but measured out to about 9.75. With the old cam, it only cranked about 170 PSI.
New cam/ new heads/ a quick hone & fresh rings & bearings. Now it has 11.5 CR, and cranks 220-225 PSI. Big difference.
Went to the dyno on Thursday. Running with an older GM computer that was not up to supplying my big CI motor with enough fuel, it still managed 696 hp at 5900 rpm. Made over 615 TQ all the way from 3400 to 5900...the max was 686.4 @ 4600. On 92 octane. And that was running almost 14:1 A/F. Can't wait to dyno it in the car with my computer & injectors. At 12-12.5 A/F it should be something.
Should be a bit more fun to drive, I'm thinkin'.
And only another 2 months or so of winter....
Sorry if I'm boasting, but needless to say, I am pumped!
__________________
Bill
'69 Camaro / 534 BBC / DSE Built
'67 C10 / LS-3 w/Magnuson / Roadster Shop Chassis (SOLD)
'71 Blazer / LT4 / 8L90 / Roadster Shop Chassis / Ride Tech Air Susp.
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