Slow Z28

iTrader: (19)

They have NOT been milled at all compared to stock.

I just had them looked at and tested by AMS(local shop) on a Superflow SS300

This is what they flow uncorrected

Intake had a radius inlet but the exhaust was flowed without a pipe

intake first, then exhaust

.300 186.55 157.73
.400 241.98 181.26
.500 270.58 197.16
.600 292.04 206.70
.650 293.23 211.15
.700 284.29 213.06

Have comp 921 dual springs that was good with my cam at .620 lift

2.08 intake valve
1.60 exhaust valve

$500

They'd work good on a stock cubic inch car, and are at the very edge of being restrictive on a 38x setup in my opinion

Matt D

iTrader: (49)

What casting?

Slow Z28

iTrader: (19)

oops, sorry guys, they are the 853 5.7L casting

these have the centerbolt configuration for 99+

they were done by A.R.E. back when they were actually doing stuff all the sleeved stuff(since I had a 382 all bore by them)

went 11.23 @ 123mph on a 1.65 60ft N/A footbrake

TH350
3.50 rear
28" tall tire
3300lbs

24* of timing for the nitrous
10.5cr on the 382
Speed Inc SS3 cam

power was there, just wsn't exactly the hardest launching car on motor, haha. probably because of the timing being pulled back