Richie Carbone

iTrader: (3)

What would the CR be on unported stock 5.3 heads milled .015?

Thanks.

10secondZ

iTrader: (24)

with them completely stock (even the valves) would net 11.04:1 with a 60cc chamber and a .054" gasket..milled .015 would get you 11.18:1 ...but de-shroud the valves and slap in some 2.02/1.57's and come out to around 62-63cc's say 63 with polished chamber and deshrouded..that would get you 10.63:1....Later,

Carter

Richie Carbone

iTrader: (3)

Thanks Carter. If I can get to 11.0:1 I'll just slap them on without milling them.

Later

ONEBADWS6

iTrader: (22)

What would they be with .40 off with 2.02 and 1.60 valves?

10secondZ

iTrader: (24)

.040 would yeild 11.48:1 on a stock bottom end with 2.02 valves (juged on 57cc chamber) say for every .006" milled is 1cc off chamber volume..hope this help's...Later,

Carter

ne14a6t9

ive seen in gm perf cataloge 63cc's is 10.8 to one, they mill .035 from a stock head to get it, 61cc's is 11.0-1

2001CamaroGuy

iTrader: (6)

60 cc chamber made 11.1:1 CR on my heads....