master blaster

I'm not sure what the compression would be with 317 heads?, but I was told the seller was planning to run some 62cc heads and with .040 gaskets was around 11.4-11.5 compression.

the combo is

LQ4 Iron Block
Eagle Forged Crankshaft
Eagle H-Beam w/ ARP Rod Bolts
Forged Wiseco 4.030" -3cc Flat Tops
Total Seal Plasma rings
Comp Cams 54-463-11 (247/255 .624"/.624" 114 LSA)
SLP P/P Oil Pump
LS2 Timing chain set
New cam/main bearings
Balanced

if i put 317 heads can i get it to 10.0?

i want to run 13-15#boost procharger

westtexasbuff

iTrader: (40)

Someone correct me if I'm wrong, but I think stock 317s lower your compression by a full point. I will let someone else with more knowledge chime in, but from what I see, yes, I think you could.

Bullitt4110

iTrader: (31)

Is it a stock stroke crank or 4" stroke?

master blaster

its a 408 so a 4'' stroke

rotary1307cc

iTrader: (5)

with the piston .01" out and GM's 4.060 bore HG with the standard ~.051" compressed thickness you are looking at right around ~11.0 static

I believe stock chamber 317's are around 72cc

02LS1ram

iTrader: (17)

Stock 317s r 72cc I'm sure of that. as for comp Im not 100% sure so I'll a knowleagable guy chime in

87silverbullet

iTrader: (11)

If your pistons are .020 down in the hole and your head gaskets have a 4.080 bore I come up with 10.5:1. If the block has been decked to zero and the piston is even with the block I come up with 11:1.

If you use a .051 gasket and your pistons are .020 down in the hole you will get 10.2:1