BruteSBC
Dec 17th, 03, 6:22 PM
sterling pistons...good, bad, what? it says ill have like a 9.28:1 comp ratio, with a real small cc head. i want to run a 10:1 comp ratio or 9.5:1...but with a bigger cc head...any opinions on a good piston?
9.28 with a 58 cc head or a 62 cc head something like that...how much would having a head that small hurt performance? what heads are made that small from aftermarket?
pdq67
Dec 17th, 03, 8:54 PM
Aren't Sterling Pistons just cheap stock type made by K/B??
Heads for 305's have small chambers as well as a rare one for the little bitty '75, 262 motor, or is it 267 motor?? I always get them confused...
Might consider a 305HO, # 601 head?? It has hardened seats, 1.84"/1.50" valves AND a 58 cc double hump type chamber, I think..
pdq67
bigjimzlll
Dec 18th, 03, 9:02 AM
Both Dart and protopline make a small cc head. Darts are 49cc and pros are 50cc. These are both 23º heads. Im running the pros...which cc'd at 54cc's. Becareful with those cheap rebuilder pistons. The way they get the C/R is by raising the pin..hence lowering the piston. Which gives you a horrible quench..on a 350 the compression height should be 1.55..on some rebuilders you have around 1.52
Pat Kelley
Dec 18th, 03, 9:53 PM
Stock pin height for a 5.7" rod in a SB is 1.560". Most, maybe all, replacement cast pistons are 1.540"; .020" shorter. Many forged pistons are 1.550" for use with a 3.500" crank. The combined 1/2 stroke + rod length + pin height should equal 9.000". With replacement cast pistons the total is 8.980". As BigJim said, this really messes up the quench.