combo/break in??

Robocop · 04-10-2002, 04:28 AM

I almost have my choices narrowed down and have a few last minute questions.I am ordering a D.S.S. stroker with AFR heads and I like the systemax intake but really have not decided as to the intake yet.I am learning this process as I go and can not afford any mistakes.I plan on using about 8-9 lbs. of boost and was curious if I should allow the motor a break in time before I install the boost or will it hurt to assemble everything and break the motor in while running boost?Will a 331 with good heads,intake and 8lbs. of boost get me 400 to 450 hp?Thanks for any advice as I am sure I will need a lot more before this is over.

WADS56 · 04-10-2002, 06:09 AM

Best way to break in rings is with pressure. I broke my 347 in with 10lbs of boost and I would do it again. Now I have a 347 that uses no oil and a set of rings that seated great.

302 LX Eric · 04-10-2002, 07:49 AM

A properly built and tuned 331 with AFR's, mathcing cam, rockers, etc. with say 9:1 compression and 8-9 psi at the manifold will easily net you 450 hp, maybe more.

Call Tom Nagel over at DSS, good people with good advice and quality strokers.

E

04-10-2002, 04:28 AM	#1
Robocop Registered Member Join Date: Feb 2002 Location: Birmingham, Al Posts: 65	combo/break in?? I almost have my choices narrowed down and have a few last minute questions.I am ordering a D.S.S. stroker with AFR heads and I like the systemax intake but really have not decided as to the intake yet.I am learning this process as I go and can not afford any mistakes.I plan on using about 8-9 lbs. of boost and was curious if I should allow the motor a break in time before I install the boost or will it hurt to assemble everything and break the motor in while running boost?Will a 331 with good heads,intake and 8lbs. of boost get me 400 to 450 hp?Thanks for any advice as I am sure I will need a lot more before this is over. __________________ 1992 G.T. oxford white

04-10-2002, 06:09 AM	#2
WADS56 gear banger Join Date: Aug 2000 Location: CHICAGO Posts: 1,144	Best way to break in rings is with pressure. I broke my 347 in with 10lbs of boost and I would do it again. Now I have a 347 that uses no oil and a set of rings that seated great. __________________ 79 Hatch: NA 347, Stage 2 Canfield Heads, Victor JR. Intake, Blueprinted Holley 750 HP, Solid Roller Cam, Shooting for 10's on motor 93 LX: Tremec, dual friction clutch, fms flywheel, Hedman shorties, O/R H-pipe Ricer hater's club member #49

04-10-2002, 07:49 AM	#3
302 LX Eric or '331 LX Eric' Join Date: Jan 1999 Location: Columbus, Ohio Posts: 2,142	A properly built and tuned 331 with AFR's, mathcing cam, rockers, etc. with say 9:1 compression and 8-9 psi at the manifold will easily net you 450 hp, maybe more. Call Tom Nagel over at DSS, good people with good advice and quality strokers. E __________________ 1991 5.0 LX Coupe - 40,750 miles 331 cu. in. / Tremec 3550 / BFG Drag Radials 12.22 @ 114.31 mph - w/1.89 60'