whats my max rpm?
Thread Starter
Senior Member
Joined: Feb 2010
Posts: 258
Likes: 0
From: in my car
Car: 1987 Gta Trans Am
Engine: 383 Stroker
Transmission: t-56
Axle/Gears: 3.47 02 SS rear end
whats my max rpm?
I have a 383 and i just swapped a t56 in. Idk what i should set the rev limiter too. So what do you think it should be? Heres the specs.
383 6.3 motor. 350 bored .040 over. 3.75” stroke crank. This motor features the following
PBM Aluminum Heads, 220cc runners 2.02 and 1.60 valves 58cc chambers
Comp camshaft 510/520 lift 230/236 Duration 112 LSA
Speed pro coated pistons
Eagle I beams
Procomp camshaft
MLS heads gaskets
PBM 1.6 Roller rockers
Weiand 7504 intake manifold
750 edelbrock carb
383 6.3 motor. 350 bored .040 over. 3.75” stroke crank. This motor features the following
PBM Aluminum Heads, 220cc runners 2.02 and 1.60 valves 58cc chambers
Comp camshaft 510/520 lift 230/236 Duration 112 LSA
Speed pro coated pistons
Eagle I beams
Procomp camshaft
MLS heads gaskets
PBM 1.6 Roller rockers
Weiand 7504 intake manifold
750 edelbrock carb
Supreme Member
Joined: Jul 1999
Posts: 1,556
Likes: 28
From: Adrian, Mi, USA
Car: 1988 Pontiac Firebird Formula
Engine: 5.7 TPI
Transmission: 700R4
Re: whats my max rpm?
Forged or cast parts?
Cast: Stay under 5500-6000
Forged: bump the above numbers by about 500.
Balanced? You can probably go higher.
Cast: Stay under 5500-6000
Forged: bump the above numbers by about 500.
Balanced? You can probably go higher.
Senior Member
Joined: Dec 2009
Posts: 850
Likes: 8
From: Chilliwack BC
Car: White 1987 IROC-Z
Engine: 305 TPI LB9, 215 HP
Transmission: Borg-Warner T5 NWC
Axle/Gears: Borg-Warner 7.75 with 3.27 ratio
Re: whats my max rpm?
Hello ploegi!!
Correct me if I'm wrong, but isn't the rpm limit determined by the valve train?? As I thought that the limit was there to prevent valve float, which in turn causes valves, and pistons to meet, which is very detrimental to an engines life span!!
Correct me if I'm wrong, but isn't the rpm limit determined by the valve train?? As I thought that the limit was there to prevent valve float, which in turn causes valves, and pistons to meet, which is very detrimental to an engines life span!!
Thread Starter
Senior Member
Joined: Feb 2010
Posts: 258
Likes: 0
From: in my car
Car: 1987 Gta Trans Am
Engine: 383 Stroker
Transmission: t-56
Axle/Gears: 3.47 02 SS rear end
Re: whats my max rpm?
Yes thats right. But the rpm limit isnt ONLY determined by valve train. Its just another part. Forged internals raise it a bit, but is mainly for durability and forced induction. I wont be hard on this engine, but was just curious. Thanks for the replys guys
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Joined: Oct 2002
Posts: 9,067
Likes: 1
From: Saskatoon, SK, Canada
Car: '83 Z28, '07 Charger SRT8
Engine: 454ci, 6.1 Hemi
Transmission: TH350, A5
Axle/Gears: 2.73 posi, 3.06 posi
Re: whats my max rpm?
I'd just set it to 6000... that cam is probably going to make the power peak around 5800 in that motor, so theres no point revving it much higher than that anyway.
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