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"575 GM 540" Build 1988-1992

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"575 GM 540" Build 1988-1992


Old 01-11-2019, 09:12 AM
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Join Date: Oct 2009
Location: Miami, FL
My Boat: 1985 Mistress, 1987 Flat Deck, 30 Corsa
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Default "575 GM 540" Build 1988-1992

Hi, Im trying to build a 1988-1992 "575 GM 540"

I think its a 502 Block Non Roller and 4.25 Crank and 088 Heads.

Would it be better to use a 502 Roller Block?

1- What Pistons and Rods?
2- Camshaft?
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Old 01-11-2019, 02:45 PM
Join Date: Apr 2018
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The only real gain going with a gen 6 would be the one piece rear main seal, but I've never had a problem with the two piece!! the lifter bores are higher but again don't see many problems with the older blocks.
I would defo go with the later step nose cam and use the gen 6 cam retainer Comp Cam 01-446-11 would be a good cam.
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Old 01-14-2019, 07:13 AM
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Location: new baltimore mi
My Boat: 1989 scarab 38 excel-1986 scarabIII-1987 nova syder tw-330's-340/277/260 sea ray
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Talking 540 s

not sure what you are trying to build a 540 cu in motor??

a 540 is 4.25 stroke and 4.5 bore

i run isky red ball series solid roller lifters, 700 lift 285/295 duration

my motors a mark4

srp piston 10.3 to 1
eagle rods

never had issues with two parts rear main seal.

Last edited by flashgordon; 01-14-2019 at 07:15 AM. Reason: spelling
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