Gm Crate Motor ? - Team Camaro Tech
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post #1 of 7 (permalink) Old Sep 21st, 05, 06:42 AM Thread Starter
 
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Gm Crate Motor ?

Crate motor - I just purchased a 1969 Z-28 with what the seller called a crate motor in it. Can anyone tell me exactly what it is ?? I looked over GM crate motors and this number is not there. VO523ZZ3 on front pad. The block casting is not real clear but I think it is 57LGSGI. It has Angle plug alumimum heads # 10088113 on it with a GM Bowtie Intake.
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post #2 of 7 (permalink) Old Sep 21st, 05, 06:57 AM
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Re: Gm Crate Motor ?

Welcome Jim!

That would be a ZZ3 crate engine from GM Performance Products (GMPP). It hasn't been made in a while; it was replaced with the ZZ4. Pretty similar specs to the ZZ4, with just a little less compression (9.8:1 or so).

Eric
69 'vert project big block/TKO 600 RR
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post #3 of 7 (permalink) Old Sep 21st, 05, 11:25 AM
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Re: Gm Crate Motor ?

340 hp, i believe.

you don't plan sincerity.
you have to make it up on the spot.

wanna hear about 20 years ago when i was too smart to know any better?
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post #4 of 7 (permalink) Old Sep 21st, 05, 11:45 AM Thread Starter
 
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Re: Gm Crate Motor ?

Quote:
Originally Posted by Eric Kammerer
Welcome Jim!

That would be a ZZ3 crate engine from GM Performance Products (GMPP). It hasn't been made in a while; it was replaced with the ZZ4. Pretty similar specs to the ZZ4, with just a little less compression (9.8:1 or so).
Where would I get the specs for the Camshaft ? I assume it it a one piece rear main block, 4 bolt or 2 bolt ? LT-1 block ? Steel or cast crank ?

Thanks, Jim
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post #5 of 7 (permalink) Old Sep 21st, 05, 12:17 PM
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Re: Gm Crate Motor ?

Should be a 1 piece rear main seal, 4 bolt mains, NOT LT-1.

I believe the cam is the same as the ZZ4. If so, 208/221 @ .050, .474/.510, 112 LSA, hydraulic roller, 1.5 rocker ratio.

As I recall, the ZZ3 used a cast crank, but I'm not sure on that. The ZZ4 has a forged steel crank.


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post #6 of 7 (permalink) Old Sep 22nd, 05, 09:06 AM Thread Starter
 
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Re: Gm Crate Motor ?

Quote:
Originally Posted by BPOS
Should be a 1 piece rear main seal, 4 bolt mains, NOT LT-1.

I believe the cam is the same as the ZZ4. If so, 208/221 @ .050, .474/.510, 112 LSA, hydraulic roller, 1.5 rocker ratio.

As I recall, the ZZ3 used a cast crank, but I'm not sure on that. The ZZ4 has a forged steel crank.
Thanks for the info.
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post #7 of 7 (permalink) Old Sep 22nd, 05, 11:32 AM
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Re: Gm Crate Motor ?

i recall the cam being smaller than the ZZ4 cam- that's part of where they found 15 hp for the ZZ4.
cast steel crank and "pink" rods with forged pistons sounds right to me.

you don't plan sincerity.
you have to make it up on the spot.

wanna hear about 20 years ago when i was too smart to know any better?
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