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Does anyone know how I can obtain an owners manual for a GM 502 crate motor?
My 69 vette came with a 502 motor with the block-Part number-10237300. The previous owner put it in, but he does not have the owners manual with him anymore.
I have tried calling GM performance and Helm without much success.
I just got off the phone with GM performance parts (again).
The representative asked me what kind of car the motor is in right now.
I said that it was a 502 crate motor and it does not matter which car it is in. After 3 minutes of hold, she very confidently told me that GM does not make 502 motors anymore
I asked for a manual when I bought my 454HO a year ago and I was told there wasn't one.......nothing came with the motor except some GM Performance stickers and a single page about the warranty, which is null & void because it's an export.........
As for GM not making 502's anymore: BWWWWWAHAHAHAHAAAAA !!!!!!
Just called Scoggin Dickey. The sales representative that I talked to said that GM does not sell service manuals for their crate motors. It's available only for GM dealerships, which means that you have to have your crate motors serviced by the dealer.
My RamJet 502 came with a "RamJet 502 System 12497323 Specification". It has a GM part# 12486609. Consists of 7 stapled, double sided pages of System description, specifications, installation procedure, break-in, and parts list. Not much in the way of detail.
Thanks to both of you Skunkvette & Bullshark
A couple of last questions.
What's the spark plug gap that you have set ?
What kind of spark plug cables do you use.
I am trying to do a full tune up and I am so annoyed by the fact that GM does not give out service information for these crate motors
I can copy my ZZ502/502 "Installation Instruction" package for you, but mine is the 12371204 kit(Long block) Aluminum heads,etc....I would think most torque specs,etc same as yours maybe....(parts list different though)..
Here is link to Service Manual for the 502 Ram Jet:
About the closest article or catalogue information on the crate engines is the "GM Performance Parts" catalogue. The 2001 version part number is PP NO. 13, P/N 12497881. I believe available in book stores.