Thread: Engine help

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A good friend of mine has given me a 350 Crate motor with around 35,000 miles on it.

The block ID is 10066036 which decodes to 1994, 350, Goodwrench crate motor, 2 piece rear main seal, “Hecho en Mexico”.

The heads ID is 33417369 which decodes to 1990-up 350, Gen. 1 Goodwrench crate motor, “Hecho en Mexico”, 76cc.

Any idea on the horse power and compression ratio.

I’ve got a 305 in my 1986 Silverado. I’ve had a Holley 670 cfm Pro-Jection installed on it.

I figure that the 350 can’t get any worst gas mileage.

The 350’s got an Edelbrock Performer RPM manifold.

What are some performance upgrades could I do without hurting the mileage?

I was thinking about headers and a small cam.

Which ones would y’all recommend?

Would I be better off with a carburetor?

Thanks for any help.

You can get all the matching stuff to go with that intake at www.edelbrock.com. It gives dyno test info and just about anything you would want to know. Edelbrock makes a good injector system but it is around $2000. I guess it depends on how much you want to spend. I have a 350 with a Performer intake, a mild smooth idle cam,Edelbrock 600CFM carb,antique Mr. Gasket headers,2 1/2" duals with glasspacks. I only get about 10 miles to the gallon.

Originally posted by Streets
Hmmmmmmmmm.. where did ya get 1994 from?? Last year for the 2 pc. rear seals was '86 in the small blocks and a "TargetMaster/Goodwrench" back then was a rebuilt engine off the assembly line which meant that maybe one cylinder bore was too large or one lifter bore was too big or the mains were oversized when they bored them... or something else was not in specs. and the mexicanwetbacks would custom make an oversized lifter for that hole or a piston that would fit the +.0045 sized bore.. or cut down an oversized valve to fit the oversized seat in the head or plug and stake and weld a crack in the casting somewhere in the block.. They were/are NOT the crate motors of todays standards at all!
Ya never knew what you were gettin with a Targetmaster block..

Got it from a book at the library.

I think the block was cast in '94, I don't think it's a new style 350.

It doesn't have the center bolts on the valve covers.