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914World.com _ 914World Garage _ SBC head casting question.

Posted by: Dr. Roger Mar 15 2005, 12:43 AM

I just scored a 4 bolt main 5.7 liter long block. I seems to have 2.02 heads...
Most likely a 2002 mfg engine. Out of a truck.
I'm trying to figure out what exactly it is and it's specs so I can order special treats for her insides....
I will check this string daily...
Pic attached.
All question will be answered and apreciated.
Muchas gracias!!
user posted image

Posted by: V6914 Mar 15 2005, 02:43 AM

Roger, you can get the # off the block, call a Chevrolet dealer, the parts dept, will be able to look up the specs on the motor, the year, what it came out of.

The thing about truck motors, if it's a 4 bolt main it probally has a cast crank, and the 2 bolt main truck motors had a steel crank. And if it's an original truck motor, the heads arn't 202's, unless there not original, or it's not out of a truck. The parts dept will clear it all up for you.

I couldn't tell much by the attached pic

Posted by: BIGKAT_83 Mar 15 2005, 02:54 AM

Here is a list of all of the Chevrolet casting numbers. You can figure out what you have with these.

http://www.mortec.com/castnum.htm

Posted by: Dr. Roger Mar 15 2005, 01:17 PM

Thanks so much guys.

I looked it up and it apparently came from way back and was used on early and late models. Non Vortec obviously. The '02 applicatin was for 1 ton cargo vans.

1.94" intakes... The 2.02" measurement was in the dark. =-)

Oh well, I guess I'll go the mid range cam, low rise split plentum intake, 650cfm mechanical secondary, headers route.

Anyone got an extra Mallory dual point?