What heads are these? - Chevelle Tech
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post #1 of 5 (permalink) Old Jul 27th, 09, 10:20 PM Thread Starter
Art
 
Join Date: Apr 2009
Location: So Cal
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What heads are these?

What can you tell me about these heads #338882? It is not the original motor, went from 307 to 350 about 15 years ago. My grandfather did all the work and now I'm trying to figure all this out. I went to autozone to get new spark plugs but they were too big, wouldn't fit in the hole.


Driverside head


The engine is a remanufactured 350 but I don't remember if the heads came with it or we used the ones from the 307.

1970 Chevelle 350 700R4
1999 Camaro SS
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post #2 of 5 (permalink) Old Jul 27th, 09, 10:49 PM
Tech Team
 
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Location: Waukesha WI
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Re: What heads are these?

Cylinder Head Casting Numbers
Years Casting# CID Intake Exhaust CC
1971-75 330545 307,350 1.72 1.5001 74
1971-73 330862 400 1.94 1.5001 -
1971-76 333881 350 1.72 1.5001 -
1970-80 333882 350,400 1.94 1.5 76
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post #3 of 5 (permalink) Old Jul 27th, 09, 11:01 PM
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Mr Bill
 
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Re: What heads are these?

Nothing special, used on a bazzilion Small Blocks. They use a taper seat plug like the R43TS

Bill Koustenis
Advanced Automotive Machine
Waldorf Md

Enginerepairshop.com

1971 Heavy Chevy - original owner
1984 Buick Riviera - original owner (Wife's car)
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post #4 of 5 (permalink) Old Jul 28th, 09, 1:15 AM Thread Starter
Art
 
Join Date: Apr 2009
Location: So Cal
Posts: 19
Re: What heads are these?

Thanks guys. I saw those casting #'s, but is that a typo or do my heads have a typo? Haha! 338882. I was just worried that my heads were from a smaller engine and the spark plugs that autozone calls for are beefier than the ones I have now. The plugs I have are bosch platnium HR9APX.

1970 Chevelle 350 700R4
1999 Camaro SS
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post #5 of 5 (permalink) Old Jul 28th, 09, 2:31 AM
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Duane
 
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Location: s.w.Michigan
Posts: 31
Re: What heads are these?

Casting # 338882, Built from 1970 thru 1986, 882's are open chamber 76cc if memory serves correct. The right plugs are tapered and will take a 5/8 socket to put them in. Dont get these heads hot by no means.
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