ive done a ton of searching but i cant find any opinions on which heads are better in 100% bone stock form. i just bought a 350 that currently has the 882 heads on it with the stock intake manifold, would i be much better of with the 081 heads and the aluminium stock intake? if so would i have to run 93 octane?

the block has codes 010207 and v0307fsj on the engine id code. any input would be greatly appreciated i am putting engine in tomorrow

 

Depends on what pistons are in the block. Gonna have to look at em to find out.

One thing is FOR SURE though; 882 heads are about THE WORST GARBAGE there is. ANY other heads (almost) would be better.

 

I pulled the oil pan and 3991476 is cast into the Pistons does that tell you what they are?

 

Those are 5.7L V8 or 4.3L V6 pistons Hypereutectic, destroked .020". 3.14" dia. head recess .07" deep with 4 valve reliefs. Use 1986 & earlier rings. Not intended for race applications.

APPROXIMATE HEAD VOLUME=11.5cc

Comp. Ht. 1.540
Pin Dia..9273 Offset

Or can be 4 valve reliefs (13cc), 3.16" dia. head recess .08" deep. Use 1986 and earlier rings. Same as 1470 except packaged in sets of 6.

APPROXIMATE HEAD VOLUME=13cc

Comp. Ht. 1.540
Pin Dia..9273 Offset

So either 11.5cc or 13cc reliefs but destroked 0.020" w/1.540" compressed height.

Hope this helps.

 

Yerbasic smogger crap; frequently found in engines with those horrible old smogger heads. We call em "12cc dish".

Good for around 8.2:1 compression with 882 heads, using the most optimistic assumptions.

Pretty much, anti-performance. Relics of the low power, deeeeeeeep smogger era we'd all like to forget.