351 heads on 302 block?

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09-21-2006, 05:33 PM

giddyup91

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351 heads on 302 block?

I have a 91 GT w/ an 8psi blower and have stock heads. A friend of mine said that the heads off of a 351 will fit on to a 302 block. Is that true? I know a chevy 350 and 305 will work that way.

09-21-2006, 05:33 PM

PX429

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RE: 351 heads on 302 block?

yeah but you need special inserts for the head bolts

09-21-2006, 05:38 PM

giddyup91

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RE: 351 heads on 302 block?

Will any year head work?

09-21-2006, 05:41 PM

89Ford

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RE: 351 heads on 302 block?

should be 351w heads, and you will need either insert or bolts with a shoulder forgot what size...

09-21-2006, 05:43 PM

89Ford

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RE: 351 heads on 302 block?

as for year go with I think its 94 and up

09-21-2006, 05:51 PM

89Ford

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RE: 351 heads on 302 block?

http://www.fordmuscle.com/archives/1...P/index4.shtml this might useful

09-21-2006, 06:05 PM

giddyup91

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RE: 351 heads on 302 block?

And if I replace my 302 heads with 351 heads should I see a huge difference in power. I have heard there is really no difference between the heads.

09-21-2006, 06:12 PM

5IVE.OH

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RE: 351 heads on 302 block?

302 7/16 BOLT. 351 3/8 BOLT. Larger chambers on 351 heads = loss of HP on a 302. Unless you get 68or 69 351 heads.

09-21-2006, 06:42 PM

89Ford

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RE: 351 heads on 302 block?

instead of getting 351 heads look for gt40 heads they flow better from what ive heard, look for them on explores

09-21-2006, 07:04 PM

#10

rmodel65

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RE: 351 heads on 302 block?

only heads u would wantr off a 351 will be heads from 1969-1970 casting nuber begins with c9 or do but a set of gt40 heads will flow more off of an explorer and u wont need the washers to use them