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Old 01-16-2012, 07:50 PM
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SBF head bolts

I know the older 302s had the 7/16 bolts and the 351-Ws had 1/2 bolts but read somewhere that in the 80s both motors got the 302 7/16 head bolts,does anyone know if thats true or did they both have different sized bolts up to the end of production for those motors. I am looking for a set of E7TE heads for a mid 80s 351 I have in my 55 sunliner to replace the late 70s to early 80s smog heads and wondering if I should find a set from a 351 instead of drilling the 302 heads.

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Old 01-17-2012, 11:41 AM
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Every Windsor I've seen had 1/2" bolts.

The E7TE heads for both 302 and 351 are identical except the bolt holes. Simply run a 1/2" reamer through the holes and you're good to go.

Jim
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Old 01-18-2012, 04:43 PM
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The gains from swapping to the E7's will be so minimal it really isn't worth messing with them,if you are on a budget check out the articles on Ford Muscle.com and do some home porting on your 351 heads which are more than capable of out breathing the E7's.Or you could go this route http://www.skipwhiteperformance.com/...?Item=3038-272 which is still budget friendly and these are not all China parts, they have been upgraded to eliminate the problems you may have seen posted here on the forum.
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Old 01-18-2012, 05:13 PM
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I wish I knew what heads are on the motor now but since it came with a intake installed I could not see the casting numbers,I do know where a set of 1970 heads are but will cost some money for hardened seats and would prefer a set I could just put on and go. This motor is not a performance motor but I want low end torque.
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Old 01-18-2012, 11:36 PM
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Get the '70 heads and bolt them right on,the '69-70 351 heads were the most desirable stock heads for a 351, this will take care of the rest http://www.amazon.com/Gunk-M5012-Lea...6954750&sr=1-2 notice this is available through Ace Hardware,I've used it for years with zero problems.
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