Bolt sizes for 302 - Ford Mustang Forum
 
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post #1 of 9 (permalink) Old 02-27-2010 Thread Starter
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Bolt sizes for 302

hey all.. just wondering if anyone knows what size bolt to use on the valvle covers and oil pan for a 302 ? i don't have any exsisting bolts cause i sold my old motor, and did a google search but all i get is places to buy them without listing the actual size.
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post #2 of 9 (permalink) Old 02-27-2010
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hey all.. just wondering if anyone knows what size bolt to use on the valvle covers and oil pan for a 302 ? i don't have any exsisting bolts cause i sold my old motor, and did a google search but all i get is places to buy them without listing the actual size.
I think it 1/4 coarse. 1 inch long. It maybe cheaper to go to local hardware store and get them there. They do carry them in chrome also. The price isnt bad sinch shipping isnt involved.
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post #3 of 9 (permalink) Old 02-27-2010
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They're 1/4-20, I just stuck a bolt in an old head to be sure. The length will depend on how thick your pan and valve covers are plus your gasket, aluminum ones are quite a bit thicker than steel. They aren't a high stress item so as long as you have at least 1/4" or so of engagement you should be okay.

Lots of times the fastener kits seem kind of expensive, but once you add up how much you spent at the hardware store, you end up spending more. My local hardware store charges way too much unless you buy a box of 100.

Check with summit, they have bolt kits that aren't too bad I think. Make sure to order all your other bolts you may need (like intake, water pump, etc) at the same time and it'll save you money or at least a few trips to the hardware store, plus the bolt kits usually look pretty good too.
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post #4 of 9 (permalink) Old 02-28-2010
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Hello. There should also be a couple of 5/16 bolts at each end, where the rear main and front cover seals are.
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post #5 of 9 (permalink) Old 02-28-2010
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I did the same thing but managed to keep most of the bolts. Except the oil pump. Does anyone know what sizes these are?
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post #6 of 9 (permalink) Old 02-28-2010
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I did the same thing but managed to keep most of the bolts. Except the oil pump. Does anyone know what sizes these are?
Oil pump to block are 3/8-16 x 1". Pick up to pump are 5/16-18 x 3/4". Lockwashers on both.

07 GT premium in Grabber Orange. 5spd. manual w/ a few bolt-ons.
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post #7 of 9 (permalink) Old 02-28-2010 Thread Starter
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thanks all for the help.. gonna try the local hardware store to see prices.. i'm looking to save a few bucks anywhere now that i'm already 4g's into this motor project..lol
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post #8 of 9 (permalink) Old 02-28-2010
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Oil pump to block are 3/8-16 x 1". Pick up to pump are 5/16-18 x 3/4". Lockwashers on both.
oh man you're a lifesaver. Thanks!!


I've always had good luck at getting my bolts at the local hardware store (Ace has a huge selection). I just picked up some zinc-plated grade 5 bolts for the intake and they were $.34 each for 12. Considering I don't have to pay shipping and I can get the bolts immediately I think I can swing that. Except I forgot to get the washers but thanks to jgard I'll be making another trip back anyways
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post #9 of 9 (permalink) Old 02-28-2010 Thread Starter
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well.. i picked up all the bolts and washers, ( all stainless steel grade 5 ) for the valve covers, oil pan and intake manifold for $20.. i'd say i saved money just in shipping alone, so i am happy !
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