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post #1 of 5 (permalink) Old 04-19-09, 03:49 PM Thread Starter
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302 boss

hey guys

i have a 302 engine and some ppl say it's a boss so my question is how in the name of god do i know for sure without stripping it down?lol

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post #2 of 5 (permalink) Old 06-13-09, 09:12 AM
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Re: 302 boss

a boss 302- uses the same heads as a 351-c there are 8- bolts holding down the valve covers on each side , and the water outlet that goes to the rad comes out of the block
in front of the dist. a rare egine only made in mustangs in 1969 & 1970 than ,that gave birth to the 351-c , a 351-c looks like a boss 302 but taller it has 1/2 inch more stroke and they were in cars from 70 -74
a normal 302 has 6- bolts holding down the valve covers on each side, and the water neck to the radiator comes out of the intake manifold, they were in cars from 68-95
find a casting no. on block or manifold to b sure
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post #3 of 5 (permalink) Old 06-13-09, 09:17 AM
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Re: 302 boss

a boss 302 is 4-bbl only, a 351-c is 2 or4 bbl, a boss 351-c is 4bbl only,
a 351/400m is 2-bbl only made from 74-79 mid /full size cars &trucks
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post #4 of 5 (permalink) Old 01-28-10, 01:55 AM
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Re: 302 boss

Even though this is an older posting, I thought I'd add to what Keith said already.
Another item unique to the Boss engine (at least in 302 trim) is that it uses heavy, screw-in freeze plugs. Instead of the typical press-in type we're used to seeing on most other engines.
And you'll find the 400 in cars from the '70/'71 model year and the 351M all the way up to at least '81 in the trucks.

Paul
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post #5 of 5 (permalink) Old 02-15-10, 12:28 PM
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Re: 302 boss

The thermostat was mounted in the intake manifold on the Boss 302 like all other Windsor engines.
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