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bust out the book then
3970010 68-79 350 and 327 145-375hp 2 and 4Bolt mains in hi po verisons and trucks
the heads arent my book actually nothing even similar are you sure they are the rite numbers
heres what i did fidn though
J302 was the part number that Ford assigned to "AR" heads manufactured
by Alan Root. They were developed for Root by Ken Duttweiler and were
the first of the modern Windsor-based aftermarket aluminum heads. They
were quite expensive when first introduced because they had no competition.
I had a set many moon ago. The chambers were 58 cc's and they nominally
used 1.94"/1.6" Chevy valves. The assembled SVO J302's came with 2.02"
intakes. There was no provision for exhaust heat or EGR. 170 cc's intake
port volume, 60 cc's exhaust. Dual exhaust header bolt patterns for headers
up to 1 3/4". Raised valve cover rail for roller rocker clearance. Machined
for screw-in studs (some of the studs go into the water jacket) and guide
plates. Solid bronze guides, grooved for oil seal retention. The intake
ports measured 1 1/4" wide by 2 1/16" tall. The exhaust ports measure
1 7/16" wide by 1 5/16 tall and proved too wide for my Motorsport 1 5/8"
stainless steel shorty headers. Ford and other manufacturers had specific
headers for the J302's. The "AR" specific bolt pattern has the bolts offset,
and was adopted by a lot of head porters who did serious exhaust work on later
heads. Fel Pro carries a header gasket for the J302's. It's p/n 1486 for
J302 & K302 (Dual bolt pattern, stock Ford and inline spread bolt Dart & TFS)
Port Size: 1.40" x 1.40".
any way you could post some pictures of the the heads and the casting numbers
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