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-   -   '76 302 Bronco engine questions (http://forums.mustangworks.com/showthread.php?t=36137)

QuantumMotorsports 05-04-2003 12:53 PM

'76 302 Bronco engine questions
 
Can anyone tell me anything about what a '76 Bronco 302 engine would have as far as lifter type and head ports and valve sizes? I could get a 302 out of a 76 bronco for a really nice price and am thinking of tearing it down and putting a new cam and intake on it, possibly heads. I have a set of E6 heads that I could grind the emissions bumps off of and have a valve job done on them. I was thinking if I could get a 4 barrell intake and carb and a cam that it might be a cheap motor that would run okay. What kind of cam and lifters are in that motor? hydraulic flat tappet probably? I could do a roller conversion on it and run a motorsport cam I guess. What do you guys think. Keep in mind I'm wanting to keep cost down by probably using either the 76 heads or the E6 heads I have. I don't mind getting out a die grinder and going after the heads. Which one would have bigger valves? Anyone know? Let me know what you guys think.

84LX89GT 05-05-2003 12:32 AM

What i know about the '76 bronco 302 is that it has cast pistons, hydraulic flat-tappet lifters, and the standard heads used on all late 70's vehicles with 1.78 intake and 1.46 exhaust valves, which is the same as the E6 heads or E7 heads for that matter. The '76 heads themselves are poor, but are better than the '86's high swirl heads. If you have to choose between the two, i'd go with the '76's heads. As far as the block goes, it has a two piece rear main seal (likes to leak/blowout) but has a fairly thick casting compared to the thin-cast 80's blocks.
What vehicle are you putting this in?


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