351w heads?

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Aug 13, 2003 | 05:36 PM

iggy1982

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Joined: Mar 2003

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From: cordova, tn(near memphis)

351w heads?

has anyone put 351w heads on their 1994 or newer 302 truck eng? & if so what were the gains(ie hp or torque), also what did you need to reinstal the 302 intake manifold?

Aug 13, 2003 | 09:54 PM

jwtaylor

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351w heads?

The 351 heads bolt down and everything bolts up to them (302 lower intake included) nothing to worry about. However, the (ballpark figure) early to mid 80+ 351 heads are a 302 design so why even use them? You will have to use a step stud to install them the 351 use a larger bolt. If you use a head too far back then you may have some emissions issues as far as hooking them up. If you just want a cheap upgrade many will tell you to bolt on some iron gt-40 or gt-40p heads other than header issues with the "p" design they bolt right down, if you get the regular gt-40 get them off a 302 and they will bolt right down some came on 5.8351 lightnings so they would use a larger bolt. I believe the general rule is this will gain you 20-30hp/tq. Maybe this helps some, good luck

Last edited by jwtaylor; Aug 13, 2003 at 09:58 PM.