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Topic: 351 heads on 302 (Read 1724 times) previous topic - next topic

351 heads on 302

I have an 88' cougar that has a 5.0 HO and I am taking the engine out and putting it in a 93' cougar and I was wondering if I put 351W heads on it what else will be REQUIRED for me to do in order for it to work correctly?

I already know that I need to get conversion head bolts.  But what about the cam and intake are those changes that are required?

351 heads on 302

Reply #1 –
What year are the heads ?
Fox-less at the moment

351 heads on 302

Reply #2 –
I haven't got the heads yet but I am looking at a set from a 94'

351 heads on 302

Reply #3 –
The 93 already has an H.O. and e7te heads if that is what your getting at. You can buy bushings or what ever to step down from 1/2" to 7/16"s, but you really do not need them. Other then that, they should more or less just bolt on, unless your heads or intake or block have been milled down.
Quote from: jcassity
I honestly dont think you could exceed the cost of a new car buy installing new *stock* parts everywhere in your coug our tbird. Its just plain impossible. You could revamp the entire drivetrain/engine/suspenstion and still come out ahead.
Hooligans! 
1988 Crown Vic wagon. 120K California car. Wifes grocery getter. (junked)
1987 Ford Thunderbird LX. 5.0. s.o., sn-95 t-5 and an f-150 clutch. Driven daily and going strong.
1986 cougar.
lilsammywasapunkrocker@yahoo.com

351 heads on 302

Reply #4 –
Quote from: goinsa337;325864
I have an 88' cougar that has a 5.0 HO and I am taking the engine out and putting it in a 93' cougar and I was wondering if I put 351W heads on it what else will be REQUIRED for me to do in order for it to work correctly?

I already know that I need to get conversion head bolts.  But what about the cam and intake are those changes that are required?

If the engine is an HO, then why are you putting the '94 heads on it?

The only difference is the 5.8 heads have the 1/2" holes, vs. the 7/16" as mentioned. Both sets are E7TE castings, identical.

Utter waste of time, unless the 5.0 heads are bad, or the '94 heads have been worked over, valve job, rebuilt, or what have you.
'98 Explorer 5.0
'20 Malibu (I know, Chevy, but, 35MPG. Let's go brandon, eh)

351 heads on 302

Reply #5 –
Truck 5.0 and 5.8 heads are the same as the 5.0 HO heads, the E7TE. The E7 heads are all the same no matter if they were on a 5.0 or 5.8. If you really want a decent stock head you should pick up a pair of GT40 or GT40P heads from a 5.0 Explorer.
88 Thunderbird LX: 306, Edelbrock Performer heads, Comp 266HR cam, Edelbrock Performer RPM intake, bunch of other stuff.

351 heads on 302

Reply #6 –
Quote from: ThunderbirdSport302;325874
The only difference is the 5.8 heads have the 1/2" holes, vs. the 7/16" as mentioned. Both sets are E7TE castings, identical.


Quote from: thunderjet302;325897
Truck 5.0 and 5.8 heads are the same as the  5.0 HO heads, the E7TE. The E7 heads are all the same no matter if they  were on a 5.0 or 5.8. If you really want a decent stock head you should  pick up a pair of GT40 or GT40P heads from a 5.0 Explorer.

Redundancy?
Check. :rollin:
'98 Explorer 5.0
'20 Malibu (I know, Chevy, but, 35MPG. Let's go brandon, eh)

351 heads on 302

Reply #7 –
Quote from: ThunderbirdSport302;325901
Redundancy?
Check. :rollin:


I should read previous posts:hick:
88 Thunderbird LX: 306, Edelbrock Performer heads, Comp 266HR cam, Edelbrock Performer RPM intake, bunch of other stuff.