Heads from a 85 351w on my 302

onebad7up

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Jun 21, 2004

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Jul 30, 2006

#1

• Jul 30, 2006

• #1

My neighbor is trying to sell me his 351w heads because he wants to buy some aftermarket ones. Would these work on my 90 efi 302? I would get them if I new I could just bolt them up, but I dont want to get them if it going to involve a lot of work. Would these flow better than my stock heads?

 

onebad7up

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Jun 21, 2004

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Jul 30, 2006

#2

• Jul 30, 2006

• #2

He also has some 1969 windsor heads with 190/160 valves. Which one would be the better/ easier to install on my car. I need to pass emissions as well. Thanks

 

87Mustang351

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Sep 12, 2005

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Canada, Nova scotia, Cape Breton

Jul 30, 2006

#3

• Jul 30, 2006

• #3

the 69 heads are better im pretty sure my man

 

onebad7up

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Jun 21, 2004

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Jul 30, 2006

#4

• Jul 30, 2006

• #4

Will they be okay with the EFI?

 

R

R2D2

Jul 30, 2006

#5

• Jul 30, 2006

• #5

use the 69's, the others are junk. The heads dont know what intake is on the motor, efi or carb. With either 351 head you need to buy stepped head bolts to make up the 7/16th deck holes and the 351 1/2inch head bolt holes

 

K

Kaoz78

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Jun 8, 2006

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Jul 30, 2006

#6

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Do you have to pass a visual emissions test?

 

whtpny

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Dec 8, 2002

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Spokane WA.

Jul 30, 2006

#7

• Jul 30, 2006

• #7

Have the 69s cleaned up a bit and use them. I might check to see the port size so you will know the compression you will end up with too.

 

RMODEL65

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Jul 6, 2005

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brunswick ga

Jul 30, 2006

#8

• Jul 30, 2006

• #8

the 85 heads are the same thing as ur stockers they are just e7's for the 69 heads the casting number should start with C9 and for 70 heads D0

 

onebad7up

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Jun 21, 2004

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Nashville

Jul 31, 2006

#9

• Jul 31, 2006

• #9

So those 351w heads are e7's? I do not need to go through the trouble of putting them on then because my e7's are still good. Do they flow better?

I do have to pass emissions but they do not check in my engine compartment.

 

LEE93COBRA

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Apr 12, 2000

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Jul 31, 2006

#10

• Jul 31, 2006

• #10

Any year 351 heads should NOT be the same as E7's.

I would go for the 69 heads since they have 1.90 valves though

 

S

seijirou

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Aug 15, 2002

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Jul 31, 2006

#11

• Jul 31, 2006

• #11

LEE93COBRA said:

Any year 351 heads should NOT be the same as E7's.

I would go for the 69 heads since they have 1.90 valves though

Click to expand...

I just pulled a 351 out of a 93 van last week and it had E7's

 

onebad7up

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Jun 21, 2004

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Jul 31, 2006

#12

• Jul 31, 2006

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So I guess I shouldnt bother since 302 and 351 heads are the same. Right?

 

S

seijirou

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Jul 31, 2006

#13

• Jul 31, 2006

• #13

onebad7up said:

So I guess I shouldnt bother since 302 and 351 heads are the same. Right?

Click to expand...

The 69 heads will be better than your stock ones you have on you Mustang now. So if you can have them at a good price, I say go ahead and get them.

The 85 heads may not do you any favors. They're not E7's as E7 literally means They were first used on something in 1987. E7TE means "1987 Truck Engine".

However, Just because they're not E7's doesn't mean they're really any better than E7's. With a 351 I really don't know. I can say that on the Mustang, the 1985 head and the 1987 head were technically different but pretty much the same.
Maybe if you can get the part #'s off each pair of heads and post them, someone will be able to better tell you what you've got.

 

R

R2D2

Jul 31, 2006

#14

• Jul 31, 2006

• #14

remember the 351 was never intended for anything more than vans, dump trucks , buses etc. The 351 heads are junk, the only 351 head semi worthy of use is the C9-D0

 

Dark Knight

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Chandler, Az.

Jul 31, 2006

#15

• Jul 31, 2006

• #15

The late model 351 heads are the same as what you have. The early ones will flow better with bigger ports and valves, but you'll need pushrods, rockers etc or the rockers from the early heads. Not sure on pushrod length. The early heads use a non adjustable rail type rocker arm, instead of the pedestal mount you have now.

 

onebad7up

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Jun 21, 2004

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Aug 1, 2006

#16

• Aug 1, 2006

• #16

The guy with the 69 heads wants 350, but he said they need to be checked because the valves touched the cylinders. I dont think I am going to bother. That could have damaged everything.

 

onefaststang

Kingpin

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Jan 1, 1999

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Elmira NY

Aug 1, 2006

#17

• Aug 1, 2006

• #17

the 69 heads also do not have provisions for emmisions.

 

ninety15.0

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Mar 10, 2004

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Aug 1, 2006

#18

• Aug 1, 2006

• #18

onebad7up said:

The guy with the 69 heads wants 350, but he said they need to be checked because the valves touched the cylinders. I dont think I am going to bother. That could have damaged everything.

Click to expand...

350 is way too much money for 1969 351w heads that have valves that "MAY" have touched the pistons?! You could pick up a set of gt40p's for cheaper than that and make more power with all the emissions provisions and no rocker problems. IMHO dont bother.