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Technical => Engine Tech => Topic started by: quicksilver on September 10, 2006, 01:01:54 AM

Title: D8OE head?
Post by: quicksilver on September 10, 2006, 01:01:54 AM
well, i found a nice pair on ebay. the have 1.78 intake valves and 1.48 stainless valves. does anybody know anything about these heads?
Title: D8OE head?
Post by: SLEEPER T-BIRD 87 on September 10, 2006, 01:04:27 AM
there very similar to the e7 head.

I have a set with exhaust side porting and they ran well on a mild 302.
Title: D8OE head?
Post by: quicksilver on September 10, 2006, 01:15:21 AM
so they are a pretty good buy then? i noticed that they have a little big valves. but im going to port both the exhaust and intake sides. so im hoping on making decent power until i can afford twisted wedge heads.
Title: D8OE head?
Post by: quicksilver on September 10, 2006, 01:15:31 AM
o and thank you for your help
Title: D8OE head?
Post by: 4mykid on September 10, 2006, 01:29:05 AM
There are better heads out there for sure, I'm not exactly sure what you meant about having a little big valves but that is the stock valve size on all ford 302 heads from the time they were produced through to the E7s. The have very large combustion chambers which = low compression. I believe they are 69cc, early 70's heads had average of  60cc and i am sure that the E7 heads have 64cc. You would be much better off with E7's being as though they are cheap and plentiful. The D8OE heads you are refering to were made during the fuel crunch and for the lowest powered 302 engines ever in the mid/late 70's. IMO:nono:
Title: D8OE head?
Post by: SLEEPER T-BIRD 87 on September 10, 2006, 01:37:14 AM
Quote from: 4mykid;103271
There are better heads out there for sure, I'm not exactly sure what you meant about having a little big valves but that is the stock valve size on all ford 302 heads from the time they were produced through to the E7s. The have very large combustion chambers which = low compression. I believe they are 69cc, early 70's heads had average of  60cc and i am sure that the E7 heads have 64cc. You would be much better off with E7's being as though they are cheap and plentiful. The D8OE heads you are refering to were made during the fuel crunch and for the lowest powered 302 engines ever in the mid/late 70's. IMO:nono:


Have you had a set? set them beside some e7's and have a look
Title: D8OE head?
Post by: SLEEPER T-BIRD 87 on September 10, 2006, 01:44:16 AM
Quote from: quicksilver;103267
so they are a pretty good buy then? i noticed that they have a little big valves. but im going to port both the exhaust and intake sides. so im hoping on making decent power until i can afford twisted wedge heads.



There a decent low budget head.There not going to make insane power but are a good stepping stone they will accept all the late model valvetrain and the thermeractor hook ups.

other heads to look for

1969-71 351w heads

69-71 302 4v heads

65-66 289 hi po
Title: D8OE head?
Post by: 4mykid on September 10, 2006, 01:52:51 AM
Yes i have HAD a set and do have some E7s and I also have a book that gives specs on them...measure out the combustion chambers and then tell me they are the same. As well as talk to any body that knows anything about heads ie a performance machine shop and get their opinion if you dont believe me. I believe compression with those heads is around 8 to 1. Its the low compression that makes them poopy for power.
Title: D8OE head?
Post by: SLEEPER T-BIRD 87 on September 10, 2006, 02:03:03 AM
Quote from: 4mykid;103277
Yes i have HAD a set and do have some E7s and I also have a book that gives specs on them...measure out the combustion chambers and then tell me they are the same. As well as talk to any body that knows anything about heads ie a performance machine shop and get their opinion if you dont believe me. I believe compression with those heads is around 8 to 1. Its the low compression that makes them poopy for power.



All i can say mine made good power and ran strong on the street with the d8oe heads.

Didnt want a debate over them or do i feel like arquing.
Title: D8OE head?
Post by: quicksilver on September 10, 2006, 02:04:30 AM
150030438813  ebay.
 
will these baby's work?
Title: D8OE head?
Post by: 4mykid on September 10, 2006, 02:07:59 AM
As I was also just giving him the facts he was looking for and my personal opinion. Just trying to tell him for the same money he would likely spend on D8s he could do a little better with E7 heads for the same money. Nor was i looking to argue!
Title: D8OE head?
Post by: SLEEPER T-BIRD 87 on September 10, 2006, 02:09:01 AM
Quote from: quicksilver;103268
o and thank you for your help



n/p man Im going to suggest you call this man and talk to him about the d8oe heads he owns a large respected mustang/head/intake porting shop near atlanta he can probly give you flow numbers on a stock set along with the actual cc of the chambers.

678-409-4685 Coupe performance.
Title: D8OE head?
Post by: 4mykid on September 10, 2006, 02:11:29 AM
Unless they have been milled I assure you they are 69cc.
Title: D8OE head?
Post by: SLEEPER T-BIRD 87 on September 10, 2006, 02:11:42 AM
Quote from: quicksilver;103280
150030438813  ebay.
 
will these baby's work?



seems a little high for a set that needs reworked.
Title: D8OE head?
Post by: V8Demon on September 10, 2006, 12:45:22 PM
Late '70's and early '80's heads for the most part were lower compression than their counterparts from the early '70's and late '80's and '90's.  There just wasn't enough research back then to get a low emission rating AND have good power.  Heck, new innovations are being made even now (anybody been paying attention to what's been going on with diesel motors?). 

Those 351 heads are worth that much to someone restoring a car to origianl condition.  I didn't notice...Are they assembled with parts to run leaded or unleaded fuel?  That would be another concern if they are going on an emission vehicle.
Title: D8OE head?
Post by: TurboCoupe50 on September 10, 2006, 08:12:26 PM
Quote from: SLEEPER T-BIRD 87;103274
There a decent low budget head.There not going to make insane power but are a good stepping stone they will accept all the late model valvetrain and the thermeractor hook ups.

other heads to look for

1969-71 351w heads

69-71 302 4v heads

65-66 289 hi po

Unless you count the Boss 302 there is no such thing as a '69-'71 4v 302 head...

4v 302s were produced in '68 ONLY... In '69 the 351 became the smallest engine availble with a 4bbl carb(other than the afore mentioned Boss, which was a mid '69 entry)...
Title: D8OE head?
Post by: quicksilver on September 10, 2006, 08:14:14 PM
180025306810 ebay
what about these?
Title: D8OE head?
Post by: SLEEPER T-BIRD 87 on September 10, 2006, 09:24:31 PM
Quote from: TurboCoupe50;103401
Unless you count the Boss 302 there is no such thing as a '69-'71 4v 302 head...

4v 302s were produced in '68 ONLY... In '69 the 351 became the smallest engine availble with a 4bbl carb(other than the afore mentioned Boss, which was a mid '69 entry)...


made a typo:pbb:
Title: D8OE head?
Post by: quicksilver on September 10, 2006, 11:18:55 PM
180025306810 
  270027504130 ebay
will these work?
Title: D8OE head?
Post by: Bane on September 11, 2006, 12:21:59 PM
why not just take the money you are going to blow on a set of heads now and put it towards getting the twisted wedge heads you want? I dont see the reasoning to buying and swapping 2 sets of heads when you dont have to.
Title: D8OE head?
Post by: quicksilver on September 11, 2006, 11:00:12 PM
haha well, it would take me awhile to get that money up because i dont work right now because of school and football. and i want to go to the high school drags. so i just want something i can go to the drags with. i'll probably buy twisted wedge next year. but i also want a good intake manifold this year too. so i went with E7 heads, and a good intake manifold (havent found one yet)
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