please tell me about 69 351W D00E heads??

iwannarace67 · Sep 9, 2004

So I have a friend trying to sell me some 69 351W D00E casting (?) heads. He seems to think they'll bolt on to my stock short block and says they're worth a good 40 - 50HP due to smaller combustion chambers. I don't think he's BSing me but before I think about buying (appaerntly I'm getting a good price) I was just curious if anyone here had any opinons about them or anything?

bluevenom867 · Sep 9, 2004

I think that they have bigger combustion chambers.I have the same heads and thet look larger than stock, aorund 64cc compared to 58cc for stock.But the runners are much bigger and flow consideralby more air and exhaust.They also have pressed in studs so you'll need different rockers.

408stroker5.0 · Sep 9, 2004

D00E Specs:

60cc Chambers
1.84" Intake Valves
1.54" Exhaust Valves
Port Size: 1.94"x1.76" Intake
1.24"x1.00" Exhaust

The 69' Head's are definetly a good head especially if your thinking of throwing them on a mild 302. Bigger Valve's & Port's are one advantage & depending on the year of your 302 the combustion chamber will be smaller as well resulting in increased compression. They will bolt on to a 302 with the use of head bolt/stud bushing's. Insure and check piston to valve clearence as well.
If you cant afford aluminum head's, they are worth the money (Depending On What Kind Of Shape There In) if your getting a good price and yes upward's of a 35-40+HP gain souldn't be a problem.

Shon

MercRS · Sep 10, 2004

Do0E should be 1970
do they say it on the heads
I thought that was only Big Block Casting #

408stroker5.0 · Sep 10, 2004

No...D00E is a small block head.

That's quite the collection of Mercs. you got there MercRS!

giddyup306 · Sep 10, 2004

I hear you can get 230+ CFM on the intake side with porting.

iwannarace67 · Sep 12, 2004

So they wouldn't be a bad investment?

Blk91stang · Sep 12, 2004

They are not the best heads but are better than E7's! A possible 15hp gain from more compression but they still flow like crap. If I were you... I wouldnt even waste my money and time pulling apart the motor to throw stock heads back on it again... Call up Powerheads.com and get a set of their ported heads for $700 if ur on a budget.. Thats just me though..

iwannarace67 · Sep 12, 2004

15hp? That's seems a like a lil bit of low estimate....

WantaGT · Sep 12, 2004

what about a cheap set with bigger valves, what kind of gains could you see with those? sorry if i seem like i'm hijacking...

Blk91stang · Sep 13, 2004

iwannarace67 said:
15hp? That's seems a like a lil bit of low estimate....

Matters how much the heads are shaved but I'd say if they add 1/2-1 point of compression, 15-20 rwhp across the board is a safe guess... still not worth throwing stock heads back on imo. Maybe get someone to clean them up a little bit that knows what their doing. Than I'd say its a worthwhile modification!

nito88stang · Sep 13, 2004

not worth the price of a gasket set, new coolant, oil change (if premature), gasket sealant and possibly new head bolts. Save up instead.

iwannarace67 · Sep 14, 2004

ok a lil more info on the heads...they've been ported (intake and exhaust), a little bowl work done and have been decked roughly .010 and 2.02/1.94 (exhaust valve size may of been smaller couldn't remember exactly what he said)valves. Port work can be described as mild, I can tell they've been opened up a bit but not too much. Quality of port work looks good too..might be professional. So to restate the question, what kinda HP gain with the DO0Es ported and decked with a lil bowl work and larger valves?

BTW the casting # on the heads was D80E not DO0E...differant?

90NotchBack · Sep 14, 2004

I think they are pretty good. My dads 79 capri with 356W. With those heads went 11.59@118.

5.0fox · Jan 12, 2006

i run them and they seamed to make quite a bit of difference. but im runnin 1.96/1.60's with the exhaust fully ported and intake side gasket matched so i dunno what a stock set would do.

88Stangboy · Jan 12, 2006

ive got a set of 71' 302 heads and they flow like hell, intake and exhaust have both been ported, bowl, runners, etc. And bigger valves installed, 2.02 intake and 1.60 exhaust. So they're definatly worth the while, i'd grab them and stick em' on and go, but you are going to need different rockers if they don't have screw in studs. If you have stock heads on your car right now, you will DEFINATLY feel the difference.

FordMuscle · Jan 13, 2006

15hp is about right bolting on a set of stock 351W heads in place of E7's. Best flow we obtained porting a 351W head was 192/177cfm at .500, E7's flow 155cfm/106cfm int/exh at .500.

more here: http://www.fordmuscle.com/archives/2000/05/heads/index.php

86bluecobra · Jan 13, 2006

if you get them you will feel the power difference in the seat of your pants. i hope you have another mustang other then your 2001 you plan on putting them on. of course you do.

Mavrick · Jan 13, 2006

iwannarace67 said:
BTW the casting # on the heads was D80E not DO0E...differant?

Yes, much different. D8OE's were used on Mustangs from 79-84 or something.. they are WORSE than stock E7's.

I'm not sure if there are 351w version of these heads, but i'm sure they would suck also.

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