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Author
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Topic: 302 or 289 Heads on a 351W
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67nightmare
Gearhead Posts: 118
From: rose hill, ks, usa
Registered: Mar 2004
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posted 03-27-2004 04:39 PM
   
I am planning to rebuild a 76 351W shortblock I bought with about 35k on it and I am going to re-ring it and put in all new bearings it has been bored .030 over with stock type pistons. I don't have heads for it but I have a set of 67 289 2V heads and have acess to both early and late model 302 heads. Which ones would you use? I realize the valves are smaller than 351 heads so I'll probably try to find a set that has larger valves added already and I also want to do a little port work on them and of course a valve job with guides, seats, ect. So my question is what intake manifold, distributor, pushrods, rocker arms, head gaskets, what cam do you recomend (this is going to be mostly street engine and will see its share of street races but doesnt need to run 10's or 11's), valve sizes and spark plugs. The reason I want to swap on smaller heads is because I can't see the point in buying new pistons when the ones I have are in excellent condition, so adding these smaller combustion heads will raise compression. Also this will have to clear a stock hood in a 1967 Mustang and what headers would you recomend?
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67nightmare
Gearhead Posts: 118
From: rose hill, ks, usa
Registered: Mar 2004
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posted 03-27-2004 10:18 PM
In case anybody decides they want to answer my post I also forgot to add that the pulleys on the motor are setup for an alternator, smog pump, ac compressor and power steering pump. Is there a way I can run just one belt to power the fan/water pump, alternator and crank pulley?
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capri man
Gearhead Posts: 7986
From: doerun, ga.
Registered: Nov 2000
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posted 03-28-2004 09:27 AM
i think a couple of people have "decided" to answer you where you put the same post under ford racing!!  ------------------
mike r
racing is real
everything else is just a game.
81 capri-7.33 @92mph 1/8
1.54 60 ft. http://www.angelfire.com/ny5/billswebsite/pg06.html
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SteveLaRiviere
Administrator Posts: 46598
From: Saco, Maine
Registered: May 99
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posted 03-28-2004 05:54 PM
quote:
Originally posted by 67nightmare:
In case anybody decides they want to answer my post
Yeah, sarcasm always makes me want to help someone...  ------------------
'70 Mustang Mach 1 351C 4V/FMX/3.25 Open
'70 Mustang Convertible 250 I6/3 speed/2.79 Open
'72 Mustang Sprint Hardtop 351C 4V/FMX/4.30 Trac Loc
'94 F-150 XL 5.8L/E4OD/3.55 Limited Slip
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67nightmare
Gearhead Posts: 118
From: rose hill, ks, usa
Registered: Mar 2004
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posted 03-28-2004 06:19 PM
Believe it or not that wasn't sarcasm, I'm kinda getting the feeling that nobody wants to help me with any of my questions. I know its not on account of lack of experience on anyones part I just don't know that much about stiff like this so Steve if I could persuade you or Alex to help me out with this one I'd be eternally greatful. I love the Mustang hobby and I'm just trying to keep it going.
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SteveLaRiviere
Administrator Posts: 46598
From: Saco, Maine
Registered: May 99
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posted 03-28-2004 07:07 PM
It came across that way. Remember, if people don't instantly answer your questions they may be busy with family matters, or out of town, or otherwise away for some reason. This is a free web site, and we help people as quick as we can and sometimes instant answers aren't available. It looks like the guys in the Racing forum are helping you pretty well: https://mustangsandmore.com/ubb/Forum12/HTML/007738.html ------------------
'70 Mustang Mach 1 351C 4V/FMX/3.25 Open
'70 Mustang Convertible 250 I6/3 speed/2.79 Open
'72 Mustang Sprint Hardtop 351C 4V/FMX/4.30 Trac Loc
'94 F-150 XL 5.8L/E4OD/3.55 Limited Slip
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67nightmare
Gearhead Posts: 118
From: rose hill, ks, usa
Registered: Mar 2004
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posted 03-28-2004 09:19 PM
Thank you Steve sorry for the misunderstanding.
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Hell_Fish
Gearhead Posts: 911
From: Austin, TX.
Registered: May 2002
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posted 03-29-2004 10:36 AM
The 302/289 heads will not fit on a 351W without some work. The head bolts on a 351W are larger than a 302. You would have to drill out the bolt hole in the 289/302 heads. Also, these will be less compression in stock form that a 69 casting 351 head. I think with the amount of work your planning a set of aluminum heads with higher compression(at least one point more than you are looking for) is the way to go. As for the other items. Not sure, I used the fel-pro head gaskets with no problems. The factory duraspark 2 distributor is going in my 351W along with a Performer intake.------------------
Dustin C
"The Mopar Guy!"
CRC Motorsports
56 F-100
Mech. for wifes 69 Mustang coupe
65 Plymouth Barracuda
70 Dodge Swinger
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67nightmare
Gearhead Posts: 118
From: rose hill, ks, usa
Registered: Mar 2004
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posted 03-29-2004 10:55 PM
I realize that it takes some work to adapt 302 or 280 heads to a 351W. I also appreciate how much better an aluminum head works, keep in mind I'm 16 and on a very tight budget. The smaller heads are part of my low-buck plan for a powerful motor. I'd definently go for the aluminum heads if I could afford it. But I dont think you are correct with the statement about losing compression, I'd have to gain it going from the Windsor heads I have (vintage 1976) have between 67.5-70cc chambers where as the 302 has 61.7-64.7cc chambers and the 289 has 52-55cc chambers. I have to assume that, and I think some of the veterans here will back me up, they will make more compression. I think to make any really big compression gains I'd have to go to a milled 289 head though. I'm just looking to use the pistons I have and make between 9:1 and 10:1. I think thats an achievable goal right? Am I stupid in doing this?
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SteveLaRiviere
Administrator Posts: 46598
From: Saco, Maine
Registered: May 99
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posted 03-30-2004 07:52 AM
No, your reasoning is sound, keep a close eye on chamber size and you'll be fine.One thing you should think about though, is any used head you will use will cost almost about the same to prep, if you do it right, than a set of new, more efficient, set of modern heads. But the difference in performance is dramatic. These days about the only thing I'd use older heads is a cheapie rebuild or original restoration. Food for thought. ------------------
'70 Mustang Mach 1 351C 4V/FMX/3.25 Open
'70 Mustang Convertible 250 I6/3 speed/2.79 Open
'72 Mustang Sprint Hardtop 351C 4V/FMX/4.30 Trac Loc
'94 F-150 XL 5.8L/E4OD/3.55 Limited Slip
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mustangs68
Moderator Posts: 25842
From: Buckroe Beach Va MCA#39406 M&M #12 Member Mustang Club of Tidewater
Registered: May 99
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posted 03-30-2004 10:38 AM
More food in '99 when we rebuilt our 289 the cost to do all the machine work,parts and labor was more than a set of new assembled Windsor Jrs Heads.
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Hell_Fish
Gearhead Posts: 911
From: Austin, TX.
Registered: May 2002
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posted 03-30-2004 03:18 PM
Early Windsor heads were 56-59cc. Here is the time to start getting prices from local shops. A set of heads with a stock rebuild can cost you $300 plus shaving the block side if needed to raise more compression, then intake side so the intake fits, plus larger valves machined and added, plus inlarging bolt hole(You could do those yourself.Compair those prices with a new set of aluminum heads that could get you to 11 to 1 compression. Just check everything out before jumping in. ------------------
Dustin C
"The Mopar Guy!"
CRC Motorsports
56 F-100
Mech. for wifes 69 Mustang coupe
65 Plymouth Barracuda
70 Dodge Swinger
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