I have a 302 in my 1984 F-150 but a co-worker of mine is offering me a great deal on his 351 Cleveland out his 1969 Mustang but I have been told that I will have to do some modifications to my brackets. Does anyone know if there is a great deal of modification of just a little bit here and there? Or what about if I just put the Cleveland heads on my 302? I know I will have to buy another manifold to fit it but will that cut down my modification? I appreciate any feedback and just let me know what you would do if you were in my place.

The 302 is fine but I would like some more *** out of my truck.

 

in that case I'd leave the 302 in your truck and look for some performance parts for it the cleveland is a great motor..... in a car.

 

what year are the heads on the cleveland? also, are they the 2v or 4v heads?

I dont know about the brackets, but march sells I dont know about the pully brackets, but march lists the same kit for the windsor blocks as it does the clevelands.

Putting cleveland heads on a windsor (clevor)
here are some links

www.powerheads.com/351c.html
http://www.pricemotorsport.com/index.html
http://www.themustangshop.com/clevor.cfm

Personally I would build up the 302, rebuild kits are inexpensive, and there are tons to choose from.

 

I believe they are 4v heads as for as what year I am not sure. Those links were great and this is probably a stupid question but the instructions for the Clevor are the same as intalling the Cleveland heads on a regular 302 block? I know the 351w and the 302 are basically the same thing but I am just wondering the the drilling modifications would be the same. Furhtermore you think a machine shop would have those diagrams to make the heads work or do you think I would have to supply specific diagrams for proper drilling? I really just want the heads and after reading the Clevor link I am 90% sure all I want is the heads. Thanks for those links if you have any morejust throw them my way because all that information was very useful. Any more information is much appreciated. Thanks.

 

now days you can buy sbf heads aftermarket that are made to go on the 351 or 302 and then you will not need a special intake or an intake adaptor so you would not be limited in that respect. plus if you have that big of valves and that large of intake and exhaust runners on a small block they're really designed to work best at higher rpm's that's why I say they're great in a car. truck motor's like to operate at lower rpm's you should be looking for stuff that flows best in the 1,000-4,000 rpm range. I had the same issue's with a 72 chevy I had a 327 motor out of a 69 corvette I installed a steel crank h beam rods flat top pistons kept the heads about the same they were double hump heads with a 2.02 intake valve and did some minor porting and polishing on the intake and exhaust. this motor once I got out on the highway or ran around town from about 1500 rpm on was fairly good it would move the truck pretty well. but when I tried to pull a trailor it wouldn't do squat until you were out on the highway. and it was hard to get up to those speeds. so basically if you're planning on using this for much work at all that motor probly won't cut it. if you're just wanting a play toy great go for it. but even still I'd go the cheaper route that you know you can get parts for in the middle of nowhere. sell the cleveland and build yourself a windsor motor. but that's just my humble opinion whatever you do I'm sure you'll learn plenty and have fun doing it

 

From what I have read on the subject, Clevors are not worth the expense.

considering you can buy aftermarket heads that flow better out of the box.

I guess they used to be worth it, but the aftermarket for the windsor blocks finally caught up.

I would assume that the modifications on a 302 are the same as a 351w. they use the same heads.

 

I originally was looking at some Trick Flow heads but they are kind of expensive and my co-worker offered me his 351c for half the price. That is why I considered installing the Cleveland heads. What brand of aftermarket head do you recommend?

 

you are absolutely right the mod's would be the same for the 302 as the 351 but the intake adapter for a 302 will not work with the cleaveland heads on the 351 because of the different deck height. so you would have to find an intake or intake spacer specifically for a 351 with cleaveland heads.
oh and I forgot to mention one other thing about the cleaveland heads in an 80's truck do you know if exhaust would work I'm sure like mustang manifolds might work but good luck getting headers

 

The exhaust would probably work with shorties. but you would have to have the pipes modified to fit.

The reason I asked what year the heads were is because there are actually crappy heads for clevelands.

the open chamber heads have Huge combustion chambers, that even with flat tops will only run at most 9:1 compression.

Personally, I feel that clevelands are way over priced for what they produce.

I have seen several "runners" for sale locally for $600. which I feel is outragious. considering you could buy a 302 core, and rebuild it for that price, machine work and all.

as for head recomendations. If you want cheap, then go with some Iron GT40's or some roush heads.

heck, even a pair of E7's would probably be cheap.

The thing about building a clevor is that after you buy the motor, then machining, then buying the intake...

you will probably reach the cost of buying a set of better heads for the 302.

just some FYI, I am running a 351C in my 73 mach 1. It has the later open chamber 2v heads on it.
soon, I am hoping to get ahold of some aussie 2v quench heads. They usually go for around $275 (needing a rebuild).

that will usually bump the compression up to around 10:1 to 11:1 depending on piston.

The 1970 blocks is supposedly the more desired 351c block, it has a higher nickel content than the later ones.

I have two blocks, one came with the car and the other I bought off of ebay for eleven bucks.

The bad thing about clevelands is that they cannot be punched out as far. I have heard that .040 is the highest that one should be bored over.

 

I completely agree with hungrymonkey

 

Geez, nobody has said that before

 

Hey thanks for all the information because I did not even think about the headers because I currently have headers on my truck and I would like to go back over with headers instead of manifolds and with both your feedbacks, stangboy and hungry monkey, I have decided to forgo purchasing the 351c. Stangboy thanks for breaking down the reasons why the 351c would not be a good idea for my truck and hungrymonkey thanks for all the info on the heads. I have been recommended the GT-40 heads so I'm going to shop around and see what I can come up with. I appreciate both you guys' help and if you have any other suggestions please throw them my way because I'm all ears. By the way where can I buy some of those heads you are talking about?

 

summit had the roush heads, they are kind of spendy for iron heads.

But I am pretty sure you can get GT40's from early 90's explorers.

 

you'll have to be careful with explorer heads, I could be wrong about this, I believe they have gt40p heads which use a different exhaust port then all the other windsor's. otherwise I think you can get gt40's from summit ebay? if not then summit is always good

 

yeah, I think you need special headers to run them.