Visit The Dirt Forum for More Information

Author Topic:   Ford 351 Clevor
powercar821111
Member
posted February 24, 2002 11:06 PM
Does anybody out there run the 351 Clevor? I was looking at the heads availiable from Midwest Motorsports and wondering some things about them like chamber cc. Also, do you like the way that they run, about how much horsepower, torque are you getting out of them? Thanks a lot!!


Tom Asmus
Member
posted February 25, 2002 07:22 PM
We have the pieces to put one together, But a guy where we run just didnt have good luck with a clevor. A good windsor with a set of world products heads or 351 n motorsport heads will run circles around a clevor.


powercar821111
Member
posted February 25, 2002 07:42 PM
As I stated in other forums, I have to run production heads (No SVO stampings) this is basically my best option. I was going to go with the gt40p's but decided that the extra effort to put one of these together would be worth it.


Tom Asmus
Member
posted February 25, 2002 10:52 PM
Your gonna put out just as much effort if not more with cleveland heads. Go with easy and reliable.


CUSTOMPERFORMANCE
Member
posted February 26, 2002 09:21 AM
the time and expense of the machine work involved with making the cleveland heads fit the windsor engine are not realy worth the effort. you have to plug holes in the heads,redril holes in the heads and block. Also the intake is the hardest thing to get as they arent made anymore that i know of and the intake is expensive. You can use the cleveland intake with adaptors but the water does not go thru the c intake like a w intake so you have to run the water out of the front of the heads to a T and then run to radiator. this way may not fit your stock head rule because of the water routing system. i would use a good set of early windsor heads with port work and chevy valves and the right cam.


CUSTOMPERFORMANCE
Member
posted February 26, 2002 09:25 AM
I have run the clevor engine and had nothing but problems with it. Cost of parts to do it and the reliability problems are part of it. I use the straight cleveland even though its about 30 lbs heavier with the aluminum intake compared to a windsor or a sbc with an aluminum intake. The weight is a small disadvantage but the reliabilty and the power i make with a relative stock engine outweigh the weight in my book.


modfan
Member
posted February 26, 2002 07:23 PM
I'm building a clevor now and it appears to be a real easy project. I'm using a victorjr intake for a short deck windsor and milling a set a 3/8 aluminum plates to match it up to the heads. I will even be able to use the victor water passages.


CUSTOMPERFORMANCE
Member
posted February 26, 2002 07:43 PM
the ports arent he same between a windsor intake and the cleveland ports? are you port matching them?


Tom Asmus
Member
posted February 26, 2002 10:06 PM
Custom is right the Windsor intake doesnt fit the clevor combo. You askin for a buch of Headaches if your gonna try to make it fit>


modfan
Member
posted February 27, 2002 08:25 PM
The ports are different shapes but there almost in the same places and there is enough room in the heads, the plates, and the intake to port match everything up. The key is to use a short deck windsor intake. This gives you room to port match and mill out the water passage to fit the windsor intake. By the way if world products or 351n heads will run circles around these heads why do they continue to run these heads in winston cup?

[This message has been edited by modfan (edited February 27, 2002).]

Tom Asmus
Member
posted February 27, 2002 08:52 PM
Are we running NASCAR!


powercar821111
Member
posted February 27, 2002 11:35 PM
Yes, they do run Cleveland-style heads in NASCAR, but they only have the same external configuration. The reason They run cleveland style heads (correct me if I'm wrong) is because they are much larger, therefore, much more can be done to them (porting, etc.) Just looking in the FRP catalog, the robert Yates heads have 40cc combustion chamber and the intake port is up to 4" tall. That's some good breathing....At 9000 rpm at least.


powercar821111
Member
posted February 27, 2002 11:41 PM
By the way, I have decided to stick with the gt40p's. I just decided it wasn't worth the headaches to try and make everything work right. Can you say "extra, extra, extra money?" Also, the open chambers would kill the power I would make through the increased flow. Just too many things against, for maybe not much or no more power. I want a reliable, decent, reasonably cheap engine for my deal. And did I mention the pistons.....etc. etc. etc.
Anyways, Thank you all for your helpful advice!!!


modfan
Member
posted February 28, 2002 03:46 PM
One of the key reasons they run cleveland heads is because of the combustion chamber shape. It is a semi-hemi type head so they can unshroud the valves and get a straighter shot into the combustion and out of the combustion chamber. By the way midwest motorsports has KB pistons for $139.00 a set.


Dirt-Tracker
Member
posted March 01, 2002 05:48 PM
Bury the 351 and get a 302....stroke & bore to 347. You can use 351 heads! You will save about 70 Lbs and have all kinds of torque. Try it, you'll enjoy it


mwmod34
Member
posted March 01, 2002 05:55 PM
ABSOLUTELY I just read the Ford short track power book on the 347 no less than 400 ft/lbs of torque from 3000 to 6800 rpm. When i do move from MW mod to open mod I will definately be going with the 347 just my 2 cents


powercar821111
Member
posted March 03, 2002 08:17 PM
I do agree that the 347 is tons better. I will probably use that in open mod, but as for this year, "no stroking," friggin rules!


Dirt-Tracker
Member
posted March 03, 2002 08:39 PM
Hey MWMOD34-----I have that book also. We're thinking very seriously about getting a block and stroker kit and try to build our own. Most engine builders around here charge alot to stick them together. Hmmmm..... I always learn things the expensive way!!! The book makes it sound pretty simple though.


mwmod34
Member
posted March 04, 2002 08:25 PM
im using a roller block from an 87-94 mustang the blocks are alot stronger than an earlier one but still lighter than a sbc


Tom Asmus
Member
posted March 04, 2002 10:16 PM
Which crank are you gonna use with the newer 302 block?


ford5
Member
posted March 05, 2002 06:59 AM
use an early 65-68 289 block if you can, the next best thing is an early 302, 68-74 if you want better than that find a Mexican 302 block they are the best , but hard to come by , worth about 400 bucks for a std. bore one. you will have to notch the bottoms of all your cyl. walls for rod clearance on the 347 i have a template and have built many winning 347's they are a real good combo for any class where there isnt a weight rule, if there is you better go more CIDs or you will get beat! at least here any how.


ford5
Member
posted March 05, 2002 07:06 AM
we also have run the clevor combo with some success last year it can be made to work but is difficult to work out the details sometimes , probably not feasible if your not a motorhead, lol but there are some advantages to this combo. Bobby Layne used to win alot of races a while back with one of those!


mwmod34
Member
posted March 07, 2002 08:36 PM
Im using the earlier 302 crank


ford5
Member
posted March 08, 2002 07:30 AM
the later style 302 crank is approx. 4 lbs. liter thanthe earlier one but u must use the later style balancer and flexplate (50 oz.)on the other hand a early 80's 255 crank is about 8 lbs. liter yet they have to be custom balanced to the bobweight but weigh in at 33 lbs,


Back to the Archives