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351 CLeavland
I was wondering why you don;t see more 351 Clevelands in Cobras. They were a pretty damned strong engine in the mustangs. Other than "correctness" that is. I see all sorts of engines in them, but not many 351 C's
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I'm also surprised that you just don't see a whole lot of Cleveland head buildups - Cobra and otherwise. The Windser head seems to dominate. The Cleveland is a pretty wide motor but no more so than some of the modular engines.
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The Cleveland certainly gets a raw deal. I probably build more Clevelands than any other engine builder on this forum, and can attest that they are very potent powerplants...
With a 9.200" deck height, they are smaller than a Windsor, and the heads are certainly equal if not superior to the Windsor heads as far as performance goes. It's hard to really make a Windsor head flow without going to a canted valve layout. I can get about 350 cfm out of a TW-R head, but from there on up, it takes a Cleveland head (Blue Thunder, Yates, etc.) to get more. |
After owning 2 1971 Boss 351's and a half dozen other mustangs with Cleveland's, It was an easy choice for me to go Cleveland power. Especially since I had a spare just sitting around....
Paul T. |
Clevors can easily make 620 HP with CHI heads on 91 octane.
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Back in the day when these were in OEM applications they weren't getting more than 10,000 miles before the valvetrain would begin making clicking and clacking noises. Many valve jobs done under Ford Factory warranty to remedy the problem. It wasn't until it was found to be the chroming process on the valve stems that was actually the problem. The stems were somewhat rough (you could feel it with a thumbnail). The valve guides were being heavily worn prematurely, causing increased valve guide clearance, which led to unwanted valve train noise. This held true for all the canted valve Fords 351,400,429,460. Took a while for engineers and suppliers to figure it out. It was a pain to face a customer that had bought a new car and had this going on 8 months later :(
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My dad had a station wagon with a 400 that he blew up, said he was sitting at a stop light.... One of my first get to work cars, that thing would fly!
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The Pantera has a 351C. It just looks gorgeous inside the back of that car !!!
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You mean a 351C that looks like this:
http://www.clubcobra.com/photopost/d...umbs/00119.JPG http://www.clubcobra.com/photopost/d...humbs/0059.JPG I think there are a number of 351C powered Cobras on the forum. Cheers Greg |
Edited........
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Cleveland engines
The BOSS 351 engine from the 1971 BOSS that my Dad bought new looked perfectly at home in the engine bay of my '72 Pantera:
http://www.clubcobra.com/photopost/d...ium/eng_21.jpg http://www.clubcobra.com/photopost/data/3202/M_20.jpg I had that engine in three different cars ('71 BOSS 351 Mustang, '68 Shelby GT500 convertible, and '72 Pantera) and put over 100,000 miles on it before I decided it was time to refresh it. Now it looks perfectly at home in my ERA FIA: http://www.clubcobra.com/photopost/d.../IMG_5599m.jpg http://www.clubcobra.com/photopost/d.../IMG_00831.JPG In the seventies when the 351C, M, and W were new, most all of the performance parts were made for the Cleveland design. These days most of the performance parts available for Ford 351s are for the Windsor design. Guess I'm still :old school" - love my Charlie engine. Jeff |
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Had one in my first Cobra (one of the earliest of the Butlers: #005...built in 82). Great motor...won several SCCA autocross seasons with it.
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