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Author
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Topic: What kind pistons in a 74 351W??
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Dubz
Gearhead Posts: 443
From: Manitoba Canada
Registered: Oct 2002
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posted 01-13-2003 02:01 AM
   
what is the make of the pistons found in the 74 smog motor?? would they be able to handle 9.5:1 compression?? or is that a negatory??------------------
1974 Gran Torino, 351W
1970 Mustang Grande, 289 Just a young buck
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V8 Thumper
Gearhead Posts: 3467
From: Orange, Ca. United States of America
Registered: Dec 2001
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posted 01-13-2003 04:26 AM
Even if cast pistons (likely), with proper timing and fuel quality and they'll handle 9.5 no problem. Not for nitrous oxide or high rpm use however.
The problem may be getting to 9.5:1 with those pistons... they're likely to be dished 20-some cc's. What heads do you intend to run?------------------
1965 GT coupe, 333ci aluminum headed/solid cammed stroker, four speed, 3.70:1 9" All Blue Oval, no blue bottle
http://mustangsandmore.50megs.com/V8Thumper.html [This message has been edited by V8 Thumper (edited 01-13-2003).]
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Dubz
Gearhead Posts: 443
From: Manitoba Canada
Registered: Oct 2002
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posted 01-13-2003 02:03 PM
I prolly won't get to 9.5:1 but that is as high as i would like to go. Felpro has some super thin head gaskets that are supposed to be twice as thin as normal gaskets, as well as i was planning on getting the heads milled to boost some compression. I had heard a 8.5:1 compression ratio at one time, so was looking to get substancially higher.Just something to tide me over until i do a complete rebuild, whether it's for NA, nitrous, or a blower/turbo. ------------------
1974 Gran Torino, 351W
1970 Mustang Grande, 289 Just a young buck
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Just Strokin
Gearhead Posts: 754
From: Tuscaloosa, Alabama
Registered: Dec 2001
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posted 01-13-2003 02:18 PM
Just a tid bit of info to maybe ease your worries, the 351c 4V came with cast pistons and was 11 to 1 compression in 1970.------------------
Larry No fast Fords at this time but one fine cruising 96 F350 CC DRW Power Strokin diesel.
And one rusty 64 Fairlane nick-named the Rust Bucket....And sometimes called the Money Pit... The sounds of a brain dropping into gear.....
"Buzzzzzz.......Click"
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Dubz
Gearhead Posts: 443
From: Manitoba Canada
Registered: Oct 2002
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posted 01-13-2003 06:58 PM
how does that help me with my 351W???
just that cast pistions can hold up to 11:1?? not all of them though.....------------------
1974 Gran Torino, 351W
1970 Mustang Grande, 289 Just a young buck [This message has been edited by Dubz (edited 01-13-2003).] [This message has been edited by Dubz (edited 01-13-2003).]
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