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351 win 


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 Post subject: 351 win
Posted: Wed Nov 17, 2004 3:47 pm 
Fordmods Newbie

Age: 37

Posts: 3

Joined: 17th Nov 2004

Ride: XY UTE

Location: heathcote
VIC, Australia

whats the dif in power between the 1981 351 w and the 1970 351w????????
 Post subject: Re: 351 win
Posted: Thu Nov 18, 2004 12:49 pm 
EFI Guru

Age: 52

Posts: 4300

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Ride: 351 Vogue,XH 5.0,'17 5.0 Stang

Location: Perth
WA, Australia

Not a great deal if you're talking 2 barrel engines although the '70 model will still be in front due to compression alone and the fact it has 1.85/1.55 valves and bigger intake ports.
Now a '70 4V engine will be considerably better again with much higher compression and was rated at 290hp gross.
The late 351w engines are way down on compression with big dishes in their pistons combined with a taller deck of 9.503" compared to the '69-'70 engines 9.430" deck. Late engines used basically the same heads as 302's with tiny 1.78/1.45 valves and the little 302 intake ports. Exhaust ports are a much of muchness in all std windsors.

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