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351 w heads question

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Old 03-24-2013, 05:44 PM   #1
Join Date: Jul 2012
Vehicle: 1991 Mustang Gt
Location: Florida
Posts: 20
Default 351 w heads question

So today when I went and picked up my cobra intake manifold I got a pair of 351 Windsor heads with it for only 100 more bucks. The heads have got double valve springs, new valve guide seals. All work done from a machine shop and the heads were decked. Only about 20k miles on them since then. My question is I'm building a 302 with a cobra intake, b303 and I was think gt40p heads. Don't judge me, but would it be better to use the 351 heads for my build. Or stick with the gt40p heads? The heads have dl8 stamped on them.
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Old 03-25-2013, 12:25 AM   #2
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Are the 'double valve springs' really a double (both springs round) or is the inner 'spring' flat.
If it's flat those are single springs with a dampner.
I would stick to your original plan or even find some aftermarket heads......
GOOD,FAST, CHEAP-----------YOU CAN ONLY GET 2 OUT OF 3!!!!!!!!!!!!!!!!
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Old 03-25-2013, 06:46 AM   #3
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use the 351 section please

Originally Posted by EUTARD View Post
Suggest having a conversation with the highly INEXPERIENCED clowns....D.R the Dork, THE BarnyYard smells like......again and finally staring the highly intelligent and I must say skilled Eutard! UH where did de' go George
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Old 03-25-2013, 09:31 AM   #4
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Use the gt40p's. From my understanding, the 351w head is essentially the same thing as the e7 head. Plus you'll get better spark distribution with the p's. Unless the head had the valve pocket machined, then they probably aren't dual springs.
1995 Mustang GT
1999 F150 Lariat 4x4

Soon to come: 393 stroker
351w bored .030, Probe Industries forged internals, Trickflow 205's, FTI custom cam, Trickflow R 90mm intake, Accufab 90mm TB, FRPP 42lb injectors, 1 3/4" custom Accufab LT's, 3" exhaust, MS2
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Old 03-25-2013, 09:31 AM
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