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Old 05-01-2012, 08:28 AM   #1
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Which heads

I have a 93 5.0 HO I was wondering if a pair of 351 heads will fit on my block I heard they will but I don't want to buy them and they not fit and my 5.0 is a roller motor isn't it?
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Old 05-01-2012, 09:11 AM   #2
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Quote:
Originally Posted by Ajsjstang
I have a 93 5.0 HO I was wondering if a pair of 351 heads will fit on my block I heard they will but I don't want to buy them and they not fit and my 5.0 is a roller motor isn't it?
Yes they will fit, but it's a waste. You won't gain anything from then over the e7 heads already in your car.
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Old 05-01-2012, 09:48 AM   #3
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Re: Which heads

What heads should I get
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Old 05-01-2012, 10:34 AM   #4
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Gt40's

---------- Post added at 10:34 AM ---------- Previous post was at 10:31 AM ----------

The gt40p's will also work of you have the right headers... What's your budget? But I'm sure the gt40's will be the best bang for the least amount spent... But If you can save and get some trick flows or edelbrocks it will be worth the wait
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Old 05-01-2012, 12:10 PM   #5
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Gt40's

---------- Post added at 10:34 AM ---------- Previous post was at 10:31 AM ----------

The gt40p's will also work of you have the right headers... What's your budget? But I'm sure the gt40's will be the best bang for the least amount spent... But If you can save and get some trick flows or edelbrocks it will be worth the wait
+1, but if you don't mind getting creative the gt40p heads don't require special headers, although they make things a lot simpler.
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Old 05-01-2012, 03:49 PM   #6
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Ok what do you have to change to run the p's? Does it just have non Emissions? it's been forever since I've ran them but I know it's like an extra 40hp over e7's
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Old 05-01-2012, 04:03 PM   #7
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Because the p heads better mixture burn. They didn't need the pollution port on the back.some people drill them in. Others delete smog. I am not sure if this true on all of them
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Old 05-01-2012, 04:54 PM   #8
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Re: Which heads

351 heads are e7's so it is a complete waste
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Old 05-01-2012, 05:05 PM   #9
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351 heads are e7's so it is a complete waste
with bigger combustion chambers i believe. which will actually lower the compression ratio.
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Old 05-01-2012, 07:01 PM   #10
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Re: Which heads

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Originally Posted by 93slowstang View Post
+1, but if you don't mind getting creative the gt40p heads don't require special headers, although they make things a lot simpler.
the p's do have specific headers due to the angle of the plug, atleastfor the shorties, there is no p specific longtube that I can remember.


just got with the frpp shorty p headers and call it a day an not spend countless hours trying to make something fit that wasnt designed to
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Old 05-01-2012, 07:04 PM   #11
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Quote:
Originally Posted by Ajsjstang
I have a 93 5.0 HO I was wondering if a pair of 351 heads will fit on my block I heard they will but I don't want to buy them and they not fit and my 5.0 is a roller motor isn't it?
Aussie 351c heads
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Old 05-01-2012, 07:22 PM   #12
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Quote:
Originally Posted by Bane-

the p's do have specific headers due to the angle of the plug, atleastfor the shorties, there is no p specific longtube that I can remember.

just got with the frpp shorty p headers and call it a day an not spend countless hours trying to make something fit that wasnt designed to
I am well aware of both the frpp and Mac p specific headers. Some of us are running non specific headers on our p heads with no problem. I'm using bbk headers on mine and only required one 90* plug. Doesn't take much.
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Old 05-02-2012, 04:55 PM   #13
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Yep I'd recommend the gt40p heads as well...damn good bang for the buck.I'm using then on my 302 with non specific long tube headers myself and I'm very happy
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Old 05-03-2012, 07:33 AM   #14
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Re: Which heads

Will gt49p heads on an explorer fit? Every place I look that is selling them says they will
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Old 05-03-2012, 07:44 AM   #15
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Yes p heads are from explorers.. Get them if they are cheap and send them to be vatted and milled if needed and cleaned up should only cost about $120

---------- Post added at 07:44 AM ---------- Previous post was at 07:42 AM ----------

If you can afford it get an angle job. If they can flow test take your intake in let them match the ports and polish them up.. That will be good power prob 50+ if you add the right combo
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Old 05-03-2012, 12:20 PM   #16
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They also come on the 5.0 mountaineer.
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Old 05-03-2012, 01:47 PM   #17
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Re: Which heads

What year range for the explorer and mountaineer?
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Old 05-03-2012, 01:53 PM   #18
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Never herd or seen gt40p heads put out 50 horses that's a bit much but who knows
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Old 05-03-2012, 02:30 PM   #19
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Never herd or seen gt40p heads put out 50 horses that's a bit much but who knows
I can see it possible if the get bigger valves and milled.
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Old 05-03-2012, 02:42 PM   #20
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And also match the ports to the intakes and have it polished. With a lil valve work.. Definitely 50hp gain with right cam combo
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Old 05-03-2012, 03:49 PM   #21
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Quote:
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What year range for the explorer and mountaineer?
96-early 97 explorer= gt40
Late 97-01 explorer and all mountaineers =gt40p
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Old 05-03-2012, 07:12 PM   #22
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The guy I got my car from said he gained around 58 but there's a f cam and over sized valves..they are awesome if you back them up with some supporting mods
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Old 05-03-2012, 11:34 PM   #23
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I just didn't know not saying they didn't just never seen pull of explore bolt straight to stang and do good lol but I dunno u live u learn lol
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