ok a few Q's
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ok a few Q's
Hello everyone here. I own a merc Mountaneer it is a 98 has been great for me, has a 302 motor in it just wondering if I could make this engine run better already have a great muffler and has a nice sound it breaths better nice pick up there next step air intake.
I know it is a Mountaneer and it is nice I dont know if it had been fixed up befor me, since every time when I get spark pluggs changed they say it is a high preformance motor? and I have to get preformance plugs and wires in the engine.
I know I may be wrong, sorry, but I have called some places and have been told to call ford racing for what, and why? what? is up with that? I just want to set it up more.
Did Merc send any mountaneers out high preformance?
Thanks!
I know it is a Mountaneer and it is nice I dont know if it had been fixed up befor me, since every time when I get spark pluggs changed they say it is a high preformance motor? and I have to get preformance plugs and wires in the engine.
I know I may be wrong, sorry, but I have called some places and have been told to call ford racing for what, and why? what? is up with that? I just want to set it up more.
Did Merc send any mountaneers out high preformance?
Thanks!
Senior User
Joined: Jun 2005
Posts: 121
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From: london, Kentucky
Well, You have the Gt-40p heads(or maybe it was Gt-40x, these guys can tell you) Which are freaking evil as far as stock ford small block heads are concerned. Bigger valves, better plug placement, smaller combustion chambers, just better in just about every way, other than that I don't know though, but that makes it a step above most other Ford small block V8's.
FTE Legend
Joined: Jun 2006
Posts: 31,930
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From: Ottawa, Ontario
That motor had GT40p heads and a cast version of the GT40 intake, both of which flow better than any of the other factory car intakes. The heads require a rare long stem plug but otherwise regular 5.0 wires and ignition parts.
It's a mass air EFI system, so don't make the mistake of removing the airbox and clamping a big open air filter where it was, milage and performance will tank. Instead install a drop-in filter if you must and remove any restrictions from the air inlets feeding the air box. Be sure to keep it plumbed to the outside however, you don't want it drawing hot under hood air. The biggest performance bottleneck on this vehicle is the exhaust system. Unfortunately, there are no aftermarket headers available and the stock cats are pretty restrictive. Again don't get carried away with hanging monster pipes under the truck, a single high quality 2.5" system is plenty for the motor.
It's a mass air EFI system, so don't make the mistake of removing the airbox and clamping a big open air filter where it was, milage and performance will tank. Instead install a drop-in filter if you must and remove any restrictions from the air inlets feeding the air box. Be sure to keep it plumbed to the outside however, you don't want it drawing hot under hood air. The biggest performance bottleneck on this vehicle is the exhaust system. Unfortunately, there are no aftermarket headers available and the stock cats are pretty restrictive. Again don't get carried away with hanging monster pipes under the truck, a single high quality 2.5" system is plenty for the motor.
Posting Guru
Joined: Mar 2007
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From: conroe tx
[QUOTE=Conanski] Unfortunately, there are no aftermarket headers available
summit has frpp headers for them http://store.summitracing.com/partdetail.asp?autofilter=1&part=FMS%2DM%2D9430%2D P51&N=700+4294908331+4294840126+4294889096+4294908 282+4294923429+4294918680+4294880275+400070+115&au toview=sku
summit has frpp headers for them http://store.summitracing.com/partdetail.asp?autofilter=1&part=FMS%2DM%2D9430%2D P51&N=700+4294908331+4294840126+4294889096+4294908 282+4294923429+4294918680+4294880275+400070+115&au toview=sku
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Dear Sir,
Your thread on the GT40P heads interests me because I am putting a pair on my 85' F250 / 351w. On your bronco were the heads you suggested from summit a direct fit ?
If not cuold you elaborate on how you remedied the problem(s) PLEASE ???
Your thread on the GT40P heads interests me because I am putting a pair on my 85' F250 / 351w. On your bronco were the heads you suggested from summit a direct fit ?
If not cuold you elaborate on how you remedied the problem(s) PLEASE ???
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Posting Guru
Joined: Mar 2007
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From: conroe tx
Originally Posted by bbyr4965
Dear Sir,
Your thread on the GT40P heads interests me because I am putting a pair on my 85' F250 / 351w. On your bronco were the heads you suggested from summit a direct fit ?
If not cuold you elaborate on how you remedied the problem(s) PLEASE ???
Your thread on the GT40P heads interests me because I am putting a pair on my 85' F250 / 351w. On your bronco were the heads you suggested from summit a direct fit ?
If not cuold you elaborate on how you remedied the problem(s) PLEASE ???
maybe one of the other guys can give you some first hand info.
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FTE Legend
Joined: Jun 2006
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From: Ottawa, Ontario
Originally Posted by dragogt
Originally Posted by Conanski
Unfortunately, there are no aftermarket headers available..
Posting Guru
Joined: Mar 2007
Posts: 2,216
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From: conroe tx
what about these? http://www.explorerexpress.com/heade...r50-p-726.html sez that their for 96 and early 97 models what changed?
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