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86 GT Build-up

Old 03-21-2007, 06:03 PM
  #1  
Luch
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Default 86 GT Build-up

I have a 1986 Mustang GT and was looking for some oppinions on the best way to get >400 rwhp. I am looking for the best bang for the buck. My budget is $4200.00. The car is stock with shorty headers and a flow-master exhaust. what do you think?
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Old 03-21-2007, 06:11 PM
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ZachW04Stang
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Default RE: 86 GT Build-up

Get a set of heads, a blower, and the supporting mods (fuel pump, injecters, etc) and you should be close to 350 at least if not higher.
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Old 03-21-2007, 06:11 PM
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frdmstng1986GT
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Default RE: 86 GT Build-up

ORIGINAL: Luch

I have a 1986 Mustang GT and was looking for some oppinions on the best way to get >400 rwhp. I am looking for the best bang for the buck. My budget is $4200.00. The car is stock with shorty headers and a flow-master exhaust. what do you think?
supercharger and nitrous. the heads in 86 suck. also, because of the pistons used the only aftermarket head that works on them is a trickflow twisted wedge without fly-cutting the pistons or changeing them. even then you have to run a stock cam because there will be piston to valve clearence problems with the stock pistons. youre best bet is to find an 87-92 5.0 ho and then build it up.
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Old 03-21-2007, 06:30 PM
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PJB
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Default RE: 86 GT Build-up

Before you do anything youre going to need to convert to MAF from Speed Density.
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Old 03-21-2007, 06:49 PM
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dman302
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Default RE: 86 GT Build-up

keep it as is and go with a blower...you can remain SD and still run boost....types of blowers and boost levels, I'll leave that to someone more experienced than myself.
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Old 03-22-2007, 05:05 AM
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capri debris
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Default RE: 86 GT Build-up

I'm in the same boat as you. I have an '86 Capri I'm building up right now... my budget is considerably higher that yours though, so you might not be able to accomplish 400 hp unless you're willing to spend a little more. This is how I'm building mine. Converting to mass air, tearing down the stock block, hot tanking it, re-using the block/crank/pistons/rods, intalling the Trick Flow track heat kit, 70mm TB, 75mm MA, EGR delete, 30lb injectors, 255 fuel pump, A/C and smog pump delete, underdrive pulleys, C&L air tube, MSD distributor & ignition, a ZEX wet 125 hp shot and a dyno tune. This combo should be good for 350hp N/A and 475 hp on the bottle. HopeI gave you some goodideas for your build.
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Old 03-22-2007, 05:22 AM
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Chitown racer
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Default RE: 86 GT Build-up

ORIGINAL: capri debris

I'm in the same boat as you. I have an '86 Capri I'm building up right now... my budget is considerably higher that yours though, so you might not be able to accomplish 400 hp unless you're willing to spend a little more. This is how I'm building mine. Converting to mass air, tearing down the stock block, hot tanking it, re-using the block/crank/pistons/rods, intalling the Trick Flow track heat kit, 70mm TB, 75mm MA, EGR delete, 30lb injectors, 255 fuel pump, A/C and smog pump delete, underdrive pulleys, C&L air tube, MSD distributor & ignition, a ZEX wet 125 hp shot and a dyno tune. This combo should be good for 350hp N/A and 475 hp on the bottle. HopeI gave you some goodideas for your build.
Really?, your gonna use the stock 86 pistons.
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Old 03-22-2007, 03:17 PM
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capri debris
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Default RE: 86 GT Build-up

ORIGINAL: Chitown racer

ORIGINAL: capri debris

I'm in the same boat as you. I have an '86 Capri I'm building up right now... my budget is considerably higher that yours though, so you might not be able to accomplish 400 hp unless you're willing to spend a little more. This is how I'm building mine. Converting to mass air, tearing down the stock block, hot tanking it, re-using the block/crank/pistons/rods, intalling the Trick Flow track heat kit, 70mm TB, 75mm MA, EGR delete, 30lb injectors, 255 fuel pump, A/C and smog pump delete, underdrive pulleys, C&L air tube, MSD distributor & ignition, a ZEX wet 125 hp shot and a dyno tune. This combo should be good for 350hp N/A and 475 hp on the bottle. HopeI gave you some goodideas for your build.
I called the Trick Flow tech line and asked about piston to valve clearance issues andthey said flat tops are recommended with the upper end kit they sell. I'm still going to clay it up on one cylinder to check for myselfonce I get all the parts, but they insist that it'll be OK. I'll let everyone here know for sure.

Really?, your gonna use the stock 86 pistons.
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Old 03-23-2007, 04:59 AM
  #9  
Chitown racer
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Default RE: 86 GT Build-up

Well, yes they recommend flat tops, but I'm sure what they mean by flat tops are ones that have valve reliefs. As yours is the only year that came "without" them, I would almost bet your going torun into problems, buthey I've been wrong before.
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Old 03-23-2007, 05:21 AM
  #10  
86 5.0L
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Default RE: 86 GT Build-up

flat tops pistons are from the 86 5.0, no valve reliefs in them, hence the "FLAT" top name, all other HOs have reliefs in them, thus can use ALOT more heads
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