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Luch 03-21-2007 06:03 PM

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?

ZachW04Stang 03-21-2007 06:11 PM

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.

frdmstng1986GT 03-21-2007 06:11 PM

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.

PJB 03-21-2007 06:30 PM

RE: 86 GT Build-up
 
Before you do anything youre going to need to convert to MAF from Speed Density.

dman302 03-21-2007 06:49 PM

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.

capri debris 03-22-2007 05:05 AM

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.

Chitown racer 03-22-2007 05:22 AM

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.

capri debris 03-22-2007 03:17 PM

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.

Chitown racer 03-23-2007 04:59 AM

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.

86 5.0L 03-23-2007 05:21 AM

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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