GT40P swap

BigO'Deal · February 7th, 2012, 12:48 PM

ok i had some recent threads on cheap bolt ons but i decided to just give up trying to find cheap hp. so i decided to just do a cheap head swap. ok my idea was some gt40p heads fully rebuilt and valve work, (im still waiting on the quote on that). i was looking at a Compcams k kit that ive heard some good reviews about. that providing the new springs, some Scorpian 1.6 rockers, the cam in the k kit has a .512 lift, 230* so it all works there. MSD distributor gear, and the timing chain. Explorer intake ported and polished, 24# injectors, 70mm TB & EGR, 1 inch intake spacer, and a proM MAF all on the stock bottom end. Yes its over what i should spend but it will be well worth it for me. oh and 4.10 gears cant forget them.

GT40P heads rebuilt & valve work, port/polish
CompCams k kit (cam,springs & hardware, timing chain)
scorpian 1.6 rockers
24# injectors
exploer intake ported & polished w/ 1'' intake spacer
BBK 70mm TB & EGR
ProM 75mm MAF
MSD distributor gear

good setup for an easy 300 horsepower?

ryanw · February 7th, 2012, 12:57 PM

After you get the quote for doing the gt40 heads post up what it will cost before you buy and do the work. Cuz used trick flow heads can be had for around 800, so if the cost of the gt40 stuff is any where near that number, then id skip it and pay a few more bucks to have a better head. Just my opinion though

StangBanger302 · February 7th, 2012, 02:17 PM

Honestly, if you're dead set on a pair of GT40ps, go with the Thumper heads http://www.hunterstyle.com/thumper/ He does great work on them for a reasonable price (considering they're ready to bolt on).

BUT, if you're not dead set on them, I would consider Trick Flow 170cc twisted wedge heads for your car. Used, they can be had for 700-900$. They also have more potential and you will have room to grow with them.

ALEXLOPEZ62188 · February 7th, 2012, 04:39 PM

It'll make 300 ish at the flywheel.
My gt40 combo with tfs1 cam made about 275whp.
Right around where it should be.
But I got bored of that shit too quick and ended up doing the stroker and aluminum heads.
Save up a little longer and just do the trickflow heads. You'll be much happier with the results.

February 7th, 2012, 12:48 PM	#1
BigO'Deal Newbie 1990 Mustang LX Never ran it Join Date: Dec 2011 Location: South Bend, Indiana Posts: 28 iTrader: 0 reviews	GT40P swap ok i had some recent threads on cheap bolt ons but i decided to just give up trying to find cheap hp. so i decided to just do a cheap head swap. ok my idea was some gt40p heads fully rebuilt and valve work, (im still waiting on the quote on that). i was looking at a Compcams k kit that ive heard some good reviews about. that providing the new springs, some Scorpian 1.6 rockers, the cam in the k kit has a .512 lift, 230* so it all works there. MSD distributor gear, and the timing chain. Explorer intake ported and polished, 24# injectors, 70mm TB & EGR, 1 inch intake spacer, and a proM MAF all on the stock bottom end. Yes its over what i should spend but it will be well worth it for me. oh and 4.10 gears cant forget them. GT40P heads rebuilt & valve work, port/polish CompCams k kit (cam,springs & hardware, timing chain) scorpian 1.6 rockers 24# injectors exploer intake ported & polished w/ 1'' intake spacer BBK 70mm TB & EGR ProM 75mm MAF MSD distributor gear good setup for an easy 300 horsepower?

February 7th, 2012, 12:57 PM	#2
ryanw I Post Entirely Way Too Much 1991 Ford Mustang GT Join Date: May 2007 Location: San Diego, California Posts: 6,063 iTrader: 0 reviews	After you get the quote for doing the gt40 heads post up what it will cost before you buy and do the work. Cuz used trick flow heads can be had for around 800, so if the cost of the gt40 stuff is any where near that number, then id skip it and pay a few more bucks to have a better head. Just my opinion though __________________ DART 331ci stroker, AFR 185 heads, Trick Flow R intake, Accufab 70mm tb, 75mm pro m Maf, 30lb injectors, jba headers, 2 1/2" x pipe flowmaster super 10 mufflers, 255 fuel pump, 3:27 gears

February 7th, 2012, 02:17 PM	#3
StangBanger302 Hardcore Enthusiast 1992 Mustang LX 13.0 @ 105 Join Date: Jun 2010 Location: New York Posts: 2,230 iTrader: 0 reviews	Honestly, if you're dead set on a pair of GT40ps, go with the Thumper heads http://www.hunterstyle.com/thumper/ He does great work on them for a reasonable price (considering they're ready to bolt on). BUT, if you're not dead set on them, I would consider Trick Flow 170cc twisted wedge heads for your car. Used, they can be had for 700-900$. They also have more potential and you will have room to grow with them. __________________ As I lay rubber down the street I pray for traction I can keep But if I spin, and begin to slide Please dear God, protect my ride

February 7th, 2012, 04:39 PM	#4
ALEXLOPEZ62188 Mustang Fanatic 1989 Mustang LX Join Date: Feb 2011 Location: Apple Valley, CA Posts: 409 iTrader: 0 reviews	It'll make 300 ish at the flywheel. My gt40 combo with tfs1 cam made about 275whp. Right around where it should be. But I got bored of that shit too quick and ended up doing the stroker and aluminum heads. Save up a little longer and just do the trickflow heads. You'll be much happier with the results. __________________ 89 Mustang LX: 347 AFR Comp Cam TFS Track Heat 359rwhp 395rwtq

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