Trying to do my homework. Comments on the pro/cons comparing the 1st level 700HP upgrades of the two companies.
Heffner compare to Hennessey
- Thread starter scanr
- Start date
shelbyelite
PERMANENTLY BANNED
- May 10, 2007
- 1
Honestly there is little if any difference. A pulley and tune is a pretty simple mod. Both vendors offer good pulley and tune setups
I like both of the performance package options. almost the same.
Both are supporting vendors.
I believe both packages include the Accufab throttle body, you will definitely need the Accufab Air inlet support.
http://www.accufabracing.com/ford_gt.htm
I would also check out www.discovery-automotive.com
aka: shadowman
IMHO. Highly recommend the following:
1. FRPP - Exhaust M-9430-GTX
- get them ceramic or JetHot coated
worth every penny.
either way you will need some type of upgraded exhaust with this performance setup.
2. NGK Iridium plugs
3. Halon engine bay fire system
4. Transaxle cooler kit
5. TA Transaxle overflow vented reservoir
Also, keep in mind, the HP packages are not RWHP, but a huge improvement over stock.
Good luck.
Both are supporting vendors.
I believe both packages include the Accufab throttle body, you will definitely need the Accufab Air inlet support.
http://www.accufabracing.com/ford_gt.htm
I would also check out www.discovery-automotive.com
aka: shadowman
IMHO. Highly recommend the following:
1. FRPP - Exhaust M-9430-GTX
- get them ceramic or JetHot coated
worth every penny.
either way you will need some type of upgraded exhaust with this performance setup.
2. NGK Iridium plugs
3. Halon engine bay fire system
4. Transaxle cooler kit
5. TA Transaxle overflow vented reservoir
Also, keep in mind, the HP packages are not RWHP, but a huge improvement over stock.
Good luck.
Apollo
GT Owner
fjpikul
GT Owner
Mullet
FORD GT OWNER
my vote is for Hennessey. I could not be happier with my 700hp hit he did for my car.
Once you are ready John does a great SC/TT kit as well. proven results too.
Once you are ready John does a great SC/TT kit as well. proven results too.
MAD IN NC
Proud Owner/ BOD blah bla
I feel the same about Heffner - Tune/ Pulley, Whipple etc....
dbackg pretty much summed it up with comparable options and requirements over both suppliers...
but - figure where you want to go with the car... As far as a pulley and installation of a tune - pick one and have the GT Guy's install it. They are closer than Heffner or Hennesey to you. Make sure the package has the SCT tuner with the stock, 93 and 100 tuner preloaded..... This is the first step to MORE!!!!!!!!!
PL510*Jeff
Well-known member
No need to choose one over the other.
Buy a second GT and have both a Heffner and a Hennessey.
Then consider buying a third GT and have the Roush set up.
And when the time is right --a 4th GT so you can have the Ford Performance upgrade.
And then repeat this process when you decide to go the TT route.
Buy a second GT and have both a Heffner and a Hennessey.
Then consider buying a third GT and have the Roush set up.
And when the time is right --a 4th GT so you can have the Ford Performance upgrade.
And then repeat this process when you decide to go the TT route.
spddmnjay
GT Owner
PL510*Jeff
Well-known member
They offer a pully & tune for the GT, and it has great instructions with pictures on how to do the upgrade.
Hennessey Performance
GT Owner
- Mar 15, 2006
- 767
Triheart7
GT Owner
shelbyelite
PERMANENTLY BANNED
- May 10, 2007
- 1
You are not far from us either. We offer both vendors pulley and tune 700hp set up and we are an hour North west of Memphis. Tn! 
S592R
GT Owner
- Dec 3, 2006
- 2,800
MAD IN NC
Proud Owner/ BOD blah bla
Can't go wrong with J.H. :thumbsup
:cheers
but the GT Guys are closer.......... and better yet, you'll enjoy being there with them while the work on you car - I promise.... you will see a side of the FGT that you are probably afraid of right now and better yet learn from them....
ie. they don't have to"rip" the interior out to get to the dog hatch for the Pulley change....
and you can hear, even see, of all the other mods they have done or are planning.........
:cheers
but the GT Guys are closer.......... and better yet, you'll enjoy being there with them while the work on you car - I promise.... you will see a side of the FGT that you are probably afraid of right now and better yet learn from them....
ie. they don't have to"rip" the interior out to get to the dog hatch for the Pulley change....
and you can hear, even see, of all the other mods they have done or are planning.........
Last edited:
- Feb 22, 2006
- 367
tpraceman
THEE GT OWNER
Heffner includes a trip to his P.B. mansion.......Make sure you tell the ladies to bend way over & duck when getting in and out of your GT:willy
When he's done you might have a smile which lasts longer than 4 hours
Hennessey his cars run on special fuel to costly for me.
COGNAC VSOP maybe easy to get in some towns but not mine.:eek
When he's done you might have a smile which lasts longer than 4 hours
Hennessey his cars run on special fuel to costly for me.
COGNAC VSOP maybe easy to get in some towns but not mine.:eek
GT mods
And 250+ people in the country not capable of doing the job right but will take your money anyway!
Ed
And 250+ people in the country not capable of doing the job right but will take your money anyway!
Ed