Or next car...
Thread Starter
Race Director
Joined: May 2003
Posts: 10,956
Likes: 409
From: California
me too:-) 
yes aerodynamics does become the main factor the faster you go... but weight does non the less does play a factor as well.
We are talking a 1000 lbs difference... nearly 1/3 of the weight is gone from the original GT... and with an increases of 150 hp tp boot.. I think 216 to 250 with both the major weight reduction and and additional 150hp and maybe that much in tq... it can be obtained.
I think Fran may be getting sick of my voice.. lol... but thank you, that is important for my goals, I will do that:-)
lot of power .. wow... I just want 250:-) 
what ever i end up with it will be well over 225 for sure... so, I guess I will find out in due time:-)
As V2 said before, it ain't the weight that's the problem, it's the aero drag.
While aero drag goes up by the square of the speed, the horsepower required to deal with that drag goes up by the cube. Going from 216 mph to 250 is a 16% speed increase (1.16). The horsepower needed is 1.16^3=1.55. A 55% increase in horsepower.
While aero drag goes up by the square of the speed, the horsepower required to deal with that drag goes up by the cube. Going from 216 mph to 250 is a 16% speed increase (1.16). The horsepower needed is 1.16^3=1.55. A 55% increase in horsepower.
We are talking a 1000 lbs difference... nearly 1/3 of the weight is gone from the original GT... and with an increases of 150 hp tp boot.. I think 216 to 250 with both the major weight reduction and and additional 150hp and maybe that much in tq... it can be obtained.
Thread Starter
Race Director
Joined: May 2003
Posts: 10,956
Likes: 409
From: California
I will build the 650hp SBF, if I feel it need more than that I can always add one one..
You helped me build the last SBC 427 that is in Baby,, thank you, you know your ****... I am going to copy the build into a ford
Last edited by pauldana; May 2, 2018 at 04:50 PM.
Le Mans Master
Joined: Oct 2010
Posts: 6,938
Likes: 848
From: melbourne florida
2023 C3 of the Year Finalist - Modified
I'm not trying to be a wet blanket or a know it all but some of you have no clue what it takes to reach those speeds. You could dial 3000 horsepower into that car and never get to 250 for a number of reasons. I know a guy that got 200 mph out of an 88 trans am with just about 500 h.p. frontal area is one thing aerodynamics another, lighter weight will work against you if everything else is out of wack. Nobody is going to let you even try to go that fast without the right safety equipment.
200 mph is a lofty but achievable goal. Darn few cars on the street can run that number.
I think a gt40 is a great idea and I'm sure you will build it safe,because I've enjoyed having you on the forum and would like you around much longer.I urge you go in steps.
I used to go a tick over 160 maybe 170 in a 1/4 mile and the difference between that and 120 Is a big darn deal.and going 140 in a flat bottom drag boat will scare the living crap out of you ,that I guarantee.there is much more than bench racing involved here.
200 mph is a lofty but achievable goal. Darn few cars on the street can run that number.
I think a gt40 is a great idea and I'm sure you will build it safe,because I've enjoyed having you on the forum and would like you around much longer.I urge you go in steps.
I used to go a tick over 160 maybe 170 in a 1/4 mile and the difference between that and 120 Is a big darn deal.and going 140 in a flat bottom drag boat will scare the living crap out of you ,that I guarantee.there is much more than bench racing involved here.
Thread Starter
Race Director
Joined: May 2003
Posts: 10,956
Likes: 409
From: California
I'm not trying to be a wet blanket or a know it all but some of you have no clue what it takes to reach those speeds. You could dial 3000 horsepower into that car and never get to 250 for a number of reasons. I know a guy that got 200 mph out of an 88 trans am with just about 500 h.p. frontal area is one thing aerodynamics another, lighter weight will work against you if everything else is out of wack. Nobody is going to let you even try to go that fast without the right safety equipment.
200 mph is a lofty but achievable goal. Darn few cars on the street can run that number.
I think a gt40 is a great idea and I'm sure you will build it safe,because I've enjoyed having you on the forum and would like you around much longer.I urge you go in steps.
I used to go a tick over 160 maybe 170 in a 1/4 mile and the difference between that and 120 Is a big darn deal.and going 140 in a flat bottom drag boat will scare the living crap out of you ,that I guarantee.there is much more than bench racing involved here.
200 mph is a lofty but achievable goal. Darn few cars on the street can run that number.
I think a gt40 is a great idea and I'm sure you will build it safe,because I've enjoyed having you on the forum and would like you around much longer.I urge you go in steps.
I used to go a tick over 160 maybe 170 in a 1/4 mile and the difference between that and 120 Is a big darn deal.and going 140 in a flat bottom drag boat will scare the living crap out of you ,that I guarantee.there is much more than bench racing involved here.
and I understand what you are saying..
but if a 3500lbs 550hp gt can go 216mph
then a 2500lbs 650hp gt should have no problem to 225 and a little beyond, how far... going to find out:-)
