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FED 387 08-15-2021 08:24 PM
Gt/ba ???
 
A local racer wants to convert his 68 Malibu Coupe into a GT/BA using a 454/450 engine ---his car he says weighs 3400 pounds ---what type of power is he going to need to run the index of 9.80 and to run under the index 4-5 tenths??? Is this a "costly" mission or can this be "easily" (LOL) achieved??? Thanx FED 387

4406mopar 08-16-2021 12:43 AM
Re: Gt/ba ???
 
Quote:
Originally Posted by FED 387 (Post 645563)
A local racer wants to convert his 68 Malibu Coupe into a GT/BA using a 454/450 engine ---his car he says weighs 3400 pounds ---what type of power is he going to need to run the index of 9.80 and to run under the index 4-5 tenths??? Is this a "costly" mission or can this be "easily" (LOL) achieved??? Thanx FED 387
Well how many other 68 Malibu’s you see in GT/BA? Or factory rear wheel drive cars? Costly and foolish.

Jim Hanig 08-17-2021 11:38 AM
Re: Gt/ba ???
 
Quote:
Originally Posted by FED 387 (Post 645563)
A local racer wants to convert his 68 Malibu Coupe into a GT/BA using a 454/450 engine ---his car he says weighs 3400 pounds ---what type of power is he going to need to run the index of 9.80 and to run under the index 4-5 tenths??? Is this a "costly" mission or can this be "easily" (LOL) achieved??? Thanx FED 387
Wild guess 760 tough to be fast with that combo.

Aaron Allison 08-17-2021 11:44 AM
Re: Gt/ba ???
 
I think that would be a cool combo. Something different.

Online calculator says 715 to run the index and 800 to run 40 under.

FED 387 08-17-2021 01:20 PM
Re: Gt/ba ???
 
what does NHRA factor that engine to???

Ernie Neal 08-17-2021 01:38 PM
Re: Gt/ba ???
 
Quote:
Originally Posted by FED 387 (Post 645694)
what does NHRA factor that engine to???
465 oem aluminum 475

FED 387 08-17-2021 01:50 PM
Re: Gt/ba ???
 
thats what i thought i read---now you multiply that by 7 or 8 . whatever that number is something and add 175 pounds driver weight to get your car minimum weight correct?

Stewart Way 08-17-2021 02:03 PM
Re: Gt/ba ???
 
6.5 plus 170 driver.

Brett C 08-17-2021 02:26 PM
Re: Gt/ba ???
 
800 hp

Adger Smith 08-17-2021 07:50 PM
Re: Gt/ba ???
 
GT/B and GT/BA - 6.50 Lb/HP 3023 -261 3193 9.70 9.80 6.32 6.38

With a 1970 402 375 HP it makes the weight of the car better..

GT/E and GT/EA - 8.00 Lb/HP 3240 -43 3410 10.00 10.10 6.50 6.57

FED 387 08-17-2021 08:14 PM
Re: Gt/ba ???
 
Personally I think he's nuts--- Definitely not the way I would go---ME I think I would look at some sort of a SBC---those BBC can get real expensive real quick !!!!!!!! not that a SBC is any cheaper---then factor in a trans , convertor, rear gears etc. he is going to spend a whole summer just to get the car down the track with decent numbers--Thnks all for the input FED 387

Adger Smith 08-18-2021 05:38 PM
Re: Gt/ba ???
 
Look at it like it was suggested to me on a Gen 3 car I have.
A well known racer told me to run a mild BB and run .5 under or where ever. You then have a fast enough and dependable enough car to make some big money bracket races. Multi purpose.
I'm going to do the baby oval port 402.

Jim Hanig 08-19-2021 02:48 PM
Re: Gt/ba ???
 
Quote:
Originally Posted by Adger Smith (Post 645783)
Look at it like it was suggested to me on a Gen 3 car I have.
A well known racer told me to run a mild BB and run .5 under or where ever. You then have a fast enough and dependable enough car to make some big money bracket races. Multi purpose.
I'm going to do the baby oval port 402.
Which head are you going to use Adger

Adger Smith 08-20-2021 02:18 AM
Re: Gt/ba ???
 
Jim,
Was thinking about the '71 402 / 300 for GT RWD Auto rated at 312 with a 291 head or 322 with GMPP alum head...
Not sure what would fit best in the Gen 3 car I have.
I like the 375 HP 402's too...I have most of the parts for one with GMPP Heads.. any thoughts or advice?

novassdude 08-20-2021 12:30 PM
Re: Gt/ba ???
 
I think wait till next year and build a GT car with the new 572. Would that be legal in an older car for GT?

Nick Heath 08-20-2021 12:56 PM
Re: Gt/ba ???
 
Quote:
Originally Posted by novassdude (Post 645924)
I think wait till next year and build a GT car with the new 572. Would that be legal in an older car for GT?
No. Only FGT (Factory GT) classes. Same with any other new COPO engine. Still a cool combination, though!

Andys dad 08-20-2021 01:01 PM
Re: Gt/ba ???
 
Quote:
Originally Posted by Adger Smith (Post 645889)
Jim,
Was thinking about the '71 402 / 300 for GT RWD Auto rated at 312 with a 291 head or 322 with GMPP alum head...
Not sure what would fit best in the Gen 3 car I have.
I like the 375 HP 402's too...I have most of the parts for one with GMPP Heads.. any thoughts or advice?
Exactly

doglover44 08-20-2021 02:00 PM
Re: Gt/ba ???
 
Quote:
Originally Posted by Nick Heath (Post 645931)
No. Only FGT (Factory GT) classes. Same with any other new COPO engine. Still a cool combination, though!
Whats Factory GT ?


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