Gear choice for Turbo Gen1 with 76GTSH ??

turbodgumby · 05-31-2009, 05:35 PM

I have the stock 4.10s and was wandering if I should do a gear change. It is doing pretty good so far. I have gears and can install them myself so its just a time issue and more expensive syn. gear oil. LOL.

Turbosvt93 · 06-01-2009, 07:51 AM

it was my understanding that a higher gear will help the engine load up, there for spooling the turbo faster. I went with 3.55s in my truck, but have not yet driven it. Maybe 3.55s or 3.73s.

I have seen a lot of turbo mustangs running 3.27s!

Just my .2

95STL · 06-01-2009, 08:06 AM

Quote:

Originally Posted by Turbosvt93

it was my understanding that a higher gear will help the engine load up, there for spooling the turbo faster. I went with 3.55s in my truck,

I have 3.55 in my truck now for when I do my turbo

Don 95Vert · 06-01-2009, 08:53 AM

I have a ball bearing 76mm turbo in my Gen 1 with stock 4.10 gears. It's just fine with the tall tires. What's funny is it HAD 3.08 gears in it for some strange reason when I got it and it was stock. Made me wonder if it was an 'Indy 500' edition or something - it IS white...
Don

giddyup · 06-01-2009, 12:48 PM

gumby i say 3.55s with them nitto drs. that was what i was planning with mine. still got the 3.55s and detriot sittin on the shelf.

Super Glide · 06-01-2009, 03:34 PM

Quote:

Originally Posted by Don 95Vert

I have a ball bearing 76mm turbo in my Gen 1 with stock 4.10 gears. It's just fine with the tall tires. What's funny is it HAD 3.08 gears in it for some strange reason when I got it and it was stock. Made me wonder if it was an 'Indy 500' edition or something - it IS white...
Don

HMM, seems like it wouldn't be reasonable to put 3.08 in with the speed limiter at 110. Don, can you read the EEC to see if you have a different processor? Maybe you do have a Indy truck with a different EEC

Don 95Vert · 06-01-2009, 03:42 PM

The original PCM is long gone - I run a 95 Mustang PCM now - T4M0...

turbodgumby · 06-02-2009, 08:57 PM

I have a set of 3.55s sitting on a shelf that are used but perfect with low miles on them. I guess I will get a pass at the track and see what rpms it goes through the traps. I am at full boost now at 2600rpm It does have lag just don't know if its just cause of the rich tip in stumble or just plain lag

05-31-2009, 05:35 PM	#1 (permalink)
turbodgumby GOT BOOST?? Paid Member Join Date: Jan 2009 Location: Port Acres, TX Posts: 1,192 NLOC member #: 2673 View this user's gallery iTrader: 0 / 0%	Gear choice for Turbo Gen1 with 76GTSH ?? I have the stock 4.10s and was wandering if I should do a gear change. It is doing pretty good so far. I have gears and can install them myself so its just a time issue and more expensive syn. gear oil. LOL.

06-01-2009, 07:51 AM	#2 (permalink)
Turbosvt93 Adam is Turbo Illiterate Join Date: Sep 2004 Location: Orlando, FL Posts: 2,660 View this user's gallery iTrader: 5 / 100%	it was my understanding that a higher gear will help the engine load up, there for spooling the turbo faster. I went with 3.55s in my truck, but have not yet driven it. Maybe 3.55s or 3.73s. I have seen a lot of turbo mustangs running 3.27s! Just my .2 __________________ Build Date 06/18/93 Truck #4117 Best E.T. 60' 2.1 13.065 @ 103

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06-01-2009, 08:53 AM	#4 (permalink)
Don 95Vert Registered User Join Date: Apr 2003 Location: Lost in Space Posts: 137 View this user's gallery iTrader: 1 / 100%	I have a ball bearing 76mm turbo in my Gen 1 with stock 4.10 gears. It's just fine with the tall tires. What's funny is it HAD 3.08 gears in it for some strange reason when I got it and it was stock. Made me wonder if it was an 'Indy 500' edition or something - it IS white... Don

06-01-2009, 12:48 PM	#5 (permalink)
giddyup Moderator Paid Member Join Date: Sep 2006 Location: Lake Charles LA Posts: 4,582 NLOC member #: 2230 View this user's gallery iTrader: 14 / 100%	gumby i say 3.55s with them nitto drs. that was what i was planning with mine. still got the 3.55s and detriot sittin on the shelf.

06-01-2009, 03:42 PM	#7 (permalink)
Don 95Vert Registered User Join Date: Apr 2003 Location: Lost in Space Posts: 137 View this user's gallery iTrader: 1 / 100%	The original PCM is long gone - I run a 95 Mustang PCM now - T4M0...

06-02-2009, 08:57 PM	#8 (permalink)
turbodgumby GOT BOOST?? Paid Member Join Date: Jan 2009 Location: Port Acres, TX Posts: 1,192 NLOC member #: 2673 View this user's gallery iTrader: 0 / 0%	I have a set of 3.55s sitting on a shelf that are used but perfect with low miles on them. I guess I will get a pass at the track and see what rpms it goes through the traps. I am at full boost now at 2600rpm It does have lag just don't know if its just cause of the rich tip in stumble or just plain lag