Gears Can i pull it off

drtbiker · 04-20-2003, 03:17 PM

I want to do 4.30's in the car. I was wondering how hard is it to install the gears. How much time am i looking at? Are there any special tools i need? So far i have done everything on my car its just me and drive train i am not to smart with. I think i can pull of the gear swap but i just was wondering if there is anything i need to know. Also is there a site with step by step or somthing near step by step directions. My gears are killing my power. The cam pulls really hard upper rpms but off the line is killing me

later

bigred90gt · 04-20-2003, 03:29 PM

I have never done a gear swap, but from what I've read here, unless you are a seasoned machanic, it is a sonofa***** job. Someone might have a different opinon, but that seems to be the general consensus.

Caymon

gofastmercury · 04-20-2003, 04:15 PM

I did my own, and got lucky that the factory shims where right, I think thats like winning the lottery. If your not sure, and don't want to do it twice, then pay to get it done, but you could probaly screw up twice and still be cheaper, and then you would know how.

MEDIK418 · 04-20-2003, 05:13 PM

It's really easy to do. I promise. There is a site called Randy's Driveline and he has all kinds of tech articles on this stuff. You will need a means to put about 250 pounds of torque on the pinion nut. A good impact will help with this but you can use a torque wrench if you have a big'un. You'll need a dial indicator and a stand, harbor freight has these for about 20 bucks total investment. Most of the time, if you're just changing the gears, you can re-use the shims. Some gears are thicker than standard and the 4:30's may be, so you'll probably need a shim kit for the carrier. My first one took me about 4 hours, start to finish. Last week I changed out the differential on the 89 in 2 hours.
One thing and you'll see what I mean later, put the carrier shims in place with some grease BEFORE you try to push in the carrier.

drtbiker · 04-21-2003, 11:28 PM

hmm i think i may give it a shot

whats the worse that can happen i have to start all over again?

04-20-2003, 03:17 PM	#1
drtbiker Registered Member Join Date: Jan 2002 Location: Mt. Prospect,IL Posts: 474	Gears Can i pull it off I want to do 4.30's in the car. I was wondering how hard is it to install the gears. How much time am i looking at? Are there any special tools i need? So far i have done everything on my car its just me and drive train i am not to smart with. I think i can pull of the gear swap but i just was wondering if there is anything i need to know. Also is there a site with step by step or somthing near step by step directions. My gears are killing my power. The cam pulls really hard upper rpms but off the line is killing me later __________________ 87-ford-mustang-SOLD! mods: 3:73's, off road h-pipe, b303 cam in gt- 40 motor w/ Power Plus intake, edelbrock 70mm tb & egr spacer, 72mm C&L, bbk long tubes, tremec tranny, centerforce dual friction clutch, upr and lwr CA's 255lph FP and soon more to come.... when i have money again SOME ADVICE Don't do burn outs in reverse it is very expensive New times with dead hook on dr's 13.27@103 with 2.0 60 foots w/100lb system Fastest time to date: 12.8@113

04-20-2003, 03:29 PM	#2
bigred90gt 2 Stangs in the Stable Join Date: Apr 2002 Location: Baytown, TX Posts: 1,209	I have never done a gear swap, but from what I've read here, unless you are a seasoned machanic, it is a sonofa***** job. Someone might have a different opinon, but that seems to be the general consensus. Caymon __________________ '90 GT Under construction Best E.T. = Fast @ High Speeds - OK So I Lie. So What!!! 04 F-150 STX 4.2L 5 spd Rice Haters Club Member #128

04-20-2003, 04:15 PM	#3
gofastmercury Registered Member Join Date: May 2001 Location: calgary alberta canada Posts: 366	I did my own, and got lucky that the factory shims where right, I think thats like winning the lottery. If your not sure, and don't want to do it twice, then pay to get it done, but you could probaly screw up twice and still be cheaper, and then you would know how. __________________ 93LXcopcarSOLD14.3@96 @ 4500ft 2.02 60ft on street tires. my 67 ranchero NOT A 390 ANY MORE! 460! 3.70's cast manifolds, comp cams 262H, performer, 750DP 100K out of 79 F250 NEW(oct20/02)14.58@95mph 2.3 60 ft corrects to:13.86@100 66 merc comet351w, isky roller 600 lift 268/260@.050, vic jr. 700DP, 5000stall, 4.56's c-4, 3400lbs with driver 12.3@110 @ 4000ft 1.69 60 ft corrects to:11.69@115

04-20-2003, 05:13 PM	#4
MEDIK418 Registered Member Join Date: Mar 1999 Location: Amarillo, Texas, USA Posts: 780	It's really easy to do. I promise. There is a site called Randy's Driveline and he has all kinds of tech articles on this stuff. You will need a means to put about 250 pounds of torque on the pinion nut. A good impact will help with this but you can use a torque wrench if you have a big'un. You'll need a dial indicator and a stand, harbor freight has these for about 20 bucks total investment. Most of the time, if you're just changing the gears, you can re-use the shims. Some gears are thicker than standard and the 4:30's may be, so you'll probably need a shim kit for the carrier. My first one took me about 4 hours, start to finish. Last week I changed out the differential on the 89 in 2 hours. One thing and you'll see what I mean later, put the carrier shims in place with some grease BEFORE you try to push in the carrier. __________________ 1986 four-eyed LX coupe, 358 Cleveland, Tremec TKO600/centerforce clutch, dish cut Probe forged pistons, comp cams hyd.roller cam, .579/.588@224/230, Edel.performer, 670 holley street avenger, CPR custom built long tubes, ported and polished 4bbl heads, manley valves, beehive springs, MSD peo-billet dist/MSD6AL, fluidamper, 5 lug conv. with 17x8 bullits there's more but it's still not finished yet. Oh, and the oldest boy is turning his 89 GT into a FFR cobra this next summer.

04-21-2003, 11:28 PM	#5
drtbiker Registered Member Join Date: Jan 2002 Location: Mt. Prospect,IL Posts: 474	hmm i think i may give it a shot whats the worse that can happen i have to start all over again? __________________ 87-ford-mustang-SOLD! mods: 3:73's, off road h-pipe, b303 cam in gt- 40 motor w/ Power Plus intake, edelbrock 70mm tb & egr spacer, 72mm C&L, bbk long tubes, tremec tranny, centerforce dual friction clutch, upr and lwr CA's 255lph FP and soon more to come.... when i have money again SOME ADVICE Don't do burn outs in reverse it is very expensive New times with dead hook on dr's 13.27@103 with 2.0 60 foots w/100lb system Fastest time to date: 12.8@113

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