Transmissions and Drivetrain Need help with your trans? Problems with your axle?

Gasket or silicone for rear end cover?

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Old

Jul 23, 2011 | 12:10 PM

#1

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Joined: Apr 2000

Posts: 2,337

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Car: 87 IROC

Engine: modded LB9

Transmission: Pro Built 700R4

Gasket or silicone for rear end cover?

I'm fitting a Summit aluminum cover to my 10 bolt and it came with a gasket but the instructions say not to use a gasket and only to use silicone sealer. Just wondering what most people use when installing their rear end covers?

Thanks,

Old

Jul 23, 2011 | 12:11 PM

#2

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Joined: Jan 2000

Posts: 20,981

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From: Mercedes Norte, Heredia, Costa Rica

Car: 1984 Z28 Hardtop

Engine: 383 Carb

Transmission: 4L60

Axle/Gears: 3.54 Dana 44

Re: Gasket or silicone for rear end cover?

Silicone

Old

Jul 23, 2011 | 01:09 PM

#3

$//<86TA>\\'s Avatar$

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From: Central NJ

Car: 86 Trans Am

Engine: 408 stroker sbc

Transmission: TKO600

Axle/Gears: Moser full floater m9, 3:70 trutrac

Re: Gasket or silicone for rear end cover?

RTV, just make sure you let it cure properly before you fill the rear with oil.

Old

Jul 24, 2011 | 02:01 PM

#4

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Joined: Jun 2011

Posts: 2,036

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From: knoxville tn

Car: 86 IROC

Engine: 5.0 TPI

Transmission: 700-R-4

Axle/Gears: 2.73 open

Re: Gasket or silicone for rear end cover?

i hate RTV use a gasket

Old

Jul 24, 2011 | 02:11 PM

#5

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From: Boosted Land

Car: 92 Z28

Engine: Boosted LSX

Re: Gasket or silicone for rear end cover?

bead of rtv , let it setup before filling.

Old

Jul 24, 2011 | 02:37 PM

#6

$//<86TA>\\'s Avatar$

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From: Central NJ

Car: 86 Trans Am

Engine: 408 stroker sbc

Transmission: TKO600

Axle/Gears: Moser full floater m9, 3:70 trutrac

Re: Gasket or silicone for rear end cover?

Quote:

Originally Posted by rusty vango

i hate RTV use a gasket

RTV is great, you just need to follow directions.

Old

Jul 24, 2011 | 03:09 PM

#7

Supreme Member

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Re: Gasket or silicone for rear end cover?

RTV

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Old

Jul 24, 2011 | 07:09 PM

#8

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From: pawtucket RI

Car: 1986 iroc

Engine: alum. head 350 supercharged

Transmission: 6speed

Axle/Gears: ford 9in 3.90 35 spline moser axles

Re: Gasket or silicone for rear end cover?

i use rtv and the gasket or rtv only if i cant get one

Old

Jul 24, 2011 | 11:48 PM

#9

Supreme Member

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From: Elwood, IN

Car: 1986 camaro Sports Coupe

Engine: L31 350

Transmission: 89 700R4

Axle/Gears: 3.42 gov lock

Re: Gasket or silicone for rear end cover?

you can get a gasket from autozone and it comes with the RTV.

Old

Jul 25, 2011 | 12:09 AM

#10

UnderCover89TBI

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From: Manteca,California. Nor Cal.

Car: SOLD IT. Mopar guy only now.

Engine: gone

Transmission: gone

Axle/Gears: gone

Re: Gasket or silicone for rear end cover?

I normally use a gasket/sealer combination. But I have used just RTV also. And again let it cure before filling

Old

Jul 25, 2011 | 06:20 AM

#11

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From: Lawrence, KS

Car: Met. Silver 85 IROC/Sold

Engine: 350 HO Deluxe (350ci/330hp)

Transmission: T-5 (Non-WC)

Axle/Gears: Limited Slip 3.23's

Re: Gasket or silicone for rear end cover?

Quote:

Originally Posted by RMK

I'm fitting a Summit aluminum cover to my 10 bolt and it came with a gasket but the instructions say not to use a gasket and only to use silicone sealer. Just wondering what most people use when installing their rear end covers

I use a gasket with my Summit alum cover. Had a small leak at one point, but I snugged the bolts up a bit and that ended the issue.

JamesC

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