TH400 Dust Cover Fix not right...grind it? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

gotmud · 04-15-2009, 12:07 PM

I couldnt find a dust cover for my tranny in the junk yard so I bought one from Summit Racing. It doesnt fit right but I can tell that it should. Seems the cut out for the rms isnt deep enough. Anyone see a problem with taking a grinder to it?
Thanks

1968SWBBigBlock · 04-15-2009, 12:13 PM

No Problem - I spent an hour grinding mine - not impressed with the fit on that part

sleepertruck72 · 04-15-2009, 03:26 PM

I had to cut mine to fit. Its for a 700r4 but the starter was not letting it clear. I cut it, and it fit fine afterwards.

**Green Machine** · 04-15-2009, 04:23 PM

Does you engine have the one piece rear main seal ? The older covers for the two piece seal will need to be cut to clear, ran into this problem before. Our 1988 C1500 has a one piece seal and a TH400, that would be a direct fit if you are having the one piece seal size problem.

04-15-2009, 12:07 PM	#1
gotmud Registered User Join Date: Oct 2003 Location: Cumming, Ga Posts: 234	TH400 Dust Cover Fix not right...grind it? I couldnt find a dust cover for my tranny in the junk yard so I bought one from Summit Racing. It doesnt fit right but I can tell that it should. Seems the cut out for the rms isnt deep enough. Anyone see a problem with taking a grinder to it? Thanks __________________ Glenn Cumming, Ga (68 C/10 Fleetside LWB 307 (64 C/10 Fleetside Shorty Custom 350, with 73 donor parts aplenty) (2001 Porsche Boxster S - 168 MPH of fun) (2005 Chevy Avalanche Z71 1500)

04-15-2009, 12:13 PM	#2
1968SWBBigBlock Active Member Join Date: Oct 2006 Location: Ohio Posts: 1,643	Re: TH400 Dust Cover Fix not right...grind it? No Problem - I spent an hour grinding mine - not impressed with the fit on that part __________________ 1968 SWB 454 + .040, 490HP x 540 FT pounds of Torque 10-1 Kb Forged pistons, recon rods w/ ARP wave loc bolts 781 heads Ported with 2.19/1.88 SSTvalves Lunati 60204 cam, Micro Trol lifters, Ported Edelbrock Performer Rpm manifold armor coated, Pertronix Triple Strike Ignition Holley 770 Street Avenger carb,Headers armor coated Built by Watson Ruppel Performance in Sarahsville Ohio. Hardshift Tranny Built Turbo 350,TSI 10" 3000 stall 12 Bolt Eaton Posi 4.10 Richmond Gears moser axles 18.5" x 31" Hoosier Pro Street Radials ET Classic 5 Wheels - polished Power Steering, Power Brakes,Disc Brakes,Tach & Gauge Dash, Tilt,Factory Air (gone) Custom Paint & Body Work Special thanks to my wife, my son and my money tree

04-15-2009, 03:26 PM	#3
sleepertruck72 Registered User Join Date: Nov 2007 Location: Turlock California 95380 Posts: 2,075	Re: TH400 Dust Cover Fix not right...grind it? I had to cut mine to fit. Its for a 700r4 but the starter was not letting it clear. I cut it, and it fit fine afterwards. __________________ 72 C20 Longbed 05 1500 Z71

04-15-2009, 04:23 PM	#4
Green Machine Senior Member Join Date: Jul 2004 Location: Estherville, Iowa Posts: 3,371	Re: TH400 Dust Cover Fix not right...grind it? Does you engine have the one piece rear main seal ? The older covers for the two piece seal will need to be cut to clear, ran into this problem before. Our 1988 C1500 has a one piece seal and a TH400, that would be a direct fit if you are having the one piece seal size problem. __________________ 1968 C10 307 3spd Long Fleet ------ http://67-72chevytrucks.com/vboard/s...d.php?t=201103 1970 C10 305 Super T10 Long Fleet --- http://67-72chevytrucks.com/vboard/s...d.php?t=202285 1971 C20 383 TH350 Dana Posi ----- http://67-72chevytrucks.com/vboard/s...d.php?t=206894 2001 GMC Sierra 1500 C3 6.0



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