Paul Bell

iTrader: (9)

There can be another issue with some aftermarket pans:

In the pan rail of the transmission, there's a bleed off vent for the servo. This vent is a small hole in the pan gasket rail. The stock pan and gasket are notched to clear this vent. Some aftermarket pans and gaskets don't have this notch and the vent port gets covered up. There was even a GM bulletin noting this after they had some warranty and service issues caused by aftermarket parts.

It’s in the pan gasket surface just under the servo, the big round thing on the side of the case. This hole needs to be clear. Check your units guys! Covering this hole can cause the servo and clutch packs to hang up and wear out very quickly.

globalaccessacc

I, too, have the Summit trans pan, but mine is for my GMC Jimmy with a 4l60e. The extension is installed correctly, but there seems to be about a quarter-inch gap between the case and pan, preventing its installation. At first I thought it was caught on something, but now I am suspecting it may be a filter issue. On Blazers, Jimmys, etc., they use the stock deep pan. As you may be aware, there were two stock pans in production, a "shallow" and a "deep" version. The deep pan required the deep filter, which is plastic on the bottom; the shallow pan required a shallow filter, which is metal on the bottom. Do you happen to know whether your Summit pan required the deep pan filter or the shallow pan filter? I have been researching this forever and cannot find anything. I am thinking the deep pan was mainly used on trucks, that the majority of 4l60e transmissions use the shallow filter, and that the Summit pan therefore likely is designed to use the shallow filter.

Please help ASAP! Thank you so much!!!

Paul Bell

iTrader: (9)

Hey Global, welcome to LS1tech!

Usually, these pans come with a filter that'll fit the pan. None in the box?

Have you called Summit?

Sometimes these aluminum pans have cast in posts that the filter sits on. Does this pan have them?

jaycenk

iTrader: (1)

Love mine as well

CamaroRacing12

iTrader: (5)

never knew about this pan. Just ordered mine.

englundjd

thats a cool lookin pan

ABA383

iTrader: (1)

I've always used the "truck" pan that 96caprice is taking about. Thats about as low as I like to you use, and it holds more fluid without sacrificing ground clearance. The new owner has one of the those Summit cast pans on and it looks and seals great, but its definitely the low point when you look under the car. I'd definitely look into why you're experiencing high temps and fix that issue. I used to cruise everywhere for extended periods and still have neck snapping shifts...Good luck with everything..

--Alan