The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post

MARKDTN · 03-08-2018, 01:13 PM

I would have yours built instead of getting another. You know it fits, you know a little about it. It has to come out anyway, just build it. But you might service it and it may go a bit longer. Could be the filter is clogged. I would at least pull the pan and take a look.

Another tell-apart is a TH350 has the vacuum modulator at the rear of the trans while a TH400 has the modulator on the right side towards the front.

03-08-2018, 01:13 PM	#9
MARKDTN Registered User Join Date: Jan 2011 Location: Chattanooga, TN Posts: 2,200	Re: How to identify auto tranny type? I would have yours built instead of getting another. You know it fits, you know a little about it. It has to come out anyway, just build it. But you might service it and it may go a bit longer. Could be the filter is clogged. I would at least pull the pan and take a look. Another tell-apart is a TH350 has the vacuum modulator at the rear of the trans while a TH400 has the modulator on the right side towards the front. __________________ '83 K20-TPI '73 C10 '79 C10-ex-diesel(SOLD) '07 Tahoe(Son driving) '14 Suburban-DD '71 C10-current project