77orange

Hello. Preparing for a TH350 to 200-4r swap and for the life of me I can't locate a replacement input shaft (torque converter) o-ring. I did see a source for a 700r4, but nothing for the 200-4r. Looking for the number or cross reference. Thanks.

Street Rat

Get on some transmission rebuilder sites and you should be able to find one. The one that I saw said that it fit the 350C, 200 4r and 700 transmissions.

By the way I think the o-ring is only needed for the lockup converters. I put a 200 4r in mine without a lockup converter. I didn't need the oring according to the builder.

johnt365

Hi,

I just looked through my stack of receipts and found it on the bottom. I bought mine from Transtar.

part# 13917
Reference # 8630049

If look on Summit racing site, they show it as compatible for 2004R

https://www.summitracing.com/parts/a...9/applications

Hope that helps.

John

77orange

Thanks - looks like the 08630049 by AC Delco is the it. Jim