Cascade Crew

RSFreak · Posted: Mon Aug 18, 2008 6:51 pm Post subject: pre '86 block with '86 tranny

I just purchased a long block 350 for my '86 T/A. I believe that '86 was the first year for the 1 piece rear main seal. This block is older and has a 2 piece rear main seal. Do I need an adapter to run my '86 700R4? I think I had heard that before... Confused

rjmcgee · The Hammer Joined: 08 Jan 2004 Posts: 2328

Tranny is the same, but you may need a differant flex plate depending if your 86 was 1 piece or 2 piece.

Twilightoptics · Posted: Mon Aug 18, 2008 8:06 pm Post subject:

'86 was hit and miss. '87 was standard as 1 piece rear.

You'll have to look. Flexplates are different because of the different crank. Just get the proper tooth flexplate for the old style (2 piece) and you're good to go. Everything else bolts up perfect.

RSFreak · Posted: Mon Aug 18, 2008 10:54 pm Post subject:

Sweet! I got the flex plate with the engine so I should be good to go, right? Smile

Twilightoptics · Posted: Tue Aug 19, 2008 6:26 am Post subject:

turbo_jimi · Posted: Tue Aug 19, 2008 7:51 pm Post subject:

guess i didn't see this post... Embarassed

RSFreak · Posted: Tue Aug 19, 2008 9:34 pm Post subject:

turbo_jimi · Posted: Tue Aug 19, 2008 10:02 pm Post subject:

lol...i'm talking bout the post i made on the back porch... Laughing