Quick rear seal question

[midwestls]

I've got a 73 or 74 350 and was just wondering if all these, around these years used a 2 piece rear seal? I dont have the motor here right now so I can't look at it and I'm trying to order parts for it and just want to be sure. Thanks for any help.

 

[megaladon6]

i'm 99% positive that they're all 2-pc seals. i think they didn't have a 1-pc till the 80's.

 

[85 Cutlass Brougham]

Yes, it's a 2 piece seal engine. I think it was 1986-87 when GM phased in the 1 piece seal blocks in all applications. These blocks are also easily identified by the fact that they have bosses in the valley for the roller lifter spider ( although not all are equipped with roller cams).

 

[midwestls]

Ok cool, thats all I needed to know. Thanks again guys