L82 question...
Melting Slicks
Joined: May 2006
Posts: 3,438
Likes: 41
From: Raleigh NC
St. Jude Donor '13-'14
No condescension taken LeMans, I'm enjoying this thread!
As part of a complete referb, I put a new oil pump in her last spring. When I was installing the oil pump I noticed the rear main cap only had two bolts.
That is what sparked my curiosity. It wasn't even the engine designation per se, it was my recollection that most heavy duty GM anything, back then that shipped with a manual used a four bolt, the two bolts were usually used for Automatics. I thought that this may have had a trans swap. That's when I started to stew about the appraisal.
Those were dark days for GM back then, I wonder if a few stinkers snuck through...
As part of a complete referb, I put a new oil pump in her last spring. When I was installing the oil pump I noticed the rear main cap only had two bolts.
That is what sparked my curiosity. It wasn't even the engine designation per se, it was my recollection that most heavy duty GM anything, back then that shipped with a manual used a four bolt, the two bolts were usually used for Automatics. I thought that this may have had a trans swap. That's when I started to stew about the appraisal.
Those were dark days for GM back then, I wonder if a few stinkers snuck through...
Safety Car
Joined: Jun 2004
Posts: 4,364
Likes: 221
From: Beecher Illinois
As mentioned above the front cap was only 2 bolts, as was the last cap at the oil pump(as seen in my pic)
Did yours have the windage tray?
Thread Starter
Instructor
Joined: May 2011
Posts: 197
Likes: 4
From: Rochester New York
Did you take your car apart just for me??? HA!
I assumed that ALL the caps would be 4 bolt... look at me learning something! Since my engine work is all finished for the foreseeable future, I'll keep it all put together and take it on faith. I'm glad I got schooled on this here and did not jump all over the dealership. And yes, it does have a windage tray.
Thanks guys!!!!!
I assumed that ALL the caps would be 4 bolt... look at me learning something! Since my engine work is all finished for the foreseeable future, I'll keep it all put together and take it on faith. I'm glad I got schooled on this here and did not jump all over the dealership. And yes, it does have a windage tray.
Thanks guys!!!!!
Last edited by ThePabst; May 11, 2015 at 03:19 PM.
Racer
Joined: Nov 2012
Posts: 340
Likes: 2
From: Port Washington WI
What about BBs?
Did the BBs have 2 bolt front and rear caps or were they 4 bolt all the way through? Just curious. My '69 L71 block came back from the builder all prettied up with 4 bolt caps and studs from one end to the other. I never looked at it's stock set up before it went out.
Did you take your car apart just for me??? HA!
I assumed that ALL the caps would be 4 bolt... look at me learning something! Since my engine work is all finished for the foreseeable future, I'll keep it all put together and take it on faith. I'm glad I got schooled on this here and did not jump all over the dealership. And yes, it does have a windage tray.
Thanks guys!!!!!
I assumed that ALL the caps would be 4 bolt... look at me learning something! Since my engine work is all finished for the foreseeable future, I'll keep it all put together and take it on faith. I'm glad I got schooled on this here and did not jump all over the dealership. And yes, it does have a windage tray.
Thanks guys!!!!!
Thread Starter
Instructor
Joined: May 2011
Posts: 197
Likes: 4
From: Rochester New York
I seem to recall Chevy small blocks having two OR four bolt caps depending on what the General put them in. But I'm old and suffer from C.R.S. (Cant Remember, uh, Stuff)
I do recall helping with a rebuild on a 350 in our 76, 1 ton tandem axle tow truck when I was a kid... It was a 4 speed, with a huge clutch and a PTO for the winches... It was 4 bolt end to end like you have. That I DO remember.
I have been spending way too much time working on little aluminum four and six bangers.
Last edited by ThePabst; May 11, 2015 at 06:48 PM.
Melting Slicks
Joined: May 2006
Posts: 3,438
Likes: 41
From: Raleigh NC
St. Jude Donor '13-'14
I do believe the 427s that received 4-bolt mains did have them on all 5 bearing caps, and the L71 would have been one of them.
