[88K1500TEX]

There is a difference between 454 and 350 or small block fo sho..

Cant say on the diesel.

 

[88K1500TEX]

I guess thats why i took a factory 454 out and put in a 350 there were different mounts

Now the truck i did that on was 2wd but there was a for sure difference.

As a matter of fact when i tryed to sell the mounts some know it all popped in on how i was trying to rook people advertising them as BB mounts and there wasnt a difference.

\ But in the end after calling some dealerships the guy ended up buying my stands so he would have the right ones for his conversion.

Not sayin one wont work for the other but there is a difference and i belive it is in the height of the engine .

Says here that the "frame side mounting pattern on 1 tons originally equipped with the 454" are different. All others are the same.
Travs

When i swapped over to a SB i had to redrill the bottom hole when i changed over to SB Stands.. I Guess The ClamShells Are The Same But There Is A Noticeable diff. in the stands. my trans never moved for the swap and im running the same BB exhaust on Factor Sb Ex Manifold Stainless Headers

 

[88K1500TEX]

Also xsintrick1

If i can provide pictures of the difference you going to mail me 100 cash or perfer to paypal it to me?

 

[88K1500TEX]

Much Debate On This Same Issue.
http://67-72chevytrucks.com/vboard/showthread.php?t=143493
Big Block 73 Has My Old Mounts And I Know For A Fact There Is A Difference From When i Took My 85C20 And Swapped From Factory 454- 350

I Changed over to 1/2 Sb Stands Redrilled The Bottom Hole And Thats It Using Same Trans Location Same Exhaust Pipes On Sb Header Style High Heat Manifolds.


Not Trying To Be A Smart Ass Or Know It All But There Is A Difference And Ive Held Both Stands In My Hand And Looked Them Over As The Guy That Purchased Them From Me Pic's Show Compared To His Sb Mounts.

So GMC Truxle You Stand Corrected And xsintrick1 "You Better Put That Money In My Hand Im My Hand"