Hey everyone, I'm new here and was hoping for a little advice on engine mounts.
I've got 4.8l Vortec LR4 I'm swapping into my 1965 Cadillac (I know, small motor and a big car, but i got a smokin deal from family, and I'm just trying to get on the road)

The Original 429 big block Cadillac shares the same architecture as a lot of the later Cadillac and Oldsmobile big blocks, they bolt up on the front of the block, whereas the LS/Small Block Chevy/Big Block Chevy all bolt up in to middle of the block.
Does anyone know where I can find engine mounts/cross members that'll be what I need? Or am I going to have to fabricate and make it all myself?
Thanks!

 

I would look at how the LS relates to the front crossmember, then see which mounts are available that could be altered most easily to get you going.
The beauty of what you are doing is that further down the road you can drop a 6.2 in place of the 4.8 with very few changes!

 

Thanks! I'll be browsing the different parts websites i can find looking for anything that'll give me a drawing with dimensions. Otherwise, I've got a few ideas for how I'll weld in a new crossmember... And yes, half the idea was to drop an 4.8 in with all the accessories and harness, then someday swap in a 3rd Gen 6.0l vortec. Or, as you said the 6.2 (provided I'm able to dig deep enough into the savings!)

 

Hey, by that time the Gen 5 will be all the rage, and 6.2's will hopefully get cheaper(dreaming on here....). Don't forget, trucks also get 6.2's in the fancier versions, so their numbers will increase as careless folks wreck these expensive trucks.....

 

https://ls1tech.com/forums/forced-in...turbo-cam.html
read here.