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Installing a 1978 400 in a 66 GTO problem

1K views 3 replies 3 participants last post by  Instg8ter 
#1 ·
Got a 1978 400 ready to go in to my 66 GTO. Purchased the adapter bar that the pontiac guys sell so that the motor mounts will line up.

My problem is there is too much spacing with the adapter bar in place and I can't get the engine in the chasis mounts.

Has anyone here installed a late model 400 into a earlier GTO. Can I get some advice on how you got the motor mounts to line up properly?

Thanks!
 
#2 ·
If it was mine, I'd remove the frame mounts, bolt them & the engine mounts to the block, then position the engine where you want it, try to get some small tack welds on the frame mounts, to hold 'em in place, then remove the engine & either weld the frame brackets or drill holes & bolt. Much easier to weld, if you can.
 
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