?'s for 454 swap in a 72 4x4 Blazer

[MAC67]

this is the 468 i dumped into mine , i pulled the 350 , kncoked in to divits with a small hammer for valve cover clearance and walla bb blazer , it didnt bother me custom hammering the firewall ha ha ha , you can barely see them because they are hidden by the valve covers mostly heres a couple pics , i know theyr not real good

[Yukon Jack]

You will find some people have put bb's in their trucks and K5's with little to no modification and others that have to do alot. I fell in the "alot" catagory. Burt4x4 has a recent thread showing his bb he just installed - he hardly had to do any modification. I don't know why it fits so easily for some and not for others.

Here are pics of the modifications I had to make. And this is with a body lift. Would have taken serious pounding with a hammer to make the necessary clearance for me and these are short valve covers.





Here is a link to my webpage showing more pics and info on my bb swap

Big Block Swap

[Big Bad 1972 Blazer]

Thanks guys for the pics, tips, & links (my keyboard is acting up now from drooling at your rides).

The valve cover clearance was what I was worried about. Based on what I see, I think once I yank the SB, I'm just going to break out the cutting wheel and create a little clearance in the firewall....no reason not to. I've got a really good idea as to how much to hack out based on everybody's feedback. Murphy's law states that I'll probably be on the "lots of work side", so I might as well build in extra clearance in that area. It looks like nothing that a little fab work can't cure...and it if that doesn't work, I'll break out the 5lb hammer