Engine Swap - 1971 4WD - Small block to Big block

[Mark Smith]

Does anyone make a cross member and engine stand kit that makes changing a small block to a big block easy? I've been told DIY 4 X 4 makes one but when I called they told me the kit was designed for a small block. There were no big blocks put in the 1971 4WD trucks so whatever I come up with will have to be aftermarket I guess. Please help me find someone that has done this or knows where I can get a kit or parts that will work. I was also told by DIY 4 X 4 the small block kit has been used for a big block application but the fit is very tight. Since I am installing a 502CID big block with a blower I am concerned about using an aftermarket deeper oil pan. If anyone can help me with cross member placement for firewall clearance and technical information I would greatly appreciate it. If you prefer to contact me via email, it is mksmith@trinitypetroleum.com My cell phone is 414-378-9234

[Yukon Jack]

Throw this over in the 4x4 section and you will get more response. Burt4x4 is using an aftermarket crossmember and with a body lift he only had to do a little firewall modification to fit his bbc. I used my stock crossmember and had major firewall interference even with a body lift. There are a few members who had to make no modifications to fit a bbc. Odd, but it does vary on what type of problems people have.

You can see more info on my bbc swap in my website listed in my sig.

[Mark Smith]

Thanks for the suggestion on putting this in the four wheel driver area. Seems odd some people would have a firewall clearance problem and other people wouldn't.