what's the largest V8 that you think will fit in the engine bay of an 89YJ? My brother just gave me a 454 and seems like something crazy to do so looking at the options.
thanks
Mark
thanks
Mark
Big Block in 89 YJ
- Thread starter campbellmc73
- Start date
I suspect it will fit but you'll need hugger headers.
If it was me I'd put a 350 in there with a Holley Sniper EFI setup.
If it was me I'd put a 350 in there with a Holley Sniper EFI setup.
Yeah, hard to beat free.
I'm pretty certain it will fit, it's just going to be a very tight fit.
Will it fit? Probably. It will be very, very tight. You'll likely run into clearance issues with your accessories (A/C components, power steering pump, alternator, etc.) steering components, exhaust, firewall, etc. The engine is longer, wider, and heavier compared to a SBC. Keep in mind that there is less aftermarket support on things such as headers, engine mounts, adapters, and such for BBC's into a YJ as well. You may be able to get off the shelf parts, such as our engine mounts, and modify them to work for the BBC rather than fab your own. We don't currently offer any mounts for that swap. Of course, if you're an experienced fab guy you've got it no problem.
It's been done before, so the short answer is yes it can. It's up to you to decide if the free engine is worth the additional time, labor, and potential costs.
Best of luck whichever way you decide to go! Feel free to reach out with questions and we will help where we can.
-Dustin
It's been done before, so the short answer is yes it can. It's up to you to decide if the free engine is worth the additional time, labor, and potential costs.
Best of luck whichever way you decide to go! Feel free to reach out with questions and we will help where we can.
-Dustin
UnkoMaka
New Member
I agree 100 percent, I did one in a 93 yj, clearance, what clearance?
A small block would be better, with a efi ste up. Novak has all the goodies you need to make it happen. Also with the big block you will have to beef up you front suspension. Good luck
Stoopid Jeep
YJ Enthusiast
yes. you can fit a bbc in a yj. I recently saw a YJ with a 396 in it (same physical size as a 454).
I would sell the big block and buy a good 350, much easier swap, but with enough time and money, you can basically fit any engine in any vehicle.
Just for funzies, here's a blown V8 in a Mini Cooper.
I would sell the big block and buy a good 350, much easier swap, but with enough time and money, you can basically fit any engine in any vehicle.
Just for funzies, here's a blown V8 in a Mini Cooper.