I guys, I have an 84 camaro and would like to know which Big block can i put under the hood to have the bestresult in HP/Torque. If someone can also tell me which one can be installed without too much mods. Thanks in advance! :lala:

i've been loking in to this swap my self, but any way all bbc are pretty much the same size and weight, so go with a 454.

did you know anybody that has already done that mod.

I've thinkin about a 400 bbc!

Is that something that can be easily done?

There are a bunch of people who post on this site with big blocks in their cars. Do a search.

They're all the same physical size. Either it is a BBC, or it is something else, as far as fit is concerned.

There is no BBC comonly referred to as a "400", although 70-71 full-size cars with 402 motors had "400" badges and the motor was called a "400 4-barrel" at the time. A "400 2-barrel" was a small block.

Big blocks come in 366, 396, 402, 427, and 454 in vehicles; and you can get a 502 in a crate over the counter at GM. Why waste all that time, money & effort on a "400", and leave all those possible cubic inches on the table? Use a 454 rather than a 396 or 402 if you're looking at strictly used ones.

My own advice would be that if you don't even know what a big block is, and what sizes they come in, you're not ready for such a swap yet. Do some more research, look at a few cars with big blocks in them, get used to the ideas involved.

Sorry for your time!

Just wanted to know if there's so much mods to do with tranny and all that stuff!

Thanks a bunch!!!! :lala: :rockon:

Big blocks & small blocks have the same trans bolt pattern, and the same engine mounts. THose are 2 things at least that don't have to change. The 454 is externally balanced however, so you will need an "unbalanced" flywheel or flex plate if you use one of those.

I think RB's point is that putting a big block into a 3rd gen is a big project. But, putting a 400 small block into a 3rd gen is much simplier (although not without obstacles).

For all the effort it would take to put in a big block, putting in the smallest one (I won't count the 366, because it's strictly a truck engine) doesn't make much sense - especially if you don't have the engine right now. You could put in a small block with the same 400 cid displacement, with about 150 fewer pounds, for a lot less work and you'd end up with more performance. Or, go with the cubes of the larger BBC's.

Very few of the big block 3rd gens are daily drivers - wonder why? If you intend to drive this car on a regular basis, the larger SBC's make a lot more sense. If you drive it a lot, then the 350 or 383 are the ones that make the most sense (and a 350 is the best from a power/ease standpoint).