Whats the difference between a 454 Big Block, and a 454 Small Block?

Question

I am looking to begin searching out and building my dream car.
I am not sure if I can fit a 454 Big Block into a 70 chevelle. I can right?
If I can, what advantages will the Big Block give me over the small block (454)
Any additional information on what you guys think I can do with a 70 chevelle I will gladely accept.
I want to make it an awesome power car. I am not interested in it being a sleeper.
Thanks In Advance

Answer 1

I know alot about GM engines and what ci engine sizes come in. I have never heard of a 454 small block. You can definetly fit a 454 into a 70 chevelle in fact some of them came from the factory that way. If I was going for a bigger engine displacement I woud go with a 572 big block gm engine. I think that you should install an electronic exhaust cutout that way when you want to unleash all your horses you would have "open exhaust". Go with a cowl hood, white letter tires like goodyear with sexy SS stripes. Wish you the best luck on your dream car.

Answer 2

the big block will give you more torque than the small block and thats what you feel in the seat of your pants when you take off, the 454 small block is bored out so far that there is little wall space left between the pistons and thats not good at all, a 454 big block can be bored out to a 502 cu. in. with no problem down the road. The 454 big block will fit in your 70 chevelle with no problem whatsoever.

Answer 3

454 Small Block

Answer 4

You can put a 454 big block in your Chevelle......I did on mine. As of now the biggest small block is the LS7 which is a 427 that can pump out 500 hp. The 454 big block will give you alot of torque but not much on the top end/rpm. One thing though, make a list on what you actually want to do to the Chevelle, don't stray away from it because you might end up spending alot of money. Make a plan and stick with it. You will enjoy it at the end.

Answer 5

To the best of my knowledge a 454 small block does not exist. The largest chevy small block produced was a 400cu in.
In 1970 I believe the 396 (big Block) was available in the Chevelle.
The small block engine is lighter and will make tremendous power if properly put together with the right parts for what you want to do with it. Smaller and lighter makes for better handling and easier on your suspension.
Big blocks are just incredible with potential for raw brute power and torque.
I would love to get a Chevelle to work on as a project car someday.

Answer 6

there is a big difference between the two, the big block is a beefy, gas burning power producing work of art, and the small block is... well non existent. i ma sure that you can find kits for any of the obstacles that you may encounter with that project. you may have to beef up the suspension to compensate for the additional weight...