Hey guys,

What is better, a 427 or a 350?

What are the pros and cons of each?

Is there a 400 block?


Thanks =)

:hail: :hail: :hail:

 

427 small block?

The 427 is an amazing engine. The 350, well its not unusal and it seems to work since so many people have it. And thats why I probably dont have one.

 

what is the link to gm proformance parts?

thanks:hail: :hail: :hail:

 

Click here.... Personally, the more displacement hat can be safely attained from a block... the better.

 

Are a 427 and 350 the same block just bored differently?


thanks for the link :hail: :hail: :hail:

 

One must remember, there is no substitute for cubic inches. The only concern is whether you are using the standard drive terrain components. If not, then the 427 is going to be WAY more powerful to the butt-o-meter. How much are we spending on this toy? That is the next question.

 

The only factory 427 is an older big block motor. It is not the same block as a 350 at all. It can be put into one of these cars, but it is not the best choice for someone who has never done a motor swap. If I were to do a big block swap, I would not use a 427; I would make it at least a 454. There's no point in going to all that trouble and not going all the way.

It is also possible to take a small-block 400 block, bore it .030" over, and put a 4" stoke crank in it, and come up with a 434 that way. GM of course has never done any such thing so don't waste any time looking through their catalogs for it.

 

Donovan makes a 427 sbc and I think World Products was going to produce one too.

 

I was talking to some people and they were saying a 350's buttom end is stronger than a 400 or 427, is this true?

thanks for all your help:hail: :hail: :hail:

 

Here is the deal, most people say that the 350 4 bolt block is stronger than the 2 bolt 400. This is true, but there is also a 4 bolt 400 block that is quite strong, just as strong as the 350. Some people say that the 2 bolt 400s with a splayed cap are stronger than a 4000 4 bolt, but I disagree. And, Hardcore Racing makes a kit for the 400 mains that is a stroker kit in 415 and 427. But, just because the stroke is bigger doesn't mean that there is more horsepower to be made. In fact, a longer stroke normally dictates more torque, something that you may want to steer clear of unless you are changing your drive terrain. All of this depends on 2 things, the money you want to spend, and what characteristics you want the car to have. For all out brute force, go big. :hail:

 

Personally, I like the 427 SB. 350's are extremely common and I like to be different. That's why I'm going with the 427. I'm either going with the Rocket Block (400 mains-4.125" bore) and putting a 4.000" stroke custom crank or going with the Dart Little "M" and using a callies or cola crank. I'm still debating which features I like (raised camshaft, BB cam bearings) and which one would be better for my application.

 

Yeah its true because the 350's piston has less surface area compared to the 427

 

I understand that.

HE also said that the main cap bolts went threw the block and that is why the bottom end were weaker. Does that make sense?

thanks:hail: :hail: :hail:

 

My 4 bolt, which is a 74 truck motor, the bolts do not go all the way through the block. If they did, I think you may have some oil leaks down the line as the oil will weep through the threads of your bolts.

 

If the question of money is not a concern than you should go with the 427."there is no substitution for displacement" If money is a concern you can pick up an old four bolt 350 for pretty cheap do a few mods and make a really good reliable engine. The 427's I don't here have a very long shelf life and without forged this and that break. The TRUE question is how big is your wallet and desire man.
Either way you can make a monster motor....good luck
P.S. Motown makes a 427 sbl with 500hp and 500 ftlbs with a warranty

 

I like teh 427 but I dont know if my wallet could handle it.

Thanks for the input =)

:hail: :hail: :hail: