can you supercharge a 3.8 v6?

[chevy2480]

No you cant. The Grand National motor is not the same as na 3.8. While they both share the same heads and block. The GN motor has different pistons, crank , harmonic balancer, flexplate also block would need to be drilled for oil return. An a true GN block at least the good ones would have 109 casting. If your block has a 109 casting then you can build that block into a gn spec bottom end. This block was only in 86-87 Gm cars no other year had the 109. The older turbo 3.8 also had different internals.

 

[username]

do you think its possible to get a grand national intake on my 3.8 since its the same motor then my car can be fuel injected if i do that right?

No you cant. The Grand National motor is not the same as na 3.8. While they both share the same heads and block. The GN motor has different pistons, crank , harmonic balancer, flexplate also block would need to be drilled for oil return. An a true GN block at least the good ones would have 109 casting. If your block has a 109 casting then you can build that block into a gn spec bottom end. This block was only in 86-87 Gm cars no other year had the 109. The older turbo 3.8 also had different internals.

I'm confused, if the heads are the same why would'nt the intake fit? Here is a list of blocks/heads production casting numbers for the 231 http://www.gnttype.org/general/v6hist.html

 

[dogsht]

Wasn't there 109 castings used for some 4.1 applications and outside of 86/7?

 

[chevy2480]

do you think its possible to get a grand national intake on my 3.8 since its the same motor then my car can be fuel injected if i do that right?

No you cant. The Grand National motor is not the same as na 3.8. While they both share the same heads and block. The GN motor has different pistons, crank , harmonic balancer, flexplate also block would need to be drilled for oil return. An a true GN block at least the good ones would have 109 casting. If your block has a 109 casting then you can build that block into a gn spec bottom end. This block was only in 86-87 Gm cars no other year had the 109. The older turbo 3.8 also had different internals.

I'm confused, if the heads are the same why would'nt the intake fit? Here is a list of blocks/heads production casting numbers for the 231 http://www.gnttype.org/general/v6hist.html

When i said no you cant i meant you simply cant bolt it on and expect it to work. It will bolt on but motor internals wont last.

 

[username]

Wasn't there 109 castings used for some 4.1 applications and outside of 86/7?

I have no idea,I'm inclined to think no because a 4.1 to my limited knowledge are 14 bolt pans where as 3.8 "109" casting is a 20 bolt pan

 

[Elco Slimm]

I dont see why not

 

[chevy2480]

Wasn't there 109 castings used for some 4.1 applications and outside of 86/7?

109 blocks where only used in 86-87 model yrs in both turbo and non turbo and all 109 blocks where 3.8.
The 4.1 was a motor all on its own with a whole different casting #
now the heads on a 109 which where a 445 casting was used back to the late 70's early 80's i believe

 

[chevy2480]

Wasn't there 109 castings used for some 4.1 applications and outside of 86/7?

I have no idea,I'm inclined to think no because a 4.1 to my limited knowledge are 14 bolt pans where as 3.8 "109" casting is a 20 bolt pan

And you are 100% correct.

 

[LSCustoms]

do u know of a website were i can find a c series like summitracing.com or sumthin

yes you can and there r tons of ways to do it...

[youtube]uK5pYVBcZ2I[/youtube]

 

[LSCustoms]

or you could turbo it... but there r many ways to supercharge it. you could use the kit from a v8, depending on which exact motor/block you r using and what its going in, run it at 6-8lbs should be hot