3.8 liter block

[xgolferdude]

Hey guys, Just got my first turbo buick and im stoked!!!!! My question is a little weird so bear with me. Is the block of a turbo buick a 60 degree or a 90 degree. thanks for your help very much!!!! The boys at WilCap think its a 60 degree but im not sure and need to be certain. Hell im not even sure how to tell the difference. lol So any help is awesome!!!!!

 

[jpratt]

here is some good info on the blocks here http://www.gnttype.org/techarea/pictureguides/blocks/blockguide.html

 

[Blazer406]

Hey guys, Just got my first turbo buick and im stoked!!!!! My question is a little weird so bear with me. Is the block of a turbo buick a 60 degree or a 90 degree. thanks for your help very much!!!! The boys at WilCap think its a 60 degree but im not sure and need to be certain. Hell im not even sure how to tell the difference. lol So any help is awesome!!!!!

Definately 90 deg.

the 60 deg motors have real narrow intakes.... these are the 2.8L, 3.1L, 3.4L, 3400, and 3500 V6 motors. the 3.8L is of the 90 deg variety.

Welcome to the board.

Read alot.... and ask questions if you can't find what you need. We are here to help.

 

[49-blues]

The old 3.8 found in jeeps and such were oddfire which i believe were 60 degrees but the newer 3.8s are even fired and 90 degrees.

 

[Blazer406]

The old 3.8 found in jeeps and such were oddfire which i believe were 60 degrees but the newer 3.8s are even fired and 90 degrees.

I think they have always been 90 deg.... the oddfire engines do have at least a different crank.... and maybe the rods.....(not sure on the rods).... I might be confusing that with on center and off center (totally different).

 

[49-blues]

The oddfires do have a different crank and i think fire at 60 and 120 degrees and are all off centerblocks.

 

[Blazer406]

I see the confusion now....

I assumed the OP was referring to the angle of the cylinder banks.... this is the common "90 deg" V6... or "60 deg" V6... has nothing to do with degrees between firing...

Sorry for injecting confusion.

 

[49-blues]

I thought it has everything to do with the way the engines fired thus the rougher idle. The cranks use a common journal for the rods like a chevy-i did alot of research on them and then gave up on my idea of a off centered oddfired stage2 cranked 4.1 stroker production block. that i got from a stage2 oddfire busch motor.

 

[Blazer406]

The angle between the cylinder banks... to my knowledge is normally 90 deg.... like the 350 chevy... 454.... 4.3..... 3.8... etc. GM had a need for a more compact... more narrow engine... so they tightened up this angle to 60 deg.... which made the engine alot more compact.... hence the 2.8 L was born....

I really don't have a clue about the even fire.... odd fire or even if the OP was referring to the degrees between the engine firing...

Again... sorry if I injected confusion.

 

[xgolferdude]

thanks guys thats what i needed to know. I've found what I needed. Now I'm almost ready to do the six speed swap. thanks yall