stage 1 stage 2 regular 4.1

[justin84]

I am in talks with a fella in Mi that has some "extra" buick motors. What I have been told is that there are 2 stage 2 complete engines, a stage 1 block with crank and heads, and a "few" 4.1 complete buick engines.

My question is what are the differences between the whole lot? Were the stage motors production motors or???

What is the significance of the regular 4.1?

I am new to the 4.1 aspect all together and have always skipped the threads about them simply because of the cost of the stage engines.

Basically, what's the big deal???

I want to know before I drop a few hundred dollars.....

 

[GNBRETT]

http://www.turbobuick.com/forums/stage-ii-tech/35429-general-stage-questions.html

 

[justin84]

Thanks for the info, still....more info would be nice. The regular 4.1??? Is it anything special? Can I just drop 3.8 stuff in it???? What can be done with this?

 

[bison]

Thanks for the info, still....more info would be nice. The regular 4.1??? Is it anything special? Can I just drop 3.8 stuff in it???? What can be done with this?

Production 4.1 block is not a good design. They fail at the deck surface. I wouldnt be concerned under 500hp though. More than that its a matter of time till it breaks. Some will argue with me on this but its the truth. You need a set of pistons for the 4.1 which will be upwards of $800. Then you need to re-balance and be sure to use the correct head gasket. Stage blocks are the way to go if you want to run a large bore Buick. Cost to build one is considerably more than just a stock block engine. The stage 1 4.1 is a strong block but have a lot of problems cracking at the side plugs. There are remedies for that though.

 

[justin84]

Now we're talking! I have a guy that wants my super coupe for these. I'm interested in re-sale and maybe putting one in the G.N. thats getting passed down to me now. What do you think Bison???

 

[turbobob924]

let me know, I may be interested in something or talking to the guy directly.

 

[justin84]

Hey, will do. I'm only slightly a fool tho, I will be getting these. I'm not gonna miss out on this one. I never get the good deal, it's my turn!

 

[bison]

Now we're talking! I have a guy that wants my super coupe for these. I'm interested in re-sale and maybe putting one in the G.N. thats getting passed down to me now. What do you think Bison???

Id grab them all if the price is right. Your not going to get hurt if their only a few hundred $. A good stage 2 block is worth $2000 by itself. Im sure the SC isnt worth more than $2k.

 

[gnxtc2]

Going with a Stage 2 OFF-center block, you can swap over all the 3.8 stock accessories. The off-center blocks, the rods are not centered on the pistons.

The ON-center blocks, the cylinder banks are shifted around .120 fore and aft to center the rods on the pistons. The on-center blocks are supposed to handle more HP due to the location of the rods.

Stage heads are totally different animal than production stuff. The stage heads require a different cam, headers and intake.

The bottom line is that a Stage 2 block has extra head bolts around the bore and extra fasteners for the main caps. The blocks also have different oiling.

Here is some info:

Intake Photo Guide

Cylinder Head Photo Guide

Block Photo Guide

Billy T.
gnxtc2@aol.com

 

[FlintBuick4Life]

More power woot:biggrin: I`d get them all if there cheap and not blown-up.