Guys, it HARD BLOCKED, VERY LITTLE TO NO WATER PASSAGE, depends on how long we want the block to last.


W only get 60-70 runs out of a block anyhow.......which is PLENTY



On out small block SB2.2 stuff, our cylinder walls are routinly 0.185 thick, and that is with a full water jacket and no hard block.

sorry, missed the hard block part man if you put in a 4.2L stroker kit you could get some good displacement. Close to 265 cubic inches I think.

i like to see the MINOR port job on those heads and how do you get that much compression is this whit dome piston or from stroking

MOSTLY, it is from reducing the chamber volume down to 36-46cc and useing a VERY small dome to bring the compression up.


In the past (10 years ago) we would just run a LARGE dome to make up the compresson but we have found that we can make more power with a small chamber and a slightly domed piston due to better flame travel.

The smaller combustion chambers also help in the pressure recovery of the cylinder.

it'* a bit of work but you can take a rough machined TA perf 4.0 bore block and machine the 60* bellhousing etc on and end up with a 5.2L Talldeck 3800...

thank god you can weld alloy blocks easier than iron....

weve alway used reworked stock blocks, never heard of TA Performance.

I take it that their block is for series 2???

It looks like they only offer blocks and parts for the turbo 3.8L for GN'*
Speedster, do you have any pics of your engine work? I am highly interested in anything you do to a L36.

I would be impressed to see any n/a 90* gm v6 build pics.

If you got some spare time brother, come to Memphis. We can use my car as a guinea pig