Bellhousing bolt pattern

[Greg55_99]

Is the bellhousing bolt pattern on the new GM 60* engines the same as the old ones?

Greg

[bszopi]

Yep.

[Greg55_99]

Does that include the new Global 3.6L and 2.8L V6's?

Greg

[geoffinbc]

Yes and Yes

[Greg55_99]

All righty then! How about the Ecotech 2.2L?

Greg

[sharkey]

as far as i know, the 2.4l and 2.2l ecotec share their own bolt pattern, but im not 100% on that.

as far as i know, the 2.2l (non eco) 2.3l, 2.5l, 2.8l, 3.1l, 3100, 3300, 3.4l, 3.4l dohc, 3400, 3500, 3800 and 3900 all use the small gm bolt pattern.

[geoffinbc]

Ecotec is way different. And I dont even think it is the same as the 2.3L and 2.4L engines. I am working on a bellhousing article but I cannot get pics of the Quad 4 family or Northstar family engines

[sharkey]

well, i can tell you the northstar family uses 4 bolts in the bellhousing. also there is one longer bolt and if you put in in the wrong hole you go into the waterjackets and ruin the block.

[v6h.o.]

Ecotec is way different. And I dont even think it is the same as the 2.3L and 2.4L engines. I am working on a bellhousing article but I cannot get pics of the Quad 4 family or Northstar family engines

Yes the ECOtec family of engines does NOT share the same bellhousing pattern as the old 2.3/2.4L Quad/twincam engines.

I have a ECOtec engine sitting in my garage i picked up.

[Will'sFiero]

Ecotec is way different. And I dont even think it is the same as the 2.3L and 2.4L engines. I am working on a bellhousing article but I cannot get pics of the Quad 4 family or Northstar family engines

Northstar is very close to the same as the V6/60's.
The bolt at the lower right corner has been moved up and in... a total distance very close to 1 inch. When using a 282 on it, you get 4 bolts, but one of the unbolted holes has a dowel pin, so there's really only one missing, and that is the one in the middle on the left side which is not in the block because it would go into the water jacket if it were drilled there.

[Greg55_99]

Okey Dokey...

Can anyone confirm that these motors have the 60* bolt pattern since they all use the GM 4L30-E Transmission

Cadillac Catera 1997-2001 3.0L engine; BMW 318i 1992-1999 1.8L / 1.9L engine; BMW 323i 1997-1999 2.5L engine; BMW 328i 1996-1999 2.8L engine; BMW 528i 1996-1999 2.8L engine; BMW Z3 Roadster 1996-2000 2.5L / 3.0L engine

Greg

[geoffinbc]

If the 3.0L in the Catera is the GM 90* V6 then yes it is the same. As for the beamer engines I am not sure of that at all.

Here is the article I am working on. http://members.shaw.ca/betterthanyou...t_patterns.htm you can see the 3.0L listed as the Small Coperate Pattern

[RidgeRunner]

I thought the 3.0L was the Opel 54 degree engine.

[sharkey]

gm had a 3.0l 90 degree engine, it was replaced by the 3300 if i rmember right.

i doubt the beamers have a gm bolt pattern. the 4l30e was built by gm for imports specificly, and to my knoledge, didnt go behind a gm motor. the bellhousing on the 4l30e is removable, so its changed depending on what motor it went behind.

[Piper106]

Nice work on the bell housing page Betterthanyou.

I think what is commonly called the Chevy/Pontiac 'Iron Duke' four cylinder has had two different bell housing patterns. When this four cylinder first came out for the Chevy II in 1963 or 1964 it had the small block chevy V8 pattern. When it was used in Jeeps in the early 1980s it still had the SBC V8 pattern. When it changed to the GM small pattern I do not know.

I note that you do not show the Chevy/GMC 230, 250, 292 inline 6 cylinder engines at all on the bell page. These engines have the Chevy V8 pattern on the flywheel end. The mid-1960s Pontiac OHC straight 6 cylinder had the BOP pattern.

Piper106