quote Originally posted by fierodeletre: But as far as I can tell no 07 G6 GTP/GXPs with the High Feature engine were offered with a manual trans. This sucks. So we're back to square one, in that the only manual transAXLE available for one of these engines is the F40 found in the Saab 9-3 2.8T,

I'm going to commit heresy, here.

My mother in law has a CTS with the six speed automatic. The gear spacing seems to be, in a word, lovely!
If the six speed automatic transaxle gear spacing is anything like the longitudinal tranny (I haven't driven one, so I don't know) it should be really sweet in a Fiero.
(With a little bit of tuning to kill the torque management and tighten up the shifts, of course. THAT still sucks about the CTS.)

I really prefer manual trannies too, but if I ever do a twin cam 3.6, I'll probably do the automatic.

Anyone ever driven the 3.6 / 6 speed auto? Care to comment?


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Raydar
88 4.9 Formula IMSA Fasback..........................88 3.4 coupe -soon to be something other than red

Read Nealz Nuze! Praise the Lowered!

[This message has been edited by Raydar (edited 04-11-2009).]

The High Feature 3.6L DOHC LLT is a sweet motor, 302 horsepower (225 kW) at 6300 rpm and 272 lb·ft (369 N·m) of torque at 5200 rpm on regular unleaded (87 octane) gasoline.

It's coming to the Crossover SUVs, so it should be available in FWD bolt pattern, but it will be de-tuned and I don't expect a better manual transmission than the F40 any time soon, if ever.

quote Originally posted by jscott1: It's coming to the Crossover SUVs, so it should be available in FWD bolt pattern, but it will be de-tuned and I don't expect a better manual transmission than the F40 any time soon, if ever.

The port injected high feature V6's currently used in transverse applications do NOT have the older FWD pattern. They have an entirely new pattern that's the same for longi and transverse.

[This message has been edited by Will (edited 04-13-2009).]

So will the F40 6 speed bolt up to the 3.6L V6 or not?

quote Originally posted by Will: The port injected high feature V6's currently used in transverse applications do NOT have the older FWD pattern. They have an entirely new pattern that's the same for longi and transverse.

Has that been confirmed? When I looked at the pictures the new transverse autos look like FWD pattern to me.
But it's hard to tell. Either way I guess you could use an adapter plate to mate up an LLT to an F40

6T70:


F40:

[This message has been edited by jscott1 (edited 04-14-2009).]

wouldn't it be possible to take all the sensors and such out of the donor car, and basically make the computer think the engine is still in the original car... Im sure it would be pretty complicated, idk.. just a thought :P

quote Originally posted by jscott1: Has that been confirmed? When I looked at the pictures the new transverse autos look like FWD pattern to me.

They use multiple transmission cases. There were three different bellhousings for the 282. There are three different bellhousings for the F40. The new V6's have their own patterns and transmission cases are cast to match. Go to a GM dealership and check it out.

quote Originally posted by Will: They use multiple transmission cases. There were three different bellhousings for the 282. There are three different bellhousings for the F40. The new V6's have their own patterns and transmission cases are cast to match. Go to a GM dealership and check it out.

Let me see if I understand this... the new 6TXX transverse transmissions DO come in the old FWD pattern, but the ones used with the Twin Cam V6 are not in that pattern? I'm not sure if I could discern that from crawling under the minivan at the dealership.

As I said, that High Feature engine has a lot of potential for future swappers but adding an adapter plate into the mix makes it a bit less appealing.

However, didn't I see in a different thread that one of those F40 patterns might match the Twin Cam V6?

[This message has been edited by jscott1 (edited 04-14-2009).]

Correct. The 6 speed FWD auto is also used with "traditional" V6's like the 3800 and 3900.

The F40 has been built to bolt to the Ecotec, the 3900 and the High Feature engine.

quote Originally posted by Will: Correct. The 6 speed FWD auto is also used with "traditional" V6's like the 3800 and 3900. The F40 has been built to bolt to the Ecotec, the 3900 and the High Feature engine.

Thanks Will! There's a bit of good news in this. The High Feature V6 compatible F40 is probably rarer than Hen's teeth but at least there is a path through the wilderness.

So the F40 which is used with the 2.8 V6 in the Saab - do it just use a different bell housing? Is this bell housing available from GM?

It's almost certainly available... the real question is "Do you want to pay for it?"

There may even be a fourth bellhousing currently used on the 2.3 litre turbo engine in the 9-5... I reasonably sure that's a Saab specific engine and not an Ecotec; don't know exactly what the bellhousing is on that engine, though.