60-degree V6?

[GTRS Fiero]

I didn't want to clutter the other topic, so, I'll ask here:

This was installed on a Duke (for now) but will fit most any 2.5, 2.8, 3800, or other 60 degree V6.

I'm confused.  The 3800 is a 60-degree V6?  For some reason, I thought it was a 90-degree V6.

[fiero4.3L]

He did not say a 3800 is a v6-60.

3800s are 90.

[GTRS Fiero]

Not specifically, and certainly the 2.5 isn't.  I just wanted to clarify.

[Raydar]

I did not mean to imply that a 3800 is a 60 degree V6. It is, of course, 90 degree.
What I meant was that the starter should fit most everything in the 60 degree V6 family. 2.8, 3.4, 3400, 3500 and 3900.
If I do a 3900, I'll attempt to confirm that. I believe the blocks are the same in that regard. (This is NOT to include the "Hi feature" DOHC 3.6. Those are completely different.)

Sometimes I don't type too clearly. It's easy for me to be misconscrewed.

[Fierofool]

I always thought the 3800 series was a 60 degree, also.  I guess it was because of the bellhousing mating to the Fiero transmission.

Sometimes I don't type too clearly. It's easy for me to be misconscrewed.

That's better than getting missed, conned, and screwed. 

[GTRS Fiero]

Sorry.  My fault entirely.  At least it helped someone.

[GTXVette]

 so I guess the 3800   3800SC  are 90deg. v-6 with the fiero Bell shape, but is the 3.8 as found in Grand national and the 4.1 (also 90 Deg.) the same Bell as the 3800.

I know the 200r4 trans bolts to the 3.8, is that also the same For the 3800's ?

[Raydar]

so I guess the 3800   3800SC  are 90deg. v-6 with the fiero Bell shape, but is the 3.8 as found in Grand national and the 4.1 (also 90 Deg.) the same Bell as the 3800.

I know the 200r4 trans bolts to the 3.8, is that also the same For the 3800's ?

4.1? Is that based on the Buick 3.8 block? Seems like I remember hearing about it, down some dark hallway in my mind.

Regarding the 3.8 in the Grand National... I have no clue. I had a Starfire (Monza clone) with a 3.8. It had the BOP tranny pattern, but that was also a 1977 year model. The GN was obviously a decade later. I'm not sure what year they made the swapover to the "Metric V6" pattern in the RWD cars.

[GTXVette]

4.1 IS a Larger engine of the same family(3. Was in the Full Size cars, If the 3.8 RWD is a drop in for the Fiero it will be the same, Seems like the 90deg. has more performance parts than 60 deg. has availible. so IF they drop in it seems to be the wiser Choice.

[GTRS Fiero]

Why not go with a 4.3, then?  90 degree V6 family.  I believe it had iron heads and shared the same bellhousing as the 4.1.  Someone on here has one.

[fiero4.3L]

Buick 3.8 in the rwd platforms from about 1990 and earlier has the BOP pattern as well as the 4.1l.
The rwd 3.8 in the 94 and newer camaro/firebird uses the v6-60 pattern.
The 4.3l uses the sbc pattern since it is essentially a 350 minus two cylinders.

Some 200-4r transmissions have the sbc pattern but they are rare. There is a sheetmetal adapter with a small pilot bushing for the converter used when adapting between the two patterns.

[GTXVette]

  I am familier with the 200r4 but not v-6 engines, more of a Big block chevy guy, trying to learn GM v-6 architecture,  weight is everything so even the 4-cyl. is on the table as it looks like I may replace the engine since I have plenty of time.

[fiero4.3L]

I was mistaken about the bell adapter using a converter bushing. I think it is for converting to a v6-60 to support the converter pilot. The bell adapters just have washers the same thickness as the adapter to keep the converter at the same distance from the transmission as original.

I've found some high performance import 4 cylinders are heavier than the fiero v6-60. Not the 4.3l though as it is nearly as heavy as a ford 5.0l v8 with aluminum heads. The LS motors including the aluminum block ones are much heavier than one would expect. The v6-60 is a marvel of thin wall iron casting.

[GTRS Fiero]

The v6-60 is a marvel of thin wall iron casting.

Not exactly confidence-inspiring.

[fiero4.3L]

I mean to say it is very well designed for the output. The block is only about 100 lbs.