2.8L/3.1L AND 3.8L FWD same bellhousing pattern?

[Mark Romans]

Shannon;  Aurora doesn't come with manual.  Call Carroll Shelby to see what
it takes to make it fit.  His new sports car will use an Aurora V8 and rear
wheel drive.  I'd just go ahead and get a Northstar,  costs the same,  half
a litre bigger engine,  300hp instead of 250hp.

Mark.
-----Original Message-----
From: Shannen Durphey <shannen at mcn.net>
To: diy_efi at efi332.eng.ohio-state.edu <diy_efi at efi332.eng.ohio-state.edu>
Date: Sunday, December 14, 1997 8:28 PM
Subject: Re: 2.8L/3.1L AND 3.8L FWD same bellhousing pattern?


>
>
>Terryk wrote:
>
>> Ok, we have three yes (same) , and two no's (different).
>>
>> I wondered if the 3.8L in the Camaro was the Buick or the Chevy. Why not
>> the Chevy? But that would require an adapter plate too. It would fit a
>> little better though.
>>
>> TK
>>
>> ----------
>> > From: Sketch <sketch at r34h11.res.gatech.edu>
>> > To: diy_efi at efi332.eng.ohio-state.edu
>> > Subject: Re: 2.8L/3.1L AND 3.8L FWD same bellhousing pattern?
>> > Date: Sunday, December 14, 1997 11:11 AM
>> >
>> > > I thought exactly the same thing, but a guy that does Quad 4 swaps
said
>> he
>> > > ran into that problem. The bolt patterns were different. I am
assuming
>> that
>> > > he is right. Maybe someone can nail this down for me. I'm using an
>> Isuzu 5
>> > > speed right now. Works fine, but the gears are too low. From 6500, I
>> drop
>> > > to 4000 which puts me too far into the torque curve. The Getrag would
>> drop
>> > > me into about 3200 from 2nd to 3rd. If made a big difference in a
>> friend's
>> > > Fiero.
>> >
>> > Yes, the Quad 4 does have a different bolt pattern.  If you use a Quad
4,
>> > you will need the Getrag 5-speed or automatic that came with it (or
>> > another one).  All of the other GM L4/V6 FWD's use the same bolt
pattern.
>>
>> > (I think the NorthStar might, as well?)  I don't think the BOP/Chevy
bolt
>> > pattern thing holds much weight as far as FWD goes, I think it's all
just
>> > "GM".
>> >
>> > > I considered the Q4, but the HO's are hard to find. The Buick has the
>> > > problem of never being mated to a manual tranny. They check that in
>> > > California (if they decide to look, that can bounce the swap.) I've
>> been
>> > > over it extensively with CARB.
>> >
>> > Actually, the Buick _IS_ mated to a manual tranny - in the 95+
F-bodies.
>> > They use a RWD Series II 3800, rated at 200hp.  (5hp less than the
FWD?)
>> >
>> > As someone else posted, you will need to make your own flywheel anyway,
>> > and the web page he listed will tell you how.  It also mentions that
the
>> > RWD flywhel is too thick, but could probably be machined down to fit.
>> >
>> > BTW, there's some info on various Fiero engine swaps on my web page
(see
>> > below) which might be interesting to you.  :)
>> >
>> > C'ya    |  86 Fiero SE 2m6 4-speed  |  Space Coast Fieros
>> > Sketch  |  Daytona Beach, FL        |  Florida Fiero Council
>> >
>> > Florida Fiero Council & Online Service Guide:
>> > http://apollo.pacificweb.net/~sketch/
>> >
>
> Sorry about the delay, I've had to spend the last two days dealing with
>Christmas parties, Christmas shopping, Christmas cards, and Christmas
traffic.
>
>I guess by now that you found out that BOP is Buick, Olds, Pontiac (and
some
>Cadillac) bellhousing pattern for RWD vehicles.
>
>Well, I learned some new things.  3800 in a Camaro, that's new.  Different
>bellhousings for FWD, that's new, too.  Confirmed the 3800 but not the
>bellhousings.  It's okay, I've got faith.
>
>Now for things I did find...
>
>Got an Olds Rocketparts and older GM Perf. parts book here.  Latest Chevy
Power
>is at the shop.  Got heavy duty differentials here for "any GM five-speed
>transaxle"  #22551487.  There's a note in my Muncie 5 speed transaxle book
that
>rated input torque is 170 ft. lbs (future cap of 200 ft. lbs.). Book is
dated
>1988.  Looks like J, L, and N cars hold more oil than A or P cars.  I think
A
>is celebrity, P is Fiero, J is Cavalier, L is Corsica/Beretta, N is Cutlass
>Calais.  Also show different parts for 2.8/3.1 and also some
>tips/suggestions/parts for Olds stuff used in IMSA racing.  Hey!  Found a
part
>no for an Achieva body in white!!  Wonder what they mean by "special
handling
>required".
>
>Cutlass Calais came with 3.0l v-6 which is little brother to the 3.8l
engine.
>Maybe get the flywheel and rebalance if necessary?? Maybe get complete
>engine/trans combo so bolts, brackets, clips, and what-have-you are handy.
>BTW  If you don't rebuild the engine, change the timing gears.  When it
goes,
>valves go too.  I've changed a bunch after it's too late.
>
>Worried about conversions?  Worried about emissions inspections?  Wyoming
and
>Montana have no vehicle inspections whatsoever.  :)
>
>My answer to making my 83 Phoenix phaster is going to be RWD.  302 ci, pfi,
>muncie 4 spd.  What a fun toy. But that is 3rd project in list of big ones.
>
>Hmmm...what about Aurora v-8?  I'll find out tomorrow if they came with
std.
>trans.  Yeah, I know.  That one costs money :(
>
>Shannen
>
>
>