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Pontiac motor in a Chevy
#669895 August 30th 2014 6:03 pm
Joined: Mar 2005
Posts: 17
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I'm tossing around the idea of swapping in a Pontiac motor in my 79 G10.I know those motors very well and have a few kicking around.I would probaly use the 350 H.O I have.It's bottom end is fresh and I've got a nice set of heads coming in a week or so.I had the motor in my 67 Tempest wagon and the car just went so good.Now with better heads,I think it'll make this van a real runner.And with no miles on it,I know I'll have a reliable powerplant for years to come.

I'd probaly use a Poncho th-350 I have or get an adapter plate and run a 700r4.

Does anybody know of any writeups on this swap?I've seen vettemans thread,but I;m hoping to get some specifics,so I can start gathering parts

The 250 in this van is getting tired,and no way am I doing a small block.I like being diffrent.Plus if I go this route,one day in future when I convert van to 4x4 it'll have some nasty torque to keep it rolling

Any input/opinions are appreciated

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Re: Pontiac motor in a Chevy
JEEPNHAL #669900 August 30th 2014 7:01 pm
Joined: May 2007
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Festerus Vannimus
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He is NOT a member here, but I knew of a guy in Cheyenne Wyo who did a Olds 455 in a Chebby van, so it is very do able, but you may have to FAB motor mounts. I also THINK they offered the early 700R4 as a B.O.P. trans too, might check into that, no adapta plate needed then ! I think this is a cool idea and look forward to seeing LOTS OF PICS on the build ! HINT HINT ! lol


My van : 1989 Ford E-150 Econoline, currently named “WOLF-DEN II”


Founder & President of Sooner or Later United Truckers and PROUD TO BE A S.L.U.T. ! !
Re: Pontiac motor in a Chevy
Uncle_Fester #669901 August 30th 2014 7:11 pm
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Originally Posted by Uncle_Fester
He is NOT a member here, but I knew of a guy in Cheyenne Wyo who did a Olds 455 in a Chebby van, so it is very do able, but you may have to FAB motor mounts. I also THINK they offered the early 700R4 as a B.O.P. trans too, might check into that, no adapta plate needed then ! I think this is a cool idea and look forward to seeing LOTS OF PICS on the build ! HINT HINT ! lol


That sounds intresting too!!Completely diffrent motors,but same idea.
The motor mounts are probaly gonna be the biggest challenge,but no worries there,I'm no stranger to fabbing or welding.
Unfortunately no Ponchos came with 700r4,HOWEVER the 80s cars that came with 2004r's had a dual bolt pattern bell.So you could use them in Chevy's or B/O/P..I don't really want to use one only because theyre way more loot to build,and 700's are a dime a dozen..I've pondered the thought of even doing a 4 speed,like Muncie or Super T10,but that's a big undertaking and it's have to get scrapped when I make her a 4x

Haha on the pics.I promise,I will document everything and post lots of pics.Especially for the fact of maybe encouraging others to do the same swap.I've lived and breathed Pontiacs my whole life.Everybody has chevelles and Comaros,I have GTO's and Tempest's.I love the torque and sound they put out.It would make a killer drivetrain in a van.And diffrent to boot!

Re: Pontiac motor in a Chevy
JEEPNHAL #669912 August 30th 2014 9:58 pm
Joined: Jun 2010
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If you can dream it ... A guy wanted a boat & a van ..... well I know you know whats coming next .... another put a 12 cylinder 12 blowers 6 injected 750 double pumpers ..... it can be done.


SUNSHINE VANS-VAN DIEGO
ADRENALIN BY THE GALLON & CHASIN RACIN
ONE FOR THE DIRT & ONE FOR THE STREETS
'93 CHEVY G30 454 4X4 SPORTVAN EXT 146" WB
'92 CHEVY G30 454 BEAUVILLE EXT 146" WB

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