awd astro

titocrx88 · Post by **titocrx88** » Mon May 17, 2010 9:36 pm

is the chevrolet express engine a big block or small?if is a big block can i swap it in my 1998 awd astro?

LiftedAWDAstro · Post by **LiftedAWDAstro** » Tue May 18, 2010 5:49 am

Both and yes you can swap it. The tranny and rear axle will need to be changed as well as they won't hold up to BBC power.

Cobra · Post by **Cobra** » Tue May 18, 2010 6:41 am

wait what do you mean both

1Gary · Post by **1Gary** » Tue May 18, 2010 7:14 am

Might help if you gave us some more details and what you are looking at for a engine.What does the engine tag say on the rad support of the donor van??.You could swap both,but a 5.7 would be easier.

LiftedAWDAstro · Post by **LiftedAWDAstro** » Tue May 18, 2010 4:10 pm

I mean the express was available with both a SBC and a BBC as well as diesel.

rlsllc · Post by **rlsllc** » Tue May 18, 2010 6:22 pm

Anything can be done with enough work, but the easiest would be the Vortec 5.7 or 5.0, which were in Express and Savana vans (plus a lot of other GM vehicles fro 1996 on) until 2002, IIRC. Oil pan, mounts, run a couple new wires for the 2 extra injectors and new connector, clearance for the right exhaust manifold, flash the PCM, and it goes in fairly easy.

The 8.1 or newer 4.8, 5.3, and 6.0 would be a hassle, but possible with a lot more fabrication.

I'm working on 5.7 vortec swap on a 1999 AWD now, and a 1989 with a TPI 350, SM465 4-speed trans, and a NP241 T-case with front disconnect.

Chevy & GMC Vans

Chevy & GMC Vans

awd astro

awd astro

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