5.7 vortec upgrade

[Kblack24]

Hi Guys,

I am looking to upgrade since my engine recently threw a rod. I have a 97 Chevy Silverado 3500 crew cab with a 5.7( not sure what transmission is in the truck).

Currently thinking about putting a fully dressed blue print engine(400) in it or the small block 454. This will be a daily driver truck. Will i need to change the ECM for either engine and if so what type of cost and headache am i looking at for this?

GM SB Compatible 400 c.i. Engine - 500 HP - Deluxe Dressed - Fuel Injected

BluePrint Engines 400 c.i. small block GM style stroker crate engine - Deluxe Dressed longblock with carburetor. Includes 30 month / 50,000 warranty & BPE Dyno Promise. Part #: BP4002CTFD

blueprintengines.com

or

GM SB Compatible 454 c.i. ProSeries Engine - 563 HP - Long Block

BluePrint Engines 454 c.i. small block GM style proseries stroker crate engine - longblock. Includes 30 month / 50,000 warranty & BPE Dyno Promise. Part #: PS4541CT

blueprintengines.com

Thanks,

KB

 

[Sean Buick 76]

You should have a 4L80E trans. Yes you will need to start fresh with a new computer tune. If staying EFI I would look at FI crate engines.

 

[Drunkcanuk]

Simple answer is yes, kinda. There will definitely need to be tuning involved with an engine swap.

As for the transmission, crawl up under and look at the pan, and Google GM transmission identification. You will figure it out.
Most likely a 4L60E or 4L80.

 

[EJ_74]

454 small block? That's pretty cool, I didn't know you could get those. So I guess the external dimensions and attachment points are the same as a SBC and it just has different internals?

 

[Schurkey]

You should have a 4L80E trans.

Unless there's a clutch pedal.

Yes you will need to start fresh with a new computer tune. If staying EFI I would look at FI crate engines.

There will definitely need to be tuning involved with an engine swap.

Yup.

Most likely a 4L60E or 4L80.

No 4L60E in a 3500 Crew Cab.

 

[Sean Buick 76]

454 small block? That's pretty cool, I didn't know you could get those. So I guess the external dimensions and attachment points are the same as a SBC and it just has different internals?

Yes it’s normally an aftermarket block that bolts up like a smallblock and has the same external dimensions while having a larger stroke and bore to get the 454 cubes.

 

[Kblack24]

Unless there's a clutch pedal.



Yup.


No 4L60E in a 3500 Crew Cab.

No clutch pedal

 

[Kblack24]

You should have a 4L80E trans. Yes you will need to start fresh with a new computer tune. If staying EFI I would look at FI crate engines.

Would I need to change the computer or just tune the current one?

 

[Sean Buick 76]

For a 500+ Hp I would be looking at a complete EFI replacement by Holley.

 

[L31MaxExpress]

Would I need to change the computer or just tune the current one?

0411 swap and AUS spider if you need to pass a visual for smog. I had the 48 lb/hr AUS spider running my 383 on E85.