5.3 vortec - The 1947 - Present Chevrolet & GMC Truck Message Board Network

JMARQUEZ_13 · 01-02-2010, 01:28 AM

i was wondering if you can use a turbo 350 or 400 transmission on a 5.3 vortec motor? and if you can what do you need to make that work?

lsx72 · 01-02-2010, 01:31 AM

yea you can. just got to get the bell housing adapter. you can actually put any transmission behind them. my cousin runs a 4 speed bulldog behind his 6.0 in his mud buggy. it is a beast.

echo72 · 01-02-2010, 02:08 AM

Quote:

Originally Posted by JMARQUEZ_13

i was wondering if you can use a turbo 350 or 400 transmission on a 5.3 vortec motor? and if you can what do you need to make that work?

I saw that tranny swap being done on one of the builds, but I can't find it right now. Check the FAQ's, there is also some details about using those transmissions with GEN III engines.

**Thealien** · 01-02-2010, 08:09 AM

This was
Asked and answered 5 days ago

You can find what you need in that thread.

-T- · 01-02-2010, 10:52 AM

All you need is to redrill your flexplate using and old 350 flexplate to guide you on the 3 torque converter holes, then get a crank spacer from me or from some where like advanced adapters, and your rolling. Now if you want to still run a VSS for the computer, you will have to spend a little money to get a conversion for that. I never ran the VSS on my jeeps, and never had any issues. I have done 6 of these conversions, either for myself or for other people, and I'm about to put a 400 behind my 6.0 in my '69 CST. If you have any more ?'s feel free to ask or PM me. Good luck, Clay

JMARQUEZ_13 · 01-02-2010, 04:12 PM

ya i have a few more for ya. what about the fuel part of it do you need a fuel regulator? also the ignition can you kepp the stock ignition in the truck?

**Thealien** · 01-02-2010, 06:06 PM

WHat year engine? That will answer the fuel regulator question. Does your fuel rail have 1 or 2 lines coming from it?

You can keep the stock key/ignition switch as either stand alone or incorporate it into the LS harness.

Have you clicked on the link in my signature LS ENGINE SWAP INFORAMTION ? Lots of information there. I the first post there are 2 FAQ thread that will answer lots of your questions.

echo72 · 01-02-2010, 06:19 PM

Quote:

Originally Posted by JMARQUEZ_13

ya i have a few more for ya. what about the fuel part of it do you need a fuel regulator? also the ignition can you kepp the stock ignition in the truck?

Evidently, he hasn't read the posts that Thealien put out there.

01-02-2010, 01:28 AM	#1
JMARQUEZ_13 Registered User Join Date: Oct 2009 Location: MARYSVILLE WA Posts: 85	5.3 vortec i was wondering if you can use a turbo 350 or 400 transmission on a 5.3 vortec motor? and if you can what do you need to make that work? __________________ Josh 1968 C-10 Shortbox

01-02-2010, 01:31 AM	#2
lsx72 Registered User Join Date: Nov 2009 Location: greenville,sc Posts: 89	Re: 5.3 vortec yea you can. just got to get the bell housing adapter. you can actually put any transmission behind them. my cousin runs a 4 speed bulldog behind his 6.0 in his mud buggy. it is a beast.

01-02-2010, 08:09 AM	#4
Thealien Senior Member Join Date: Jun 2007 Location: Pine Ridge Florida Posts: 4,134	Re: 5.3 vortec This was Asked and answered 5 days ago You can find what you need in that thread. __________________ Click on my Not really a build thread, yet NOT SO RUST FREE RUST FREE BLAZER LS ENGINE SWAP INFORMATION THREAD BOLT RESTORATIONS 4l60 to an NP205

01-02-2010, 10:52 AM	#5
-T- Registered User Join Date: Oct 2009 Location: Easley, SC Posts: 130	Re: 5.3 vortec All you need is to redrill your flexplate using and old 350 flexplate to guide you on the 3 torque converter holes, then get a crank spacer from me or from some where like advanced adapters, and your rolling. Now if you want to still run a VSS for the computer, you will have to spend a little money to get a conversion for that. I never ran the VSS on my jeeps, and never had any issues. I have done 6 of these conversions, either for myself or for other people, and I'm about to put a 400 behind my 6.0 in my '69 CST. If you have any more ?'s feel free to ask or PM me. Good luck, Clay

01-02-2010, 04:12 PM	#6
JMARQUEZ_13 Registered User Join Date: Oct 2009 Location: MARYSVILLE WA Posts: 85	Re: 5.3 vortec ya i have a few more for ya. what about the fuel part of it do you need a fuel regulator? also the ignition can you kepp the stock ignition in the truck? __________________ Josh 1968 C-10 Shortbox

01-02-2010, 06:06 PM	#7
Thealien Senior Member Join Date: Jun 2007 Location: Pine Ridge Florida Posts: 4,134	Re: 5.3 vortec WHat year engine? That will answer the fuel regulator question. Does your fuel rail have 1 or 2 lines coming from it? You can keep the stock key/ignition switch as either stand alone or incorporate it into the LS harness. Have you clicked on the link in my signature LS ENGINE SWAP INFORAMTION ? Lots of information there. I the first post there are 2 FAQ thread that will answer lots of your questions. __________________ Click on my Not really a build thread, yet NOT SO RUST FREE RUST FREE BLAZER LS ENGINE SWAP INFORMATION THREAD BOLT RESTORATIONS 4l60 to an NP205



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