how hard is a 5.3 swap? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Smokin72on20s · 01-08-2004, 08:44 PM

what modifications would i have to do to make a new vortec 5.3 engine work in my truck? would i need custom motor mounts? would i need to do any cutting? is it an fairly easy swap?

dinnut · 01-08-2004, 09:06 PM

motor mounts you would have to use the ls1 stlye mounts since it is a ls1 based motor... i dont know much about the actual swap but i know youd need the complete computer...
geez man you have asked how hard this would be with like 3 or 4 different engines... still trying to decide?

Smokin72on20s · 01-09-2004, 02:43 AM

dinnut-yes, there are so many ways to go. i know for sure i want a fuel injected motor, but i am not sure which one. i wonder how much the ls1 motor mounts would cost?

68LSS1 · 01-09-2004, 03:56 AM

S & P and MOTHERTRUCKERS sells SBC to LS1 adapters.

Vince M · 01-09-2004, 07:32 PM

You have to also trim the upper right frame rail to clear the A/C compressor if it has one.

01-08-2004, 08:44 PM	#1
Smokin72on20s Ebay Junky Join Date: Oct 2003 Location: CO Posts: 893	how hard is a 5.3 swap? what modifications would i have to do to make a new vortec 5.3 engine work in my truck? would i need custom motor mounts? would i need to do any cutting? is it an fairly easy swap? __________________ 1972 CHEVY C-10 SWB 2WD - Possible Typhoon 4.3 turbo drivetrain.. 1983 Chevy c10 swb 2wd - possible 350tbi supercharged...

01-08-2004, 09:06 PM	#2
dinnut Registered User Join Date: Apr 2003 Location: missouri city, tx Posts: 4,486	motor mounts you would have to use the ls1 stlye mounts since it is a ls1 based motor... i dont know much about the actual swap but i know youd need the complete computer... geez man you have asked how hard this would be with like 3 or 4 different engines... still trying to decide? __________________ 70 longbed 496/th400/Ford 9"

01-09-2004, 02:43 AM	#3
Smokin72on20s Ebay Junky Join Date: Oct 2003 Location: CO Posts: 893	dinnut-yes, there are so many ways to go. i know for sure i want a fuel injected motor, but i am not sure which one. i wonder how much the ls1 motor mounts would cost? __________________ 1972 CHEVY C-10 SWB 2WD - Possible Typhoon 4.3 turbo drivetrain.. 1983 Chevy c10 swb 2wd - possible 350tbi supercharged...

01-09-2004, 03:56 AM	#4
68LSS1 Registered User Join Date: Dec 2002 Location: Tampa Posts: 1,191	S & P and MOTHERTRUCKERS sells SBC to LS1 adapters. __________________ '68 Short Step LS1/T56, Hydratech, Fatman Fabrications Stage III, Baer, Hot Rods to Hell, US Body, S&W, etc

01-09-2004, 07:32 PM	#5
Vince M Senior Member Join Date: Apr 2000 Location: Orlando, FL Posts: 1,076	You have to also trim the upper right frame rail to clear the A/C compressor if it has one. __________________ ............................................................ 68 Chevy CST SWB w/LS1, carb & 700r4. Golden Anniversary clone with a few improvements.



Register or Log In To remove these advertisements.

Register or Log In To remove these advertisements.