1994 TBI 5.7/4L60E swap to a 1967-72 C-10? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Dasani · 07-06-2009, 09:20 PM

I have recently purchased a low mileage 5.7 TBI motor from a freshly wrecked 1994 Blazer (1500) with all the accessories and the computer. I’d like to install this engine along with a 4L60E into a 67-72 truck. I think I have my head around most everything I’ll need (fuel, spark and cooling to start with) however, one thing that I’m stumped on is the speedometer and speed sensor in the transmission. My question is has anyone done this kind of swap and or know of a reliable source for this information?

Dasani

LMN8UR · 07-06-2009, 09:47 PM

I assume the tranny currently has an electrical output for the speedo. If it were mine I'd put a 5" electronic speedo and matching tach in it.

Dasani · 07-06-2009, 10:16 PM

I do have an earlier 700R4 with the cable driven cable speedometer and I’m sure I could buy or build a TV cable bracket for it however I’m not sure what the computer uses that “speed” signal for. I guess I need to make myself smart on that first. If engine management and transmission management are separate, as with a manual transmission, then could I use the computer only to manage the TPI without the “speed” input?

Dasani

BP68 · 07-07-2009, 07:50 PM

Visit Brian over at www.tbichips.com
this site is a wealth of info on all things TBI.

Dasani · 07-07-2009, 09:46 PM

Quote:

Originally Posted by BP68

Visit Brian over at www.tbichips.com
this site is a wealth of info on all things TBI.

Thanks BP, nice project too!

Tom

07-06-2009, 09:20 PM	#1
Dasani Registered User Join Date: Jan 2009 Location: Havelock, NC. Posts: 497	1994 TBI 5.7/4L60E swap to a 1967-72 C-10? I have recently purchased a low mileage 5.7 TBI motor from a freshly wrecked 1994 Blazer (1500) with all the accessories and the computer. I’d like to install this engine along with a 4L60E into a 67-72 truck. I think I have my head around most everything I’ll need (fuel, spark and cooling to start with) however, one thing that I’m stumped on is the speedometer and speed sensor in the transmission. My question is has anyone done this kind of swap and or know of a reliable source for this information? Dasani

07-06-2009, 09:47 PM	#2
LMN8UR Registered User Join Date: Jun 2005 Location: Midlothian, VA Posts: 148	Re: 1994 TBI 5.7/4L60E swap to a 1967-72 C-10? I assume the tranny currently has an electrical output for the speedo. If it were mine I'd put a 5" electronic speedo and matching tach in it. __________________ 72 Chevy C-10 Custom LWB 383 Stroker - Edlebrock Air Gap intake and 670 CFM Holley Street Avenger carb. Hooker Comp Headers w/ X-Pipe and 2.25 duals TKO-500 & 3.08:1 rear I Love HEMI's, they're soft & chewy!

07-06-2009, 10:16 PM	#3
Dasani Registered User Join Date: Jan 2009 Location: Havelock, NC. Posts: 497	Re: 1994 TBI 5.7/4L60E swap to a 1967-72 C-10? I do have an earlier 700R4 with the cable driven cable speedometer and I’m sure I could buy or build a TV cable bracket for it however I’m not sure what the computer uses that “speed” signal for. I guess I need to make myself smart on that first. If engine management and transmission management are separate, as with a manual transmission, then could I use the computer only to manage the TPI without the “speed” input? Dasani

07-07-2009, 07:50 PM	#4
BP68 Registered User Join Date: Jun 2006 Location: Olive Branch, MS Posts: 824	Re: 1994 TBI 5.7/4L60E swap to a 1967-72 C-10? Visit Brian over at www.tbichips.com this site is a wealth of info on all things TBI. __________________ 68 C10 Shortbed Fleetside 06 Chevy Ext Cab Fleetside 03 Grand Prix GTP My build thread http://67-72chevytrucks.com/vboard/s...d.php?t=269999 Last edited by BP68; 07-07-2009 at 07:51 PM.



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