Tuned Port Injection Question!!! - Pirate4x4.Com : 4x4 and Off-Road Forum

ScoutsHonor · 12-20-2001, 05:27 AM

I'm in the process of building my 383 Stroker that I will be swapping into my Scout, and I'd planned on just buying a TPI setup from eBay or somewhere that I could find a good one for a decent price. My question is, since the computers have speed sensors, etc... will I have to swap transmissions as well to a GM tranny? Is there any way just to leave that speed sensor shutoff and still make the engine run like its suppost to? Someone help me out here!

Matt "Taz" Green

iroc-cj · 12-20-2001, 08:24 PM

Matt

I have a dana-300 with a speed sensor, it just threads on between the t-case & speedo cable. so you can use any transmission.

if you do go with a TPI setup don't dissable the speed sensor it's used for lots of things in the computer. the cost of the speed sensor is not that much from jegs or summit.

A good website for TPI info is www.thirdgen.org

good luck .

hewl35 · 12-21-2001, 05:48 AM

Quote:

Originally posted by ScoutsHonor
I'm in the process of building my 383 Stroker that I will be swapping into my Scout, and I'd planned on just buying a TPI setup from eBay or somewhere that I could find a good one for a decent price. My question is, since the computers have speed sensors, etc... will I have to swap transmissions as well to a GM tranny? Is there any way just to leave that speed sensor shutoff and still make the engine run like its suppost to? Someone help me out here!

Matt "Taz" Green

On the website jagsthatrun.com they make & sell speed sensors for TBI & TPI. They also sell a damn good book about doing FI swaps. I've got a '86 305 TPI with a th350 in a J10 frame with homemade body.

BlazzinOR · 12-21-2001, 12:06 PM

The TPI can be run without regards to transmission selection. Doesn't even care..........lol. Now, about the VSS...........I have had this debate a couple of times - my stand is on the side of 'you don't HAVE to have it'. Period.

Now, will it be a good idea to use it if you can make it adapt? YES, but I have run my TPI K5 for a year and a half with NO VSS and believe me, it runs............and runs excellent. My builder has done over 130 TPI conversions into mostly Jaguars, but that list includes a couple of Jeeps, Toyotas, S-10s, etc. and not ONE of them have a VSS.

One other factor you need to be aware of in your project is the compatibility between the TPI manifold and your heads. If you go Vortec heads, you will need to get the new GM Vortec/TPI intake or look for aftermarket.

Good luck..........keep us posted.

BlazzinOR · 12-21-2001, 12:07 PM

By the way, the VSS aftermarket companies use goes inline on your speedo cable.

zakk · 12-21-2001, 03:07 PM

i will never get over how beautiful that TPI looks in a K5...ever...

12-20-2001, 05:27 AM	#1 (permalink)
ScoutsHonor Wheeler Join Date: Jul 2001 Member # 6181 Location: Mead, OK Posts: 340	Tuned Port Injection Question!!! I'm in the process of building my 383 Stroker that I will be swapping into my Scout, and I'd planned on just buying a TPI setup from eBay or somewhere that I could find a good one for a decent price. My question is, since the computers have speed sensors, etc... will I have to swap transmissions as well to a GM tranny? Is there any way just to leave that speed sensor shutoff and still make the engine run like its suppost to? Someone help me out here! Matt "Taz" Green

12-20-2001, 08:24 PM	#2 (permalink)
iroc-cj Registered User Join Date: Jun 2001 Member # 4985 Location: Minnesota Posts: 133	Matt I have a dana-300 with a speed sensor, it just threads on between the t-case & speedo cable. so you can use any transmission. if you do go with a TPI setup don't dissable the speed sensor it's used for lots of things in the computer. the cost of the speed sensor is not that much from jegs or summit. A good website for TPI info is www.thirdgen.org good luck . Last edited by iroc-cj; 12-20-2001 at 08:29 PM.

12-21-2001, 12:06 PM	#4 (permalink)
BlazzinOR Registered User Join Date: Oct 2000 Member # 2039 Location: Oregon Posts: 190	The TPI can be run without regards to transmission selection. Doesn't even care..........lol. Now, about the VSS...........I have had this debate a couple of times - my stand is on the side of 'you don't HAVE to have it'. Period. Now, will it be a good idea to use it if you can make it adapt? YES, but I have run my TPI K5 for a year and a half with NO VSS and believe me, it runs............and runs excellent. My builder has done over 130 TPI conversions into mostly Jaguars, but that list includes a couple of Jeeps, Toyotas, S-10s, etc. and not ONE of them have a VSS. One other factor you need to be aware of in your project is the compatibility between the TPI manifold and your heads. If you go Vortec heads, you will need to get the new GM Vortec/TPI intake or look for aftermarket. Good luck..........keep us posted. __________________ Blazzin no more..........convert to the Cummins Club. 2001 2500QCSB, Bombed 47RE, BHAF, EZ, Revtek leveling kit

12-21-2001, 12:07 PM	#5 (permalink)
BlazzinOR Registered User Join Date: Oct 2000 Member # 2039 Location: Oregon Posts: 190	By the way, the VSS aftermarket companies use goes inline on your speedo cable. __________________ Blazzin no more..........convert to the Cummins Club. 2001 2500QCSB, Bombed 47RE, BHAF, EZ, Revtek leveling kit

12-21-2001, 03:07 PM	#6 (permalink)
zakk A fucking killer Join Date: Oct 2001 Member # 7334 Location: Infernal Region Posts: 2,187	i will never get over how beautiful that TPI looks in a K5...ever... __________________ Fuck you Love, -zakk

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