anyone have a TPI setup?? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

regal8r · 03-05-2007, 10:05 PM

thinkin about converting to a TPI setup in the future. can i use the same heads? i knwo that i will need the ecu, injectors/rail, harness and complete intake assembly. is there anything else i would need? also, is the 305 TPI setup the same as the 350, or does the 350 have bigger injectors or something?

regal8r · 03-05-2007, 10:07 PM

also, i realize that i will need an electric fuel pump and a mech. fuel pump blockoff plate for the engine

TierAngst · 03-05-2007, 11:51 PM

Not worth the trouble. I've seen someone that did a lot of research on it end up getting screwed over multiple times because of the finicky crap that goes on with the conversions. He has spent more on a sub-par TPI setup than he could've on something like a holley stealth ram setup.

Oh and so I can at least be of a little help in answering the question, 350s had bigger injectors

Mick72K2500 · 03-06-2007, 12:10 AM

The TPI setup is great for trucks. Great for building torque in the low and midrange. I am slowly picking up parts for a conversion. The earlier TPI intake manifold will bolt to the older heads. Later ones you have to worry about the center bolt holes. As far as the wiring and ECU, I wouldn't worry about the factory items. Newest ones are at least 15 years old and can be brittle. I would look into an aftermarket harness. I don't know how comfortable you are with electronics, but you may want to look into Megasquirt. It would be a lot easier than trying to adapt a factory setup to your ride.

**special-K** · 03-06-2007, 12:24 AM

It`s alot of work,to say the least.An important piece to the puzzle is a good wiring harness.

454_72_4X4 · 03-06-2007, 03:00 AM

I've got a complete TPI intake. I was at one time going to do the conversion on my S-10.

TierAngst · 03-06-2007, 10:43 AM

One thing to look out for if you're piecing stuff together is not all bases match all plenums so get both as a single unit.

03-05-2007, 10:05 PM	#1
regal8r Registered User Join Date: Oct 2006 Location: Lincoln, Nebraska Posts: 112	anyone have a TPI setup?? thinkin about converting to a TPI setup in the future. can i use the same heads? i knwo that i will need the ecu, injectors/rail, harness and complete intake assembly. is there anything else i would need? also, is the 305 TPI setup the same as the 350, or does the 350 have bigger injectors or something?

03-05-2007, 10:07 PM	#2
regal8r Registered User Join Date: Oct 2006 Location: Lincoln, Nebraska Posts: 112	Re: anyone have a TPI setup?? also, i realize that i will need an electric fuel pump and a mech. fuel pump blockoff plate for the engine

03-05-2007, 11:51 PM	#3
TierAngst Registered User Join Date: Feb 2007 Location: San Antonio Posts: 51	Re: anyone have a TPI setup?? Not worth the trouble. I've seen someone that did a lot of research on it end up getting screwed over multiple times because of the finicky crap that goes on with the conversions. He has spent more on a sub-par TPI setup than he could've on something like a holley stealth ram setup. Oh and so I can at least be of a little help in answering the question, 350s had bigger injectors

03-06-2007, 12:10 AM	#4
Mick72K2500 Registered User Join Date: Oct 2006 Location: Reno, NV Posts: 4	Re: anyone have a TPI setup?? The TPI setup is great for trucks. Great for building torque in the low and midrange. I am slowly picking up parts for a conversion. The earlier TPI intake manifold will bolt to the older heads. Later ones you have to worry about the center bolt holes. As far as the wiring and ECU, I wouldn't worry about the factory items. Newest ones are at least 15 years old and can be brittle. I would look into an aftermarket harness. I don't know how comfortable you are with electronics, but you may want to look into Megasquirt. It would be a lot easier than trying to adapt a factory setup to your ride. __________________ It doesn't matter which way you are facing, as long as you are going in the right direction.

03-06-2007, 12:24 AM	#5
special-K Special Order Join Date: Nov 2004 Location: Mt Airy, MD Posts: 85,861	Re: anyone have a TPI setup?? It`s alot of work,to say the least.An important piece to the puzzle is a good wiring harness. __________________ "BUILDING A BETTER WAY TO SERVE THE USA"......67/72......"The New Breed" GMC '67 C1500 Wideside Super Custom SWB: 327/M22/3.42 posi.........."The '67" (project) GMC '72 K2500 Wideside Sierra Custom Camper: 350/TH350/4.10 Power-Lok..."The '72" (rolling) Tim "Don't call me a redneck. I'm a rough cut country gentleman" R.I.P. ~ East Side Low Life ~ El Jay ~ 72BLUZ ~ Fasteddie69 ~ Ron586 ~ 67ChevyRedneck ~ Grumpy Old Man ~

03-06-2007, 03:00 AM	#6
454_72_4X4 Registered User Join Date: Apr 2004 Location: N.E. MO Posts: 1,749	Re: anyone have a TPI setup?? I've got a complete TPI intake. I was at one time going to do the conversion on my S-10. __________________ 72 C20 4X4 454 4 speed 89 Trans Am (was) 305 TPI 700r4 93 C1500 2wd Extended cab 350 700r4 98 Sonoma (TPI outa the Trans Am) 03 Yamaha 660 Raptor 03/04 660 Raptor 07 700 Raptor 85 Honda Odyssey

03-06-2007, 10:43 AM	#7
TierAngst Registered User Join Date: Feb 2007 Location: San Antonio Posts: 51	Re: anyone have a TPI setup?? One thing to look out for if you're piecing stuff together is not all bases match all plenums so get both as a single unit.



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