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Old 06-11-2015, 06:49 AM   #26
1project2many
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Re: TPI in my 51 GMC

The intake will limit power. The main factor is the small runner size which limits airflow. A smaller displacement engine will run to higher rpm, 5200 or so with a 302, while a 383 can see a peak as low as 4200. There is an aftermarket version of the TPI based on a system by Airsensors / F.I.R.S.T. which will support more power / higher rpm but they're spendy. They were offered as a standalone system with a fuel only computer and were also sold through B&M as "Superjection."




Leftover NOS from this defunct company was for sale through a website called auto-nomics but I see they've sold their inventory to first performance. There's plenty of reading on the auto-nomics site and you can view some neat installations and current offerings on the first performance site. Personally I'd use a factory GM ecm with this manifold but standalone kits are available.

Last edited by 1project2many; 06-11-2015 at 07:06 AM.
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Old 06-11-2015, 11:49 PM   #27
Softpatch
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Re: TPI in my 51 GMC

congrats nice job
I had an howell injection system on my 64 and can tell you it was not a success did not have any fun a real wallet burner.... howell system soured me
it was definitely not plug and play

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Old 06-12-2015, 10:29 AM   #28
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Re: TPI in my 51 GMC

I just picked up a 87 350, checked the casting #'s and that and the computer tells me that everything is a 350CI.
The question I have for those of you that have had good luck with them is...... I want to start the engine, but I have no idea which wires I need in the harness I need to start ONLY.
There is a 700R attached to it and all wiring is attached all the way to the computer.

Where do I start ? pun intended!!
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Old 06-12-2015, 12:12 PM   #29
Katrina/10
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Re: TPI in my 51 GMC

Quote:
Originally Posted by solidaxel View Post
I just picked up a 87 350, checked the casting #'s and that and the computer tells me that everything is a 350CI.
The question I have for those of you that have had good luck with them is...... I want to start the engine, but I have no idea which wires I need in the harness I need to start ONLY.
There is a 700R attached to it and all wiring is attached all the way to the computer.

Where do I start ? pun intended!!
Is it removed from the truck? Everything on the engine needs to be plugged in, and there are two 12v wires to the battery. It will run without the O2 sensor, and of course you will need to hotwire a fuel pump.
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Old 06-12-2015, 12:34 PM   #30
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Re: TPI in my 51 GMC

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Originally Posted by Katrina/10 View Post
Is it removed from the truck? Everything on the engine needs to be plugged in, and there are two 12v wires to the battery. It will run without the O2 sensor, and of course you will need to hotwire a fuel pump.
Thanks, All the connections are still on the engine I have removed the body and front sheet metal so it is just a rolling chassis
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53 TuTone Extended Cab 350 4-Spd 3:08 (SOLD)
53 Chevy Moldy pearl green ZZ-4 4L60E 9" 3:25
55 GMC 1st Black Mll ZZ4 TKO 600 5 sp 3:73
62 Solidaxle Corvette Roman Red 327
340hp 4spd 3:36
65 Corvette Coupe 327 350hp 4spd 4:11
78 Black Silverado SWB (350/350) 5.3 & 4L60E 3:42
2000 S-Type 3.0 (wifes cruiser)
2003 GMC SCSB 5.3 4L60E 3:42
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Old 06-12-2015, 03:31 PM   #31
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Re: TPI in my 51 GMC

Since you say it is an 87, from the picture alone, you will need to add the MAF sensor. ECU has a couple BAT leads and some IGN leads. You can find the wiring diagrams on the web. You will need to know your ECU number to make sure you don't fry something.
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Old 06-12-2015, 03:39 PM   #32
solidaxel
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Re: TPI in my 51 GMC

I think I need to get out of Katrin's site and start my own.
Thanks for the help

If you don't mind I will add the numbers from the computer
Service #01227165
It has a SuperChip #8820 B installed
The casting numbers on the engine block
14610207
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53 TuTone Extended Cab 350 4-Spd 3:08 (SOLD)
53 Chevy Moldy pearl green ZZ-4 4L60E 9" 3:25
55 GMC 1st Black Mll ZZ4 TKO 600 5 sp 3:73
62 Solidaxle Corvette Roman Red 327
340hp 4spd 3:36
65 Corvette Coupe 327 350hp 4spd 4:11
78 Black Silverado SWB (350/350) 5.3 & 4L60E 3:42
2000 S-Type 3.0 (wifes cruiser)
2003 GMC SCSB 5.3 4L60E 3:42

Last edited by solidaxel; 06-12-2015 at 03:54 PM.
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Old 06-12-2015, 04:28 PM   #33
Katrina/10
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Re: TPI in my 51 GMC

No problem, if you are the one taking it apart, you can see where all the wires go. It will really help you if you download the FSM wiring diagrams for the car you are taking it out of.
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Old 06-12-2015, 04:30 PM   #34
Katrina/10
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Re: TPI in my 51 GMC

Quote:
Originally Posted by solidaxel View Post
I think I need to get out of Katrin's site and start my own.
Thanks for the help

If you don't mind I will add the numbers from the computer
Service #01227165
It has a SuperChip #8820 B installed
The casting numbers on the engine block
14610207
No problem, if you are the one taking it apart, you can see where all the wires go. It will really help you a lot if you get a copy of the FSM wiring diagrams for the car you are taking it out of.
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Old 06-13-2015, 05:42 PM   #35
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Re: TPI in my 51 GMC

this is very cool. I have two of these intakes and a harness with computer. I was going to toss them but now maybe not. I started a 42 flatbed that might look cool with this setup. Dont you need the whole gas tank also with a 40 psi fuel pump?
In my 54 I have the whole harness and chassis with the 4l60e and 5.7. Runs great now.
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Old 06-14-2015, 07:43 AM   #36
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Re: TPI in my 51 GMC

Quote:
Originally Posted by docrock View Post
this is very cool. I have two of these intakes and a harness with computer. I was going to toss them but now maybe not. I started a 42 flatbed that might look cool with this setup. Dont you need the whole gas tank also with a 40 psi fuel pump?
In my 54 I have the whole harness and chassis with the 4l60e and 5.7. Runs great now.
Don't throw them away, somebody could use them! They really do look cool and work well in a truck. I used the original tank, with an inline electric pump.
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Old 06-14-2015, 10:31 AM   #37
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Re: TPI in my 51 GMC

1project,

I looked at the website, https://www.firstfuelinjection.com/services.html. Man they are pretty proud of those parts! They are expensive.
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Old 06-14-2015, 03:34 PM   #38
1project2many
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Re: TPI in my 51 GMC

Yes, they are very expensive. But they are the only long runner, TPI style intake I'm aware of that can produce 500+ hp n/a. And I *believe* they have a vortec base available now. Look at pricing for the stealth ram.

You could always use a stock unit and add turbo / supercharging.
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Old 06-14-2015, 09:17 PM   #39
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Re: TPI in my 51 GMC

I have it in my truck. Found a good deal on the Edelbrock intake and runners so I swapped those as well.Name:  image.jpg
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