TPI to TBI

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Nov 20, 2015 | 10:04 AM

RedIrocZZ

Thread Starter

Junior Member

Joined: May 2014

Posts: 42

Likes: 0

From: North Carolina

Car: 1986 Camaro IROC-Z

Engine: 350 C.I.

Transmission: 700R4

TPI to TBI

What would I need to do to make my Camaro a TBI? It is currently a TPI.

Nov 20, 2015 | 10:07 AM

Bob88GTA

Supreme Member

iTrader: (2)

Joined: Apr 2000

Posts: 3,938

Likes: 99

From: Huntsville AL

Car: 88GTA

Engine: 5.7TPI

Transmission: Auto

Axle/Gears: 3.27

Re: TPI to TBI

The reverse of this..........had to do that!

https://www.thirdgen.org/forums/engi...hlight=TBI+TPI

Nov 20, 2015 | 10:12 AM

Twin_Turbo

Supreme Member

iTrader: (25)

Joined: Jun 2000

Posts: 5,364

Likes: 51

From: Enschede, Netherlands

Car: 82 TA 87 IZ L98 88 IZ LB9 88 IZ L98

Engine: 5.7TBI 5,7TPI 5.0TPI, 5,7TPI

Transmission: T5, 700R4, T5, 700R4

Axle/Gears: 3.08, 3.27, 3.45, 3.27

Re: TPI to TBI

WHY?

Nov 20, 2015 | 06:04 PM

RS Chris

Supreme Member

Joined: Aug 2004

Posts: 1,046

Likes: 6

From: Pasadena, TX

Car: 1991 RS

Engine: 5.0

Transmission: 700r4

Re: TPI to TBI

^^X2.

Nov 21, 2015 | 12:16 PM

88RS

Member

iTrader: (7)

Joined: Mar 2006

Posts: 239

Likes: 35

Car: 91 z28

Engine: 305 tpi

Transmission: t5

Axle/Gears: lt1 10 bolt 3.23

Re: TPI to TBI

Why not? TBI is a simpler. cheaper system to modify for performance.

Nov 21, 2015 | 12:53 PM

Twin_Turbo

Supreme Member

iTrader: (25)

Joined: Jun 2000

Posts: 5,364

Likes: 51

From: Enschede, Netherlands

Car: 82 TA 87 IZ L98 88 IZ LB9 88 IZ L98

Engine: 5.7TBI 5,7TPI 5.0TPI, 5,7TPI

Transmission: T5, 700R4, T5, 700R4

Axle/Gears: 3.08, 3.27, 3.45, 3.27

TPI to TBI

It's no simpler than tpi. Just less inhectors. How do youcheaply get more performance out of it trumping the tpi?

Nov 21, 2015 | 01:30 PM

RS Chris

Supreme Member

Joined: Aug 2004

Posts: 1,046

Likes: 6

From: Pasadena, TX

Car: 1991 RS

Engine: 5.0

Transmission: 700r4

Re: TPI to TBI

It may be simpler to tear apart and work on, but you'll seriously limit your power potential with it. It's good for a daily driver but for performance not so much. Why not a stealth ram or pro flow intake?

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Nov 21, 2015 | 02:03 PM

RBob

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iTrader: (1)

Joined: Mar 2002

Posts: 18,432

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From: Chasing Electrons

Car: check

Engine: check

Transmission: check

Re: TPI to TBI

Quote:

Originally Posted by RS Chris

Why not a stealth ram or pro flow intake?

They aren't TPI. The OP never stated his goals.

RBob.

Nov 21, 2015 | 02:07 PM

RS Chris

Supreme Member

Joined: Aug 2004

Posts: 1,046

Likes: 6

From: Pasadena, TX

Car: 1991 RS

Engine: 5.0

Transmission: 700r4

Re: TPI to TBI

Not specifically no, but he did hint at "modifying for performance".

Nov 21, 2015 | 02:14 PM

#10

RBob

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Joined: Mar 2002

Posts: 18,432

Likes: 231

From: Chasing Electrons

Car: check

Engine: check

Transmission: check

Re: TPI to TBI

Quote:

Originally Posted by RedIrocZZ

What would I need to do to make my Camaro a TBI? It is currently a TPI.

Is this the '86? If so it is easy, EFI wise need to move a few terminals/wires in the ECM harness connectors. Add a MAP sensor and wire it in (use the MAF wires). Under the hood, change the injector connectors, and possibly the TPS & IAC (they vary) connectors.

Swap the intake, be aware of the TBI intake having the newer mounting bolt angles (4 bolts).

RBob.