TPI Conversion

From the time I was 18 years old back in 1991, I wanted to build a fuel-injected Monte Carlo SS. I finally got the chance in 2000. This was long before the prices of LT1s and LS1s came down to the world of "affordable," so that's why I went with TPI. My friends that have done similar swaps recommended I try to find a complete setup and work from there. They also recommended a MAF system, because it's a little more forgiving of engine modifications. After a few days of research, I found an ad in the local Want Ad Press for a TPI 305 out of a wrecked '87 IROC Camaro. The deal included the engine from intake to oil pan, wiring harness, ECM, sensors, smog equipment, and electric fans. Score! We rebuilt and ran that 305 for 5 years in my old '85 SS and this '88 SS.

We adapted the factory F-body engine harness to the Monte Carlo's dash harness, so the ALDL connector and SES light are functional. With the F-body harness, the ECM lines up in the factory location on the Monte (passenger side kickpanel). I now have a Moates socket adapter and BURN1 unit so I can program my own chips for the 355.

I needed to enlarge the opening in the firewall for the computer harness. After I removed the fenderwell, it just took a few quick cuts with the Dremel cutoff wheel and some seamsealer to make the firewall look nice.

I mounted the MAF power, burnoff, and fuel pump relays on the driver side fenderwell.
The ESC module is located behind the distributor on the firewall.

You can see where we installed the fuel filter. I picked up new flex lines at the GM dealer, and the hard line was fabricated with Dorman repair lines with the correct Saginaw fittings. The feed line goes under the motor to the original 3/8" hard line in the frame on the driver side, and the return line is connected to the original 5/16" charcoal canister line. The stock 1/4" return line on the driver side is now the vent for the charcoal canister. Feeding the motor is an '87 Monte Carlo 4.3L TBI tank and sending unit, with a high-pressure TPI fuel pump mounted in the tank. It's nice and quiet this way.

The serpentine belt setup and air intake elbow were donated by a wrecked '88 Trans Am. The new belt arrangement uses stock F-body air conditioning lines with a 307 V8 Cutlass condensor in front of the radiator.

Here's the F-body aluminum radiator and electric fans. Also notice I relocated the battery to the driver side.

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