ECM upgrade (1227730) for stock 2.8

ECM upgrade (1227730) for stock 2.8

Recently a friend of mine brought me his Fiero to have a swap done. He had a very high mileage stock 2.8 and 125-C and wanted me to swap in a lower mileage 2.8 and 440-T4 OD transmission. Not content with sticking with . . . → Read More: ECM upgrade (1227730) for stock 2.8

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4.3L TBI Injector Flow and Factory Cam Specs

4.3L TBI Injector Flow and Factory Cam Specs

Here’s a reference chart of TBI injectors.

Flow is lb/hr @ 13psi

GM Part # Engine Flow TBI bore 5235430 2.8L 33 35mm 5235203 4.3L 45 43mm 5235279 5.0L 40 . . . → Read More: 4.3L TBI Injector Flow and Factory Cam Specs

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