87 5.7 Tbi

Can anyone tell me if an older carb 5.7 block and be used on a 87 5.7 TBI using the heads and intake from the TBI engine?


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Ayuh,... Sure....

Yes, but you'll need the older engine's flywheel or flexplate to bolt to your clutch or torque converter as the older engine will have the 2 piece seal crankshaft which uses a different bolt pattern on the flange from that of one piece seal blocks.

Bogie

swap the TBI cam into the new motor while your at it.

Follow FastOrange's comment, I forgot to mention that if the cam is different the TBI will not track correctly to mixture and advance. It's really sensitive to this.

Bogie