1 - What was the last year Ford used carburators on their Cars & Light Trucks ?
2 - What is the last year you can install an intake and carburator in and not mess up the system ?
I know '92 and older chebby trucks will work fine with a Holley carb / HEI distributor but the 93 and newer auto transmissons shift by the computor system . My newest Ford is an '85 but I never know what will follow me home .
Electronic auto transmissions started appearing in trucks in 1989 so you may want to consider that the cutoff, otherwise the 5.0 went EFI in 1986, the 4.9 and 5.8 in 1987, and the 7.5 in 1988 if I'm not mistaken.. could be off a year on the last one. Converting a 5.0 or 5.8 of any vintage from EFI to carb is no problem as the heads never changed so a carb intake will bolt right on, but the 4.9 and 7.5 got EFI specific heads so converting is more complicated/expensive. That said.. if the EFI system is intact and operating normally you're not gaining anything by putting a carb on it and despite some popular myths the EFI system is not restricting power output and will adapt to bolt-on upgrades including cams, heads, and exhaust without any outside adjustment.. as long as the cam selected is considered EFI friendy.. which means no lumpy idle.
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