I swapped my 93 over from EFI to carb and absolutely love it. Runs much better and much easier (for me) to tune and tweak.

I had a 306 with stock short block. AFR 185 heads. Vic jr intake and a 600 double pumper on it.

Ran consistent mid 12's at 110 mph in the 1/4 and 8.20's at 88 mph in the 1/8.

A 306 spinning 7000 RPM only needs 633 cfm. So if your on a mild 302,.. you only need a 600 - 650 cfm carb. Anything bigger will be too much carb and probably end up hurting performance.

I did mine totally redneck,.. in the middle of a 427w build and am now considering going TT with it,.. so I need a completely different fuel setup then I have now. But for the most part its really simple.

I ordered a Summit branded 140 GPH inline pump. EFI pump wont really work right,.. figure a 255 LPH Walbro pump is only rated 65 GPH. EFI pumps are more for sustained high pressure then volume like a carb pump.

The fuel pump was $110.00 and came with a Holley regulator.

I then dropped the tank. Removed the stock pump. In its place I installed 8 inches of 5/8 fuel line hose and hooked it up to the stock fuel hat where the stock pump was attached. Dropped it back down in the tank and that became my pickup tube. I mounted the fuel pump on the back side of my rear bumper. I disconnected the line that ran from the pump to the filter in front of the tank. I ran that to an inline filter before the Summit pump,. then ran the out side to the stock filter in front of the fuel tank and used the stock fuel line from there to just before the firewall. I cut both the main fuel line and the return line. I crimped off the return line because I wasnt going to use it. I then ran fuel line up to the regulator mounted on the firewall on the passenger side. Then mounted a fuel pressure regulator and another inline filter before the carb and then dead headed the fuel line at the carb. I set the fuel pressure at just a hair over 6 PSI.

For a distributor I used a Proform 50,000v 7500 rpm HEI distributor. Its very simple,.. only need a single 12v switched wire to feed it. It has a tach signal plug also. I removed my coil. Used the 12v wire from the coil to feed the HEI,.. and then the ground wire (tach signal) to the tach side,.. and viola.


Before:







AFTER:







Video:

At track
YouTube - 100 0663


Start up:
YouTube - startup1

Rumble:
YouTube - rumble


I sold the short block,.. but still have the carb and distributor for sale if your interested. Will probably be selling the fuel pump also. Wont be enough for new setup.

Hurst