CarburetorsCarb discussion and questions. Upgrading your Third Gen's carburetor, swapping TBI to carburetor, or TPI to carburetor? Need LG4 or H.O. info? Post it here.
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changeing stock fuel pump on L69 305 to a carter H.V. mechanical pump-Questions......
I was going to swap out the stock pump for the factory pump,But i noticed a few differences between the stock pump and the carter pump. The main difference is the lines.On the stock pump there are 3 lines,one is a return line,and the other 2 are Your "in" and "out" lines.I know i can by-pass the return line,But one of the other lines is a A-N type screw in line,And the other is just a rubber hose line that you tighten by tightening the screw.The carter pump (part #m6900)only has provisions for 2 A-N type lines.Am i going to have to change one of the lines to a A-N type line?Does anyone else have this fuel pump,And if you do,How did you make yours work?
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82 firebird with 305H.O.,Block bored .30 over,Keith black hyperutectic flat top pistons for 10 to 1 compression,Turned crank,Magnafluxed connecting rods,Melling H.V. oil pump,and double roller timeing chain,Ported and shaved heads w/3angle valve job,Z-28springs,Summit push rods and comp cams magnum roller rockers,Ported Edelbrock performer r.p.m.intake,Carter 625 afbcarb,Accell spark plugs,wires,and H.E.I.super coil,Heavy duty cap and rotor,Clevite performance cam with 450-460 inches of lift,Comp cams lifters,700r-4 tranny rebuilt with trans-go rebuild kit,corvette servo,New torQue converter,Flowtech headers,Flowmaster muffler,3.73limited slip rear end,Energy suspension bushings from front to rear,Energy suspension tranny mount,New center link,ball joints,trans-am steering box,ASP power pully.
Go to your nearest autoparts store and do one of a few different things...
1) Get some steel fuel line (5/8" I believe) and a pipe cutter. The steel line should come with the fitting all ready flared on the end. Make the appropriate bends to clear the smog pump/whatever and cut it off a few inches later. Clamp the rubber hose on and drive away.
2) Get a fitting (ones for air compressors work). Screw it in. Clamp hose on barbed end and drive away.
If you don't want to bend a new inlet line, then the stock one should screw in OK.
BTW- You are aware that you can rotate the base too... right? That may come in handy.
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1984 z28 w/ a 357 cu in. monster engine which is looking like the posterchild for Edelbrock with the exception of the Holley 750vac... all the suspension stuff... 9-bolt posi disk is in...
The stock pump is 5/8-18 inverted flare on the outlet and 3/8" hose on the inlet. I believe the Carter pump is 1/4" NPT. You could use a 1/4" NPT to 3/8" hose barb for the inlet, like an Earl's P/N 984006. I assume you've already done something to the stock outlet line to put the AFB on. If you have rubber hose from the pump up to the carb, you could use another of the same adapter.
