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Old 07-19-2010, 09:30 PM
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S-10

Hi to all Iím new.
1989 S-10
With a swaped out V6 4.3 I didnít do the swap. I bought it that way for $700
So far I have ripped off the stock intake and put on a Edelbrock aluminum intake, put a Holley 4160 600cfm carb, in place of that dammed throttle body, changed out the electric distributor and in its place an in cap coil vacuum advance distributor.
I have been throwing grease caked parts and vacuum hoses over my shoulder and clipping crusty wires for weeks in my free time.
I have 2 things that have me stumped.
1st the Holley has no hook up for a fuel return and as of now Iím using the old stock in tank electric pump..If I do this and cap off the return line will dead heading that pump burn it up???
2nd the guy at the parts store that sold me the intake gave me the gasket set for the minivan 4.3engine and after I installed it all I noticed the old gaskets had the rear coolant ports blocked off and It dawned on me that the gasket I installed had that set of ports open. Now with that said the back side of the new intake wonít allow any water to flow anyplace but it kinda worries meÖwhat do you guys think????
Am I on the right road?? Itís going to be work transport and hobby at the same time

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Old 07-20-2010, 06:10 AM
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well you'll need a bypass fuel pressure regulator. the TBI fuel pump puts out 12-14 psi or so and the holley carb needs around 6 psi. a holley 12-803-bp regulator will work good. you need some kind of return line so you don't damage the fuel pump
don't worry about the gasket. there won't be any issues with it
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