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#1
01-23-2010, 10:42 AM
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67 GTO fuel pump have 5/16" inlet?????
I received two fuel pumps ordered for a 67 GTO and both came with a 5/16" inlet. Is this right??? I assumed they would have a 3/8". Trying to use the customers pre-bent "factory" style fuel line from carb to pump or I would just put an aftermarket pump on it. Why would they make it with a 5/16" inlet and 3/8" outlet? Doesn't make sense to me. BTW, it's a factory A/C car also so I assume the pump should have a vapor return line. Thanks.
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#2
01-23-2010, 12:54 PM
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Factory fuel line from tank to pump is 5/16" and from pump to carb is 3/8 so it sounds like you have the right pump.
__________________
"I fishtail through the lanes, and I make my tires squeal. Power at my feet, and glory at the wheel. I wind the windows down, let the wind blow through my hair. God knows where I'm goin' to, but me... I don't care." |
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#3
01-23-2010, 02:41 PM
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Of course we have modified the pickup in the tank on our 67 race car but I would have sworn that it was 3/8" before. Oh well...
__________________
http://www.youtube.com/watch?v=t9eWgLd0q-U |
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#4
01-23-2010, 08:28 PM
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Actually, the pickup in the tank is 3/8", at least on my car it is, but the line from there to the pump is 5/16".
Depending on how early the car was built, the return line may have come from the filter (GF-98) rather than from the pump.
__________________
"I fishtail through the lanes, and I make my tires squeal. Power at my feet, and glory at the wheel. I wind the windows down, let the wind blow through my hair. God knows where I'm goin' to, but me... I don't care." |
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#5
01-23-2010, 10:32 PM
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Thanks for the info.
__________________
http://www.youtube.com/watch?v=t9eWgLd0q-U |
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#6
01-25-2010, 09:12 PM
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I just looked at a sending unit I bought for my '66 GTO from Ames many years back.I bought it because it had a 3/8 outlet instead of 5/16.I didn't get to measure it but the inlet/outlet is the same size,it looks bigger than stock.I will measure it soon.
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#7
01-25-2010, 10:08 PM
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Quote:
1967 - 3/8" 1966 - 5/16" The return line is not on the pump. A/C cars use a filter with a return nipple on it. This would go into your return line.
__________________
Tod Hoffmann 1966 GTO Montero Red Hardtop - Holley EFI'd 462, KRE DPorts/Muncie 4spd 1990 Chevy 454SS pickup - Accel DFI/T56 6spd - Hot Rod Power Tour Long Hauler 1996 Chevy K2500 ECSB 'Poopy' 2002 Honda VTX1800C 2016 Cadillac CTS Premium My project thread: http://forums.maxperformanceinc.com/...d.php?t=516826 
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#8
01-29-2010, 10:24 AM
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I measured the inlet and outlet and they are both 3/8.
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