75gmck25's latest activity
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75gmck25 replied to the thread Source for rear AC fittings?.When I had my new A/C hoses built they found that GM used a larger diameter hose fitting than normal for the evaporator connection... -
75gmck25 replied to the thread 82 C10 EFI Conversion project.Is there some reason you want to use electric fans? I have the OEM 7 blade metal fan, severe duty fan clutch, aluminum 3 row...
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75gmck25 replied to the thread NP203 leaking. Replace or fix?.I know just enough about 203s to be dangerous, so my point was to just be sure what you’re buying. I am not an authority. It may be...
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75gmck25 replied to the thread NP203 leaking. Replace or fix?.Just make sure you are buying a used NP203 configured for a squarebody GM truck and with your same transmission. All three major...
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75gmck25 replied to the thread Booster shocks?.A kit like this is usually easy to install, but more designed to stop sag than to give a lift...
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75gmck25 replied to the thread Source for rear AC fittings?.AFAIK, '74 was about the last year they used an expansion valve system on the squarebody trucks. My '75 has an orifice tube/holder for...
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75gmck25 replied to the thread Am I Crazy? Lincoln Drive Train Swap.The Ford 460 has cubic inches, but it’s a Mom and Pop cruiser engine without much potential. It never came in a factory high performance...
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75gmck25 replied to the thread Tailpipe search.In the old days the muffler shops had a big parts book with diagrams of all the stock muffler systems. I think it gave them most of the...
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75gmck25 replied to the thread Alternator amps.Good point - the current 10si (or its wiring) is bad, and the simplest fix might be just to use a direct replacement. Alternator...
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75gmck25 replied to the thread Alternator amps.The CS130 and equivalent are excellent, but are a slightly different form-factor and wiring than the old 10si. Not a big job to adapt...
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75gmck25 replied to the thread 87' a/c brackets.Old R4 compressors are not great. Look for a kit to adapt a Sanden or Seltec and get the brackets they use.
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75gmck25 replied to the thread New memeber old mechanic 73 chevy 350.Welcome! Check the rear end to see if it’s a 14 bolt FF, which are used on the high GVW C20’s. Brake work on a FF is harder because...
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75gmck25 replied to the thread Vortec Head Timing With Progression Ignition.Vacuum advance is not related to performance tuning, since as soon as you open the throttle the vacuum will drop and the vacuum advance...
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75gmck25 replied to the thread 1980 C10 Cruise Control Switch 407437.Most common brand is probably Rostra, but Iditit and Dakota Digital also have them. Problem is that they are about $400 and up. GM...
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75gmck25 replied to the thread 75 Chevy SWB 4x4 adding a saddle fuel tank on driver's side.It’s a relatively easy mod once you get the parts. The fuel filler hose is not very flexible, so it has to match the filler setup (hole...
