200 amp Alternator for A/C - ZR-1 Net Registry Forums

Corvette95 · 09-01-2023

I have done all the upgrades that is in Marc Haibeck's sight except the alternator upgrade. Last time I removed the alternator I don't think I had to remove the plenum just the alternator bracket... is that correct? Also, has anyone tried a blower from a different GM product? I would think the blower would be a traditional GM style mount. Wonder if there is a higher speed blower motor that's is a direct fit?

secondchance · 09-01-2023

If you do not remove the plenum, you need to remove the air horn in front of the plenum to access the alternator.
I do not know of higher performance blower. However, adding additional wire to the blower and increased amperage of the alternater, I noticed, speeds up the blower motor.

Corvette95 · 09-01-2023

Quote:

Originally Posted by secondchance

If you do not remove the plenum, you need to remove the air horn in front of the plenum to access the alternator.
I do not know of higher performance blower. However, adding additional wire to the blower and increased amperage of the alternater, I noticed, speeds up the blower motor.

Thanks, yeah, I remember pulling the air horn as soon as you said it. I already have the additional power line to the blower. I may go to a salvage yard and see if one from something like a Tahoe fits. Thanks

secondchance · 09-02-2023

If you go to 200 amp alternator, you will have to upgrade alternator to battery cable and might as well pull the plenum. Much easier to work on.

09-01-2023	#1
Corvette95 Join Date: Jan 2006 Location: Decatur, AL Posts: 1,119	200 amp Alternator for A/C I have done all the upgrades that is in Marc Haibeck's sight except the alternator upgrade. Last time I removed the alternator I don't think I had to remove the plenum just the alternator bracket... is that correct? Also, has anyone tried a blower from a different GM product? I would think the blower would be a traditional GM style mount. Wonder if there is a higher speed blower motor that's is a direct fit? __________________ Corvette95 Registry and Forum (*************) 1989 C4 Conv Wht/Gry Auto Hardtop Top Flight SOLD 1995 C4 Coupe Purple/Blk 6 Speed 1989 C4 Conv Wht/Red Auto SOLD 1996 C4 Conv Black/Tan Auto SOLD 1994 C4 Coupe Wht/Blk SOLD 1995 C4 ZR-1 White/Gry #278 Dual Dunn Head SOLD 1986 C4 Coupe Black/Red 4+3 SOLD 1990 C4 ZR-1 Red/Red #0454

09-01-2023	#2
secondchance Join Date: Aug 2006 Location: McLean, VA Posts: 3,723	Re: 200 amp Alternator for A/C If you do not remove the plenum, you need to remove the air horn in front of the plenum to access the alternator. I do not know of higher performance blower. However, adding additional wire to the blower and increased amperage of the alternater, I noticed, speeds up the blower motor.

09-02-2023	#4
secondchance Join Date: Aug 2006 Location: McLean, VA Posts: 3,723	Re: 200 amp Alternator for A/C If you go to 200 amp alternator, you will have to upgrade alternator to battery cable and might as well pull the plenum. Much easier to work on.