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Three Groove Pulleys for 70 390 |
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SANCAPJJ
AMC Addicted Joined: Jan/14/2009 Location: US Status: Offline Points: 934 |
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Posted: May/21/2021 at 9:43am |
Can anybody advise me on what combination of 3 groove pulleys I need to source to put aftermarket vintage air in my 70 Javelin? I would like to run the standard water pump and 7 blade fan/shroud. The vintage air setup has a two groove compressor. I have an original compressor mount and idler pully. I know there is a difference with the 4 and 3 bolt crank pulley. Did AMC make a three grove - 3 bolt crank pulley? If yes - what year 3 groove water pump pulley lines up?
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304-dude
AMC Addicted Joined: Sep/29/2008 Location: Central Illinoi Status: Offline Points: 9081 |
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Technically you just need one groove on the compressor. 71 to 74 only used one groove. Its not a 72 only thing to use 2 grooves.
Just use the groove that aligns with your existing setup. I bet the reason they use a two groove is for cross compatibility for all years, and jeeps. |
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71 Javelin SST body
390 69 crank, 70 block & heads NASCAR SB2 rods & pistons 78 Jeep TH400 w/ 2.76 Low 50/50 Ford-AMC Suspension 79 F150 rear & 8.8 axles Ford Racing 3.25 gears & 9" /w Detroit locker |
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ramblinrev
Moderator Group Joined: Dec/28/2008 Location: Wisconsin Status: Offline Points: 11472 |
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I gotta think about if AMC made a 3 groove, 3 bolt pulley for the 67-72 engines? I know they did for the '73 and up (4 bolt).
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74 Hornet Hatchback X twins (since 1977)
62 American Convertible (still worth the $50 I spent in 1973!) AMCRC #513, AMO #384 70 AMX 360 4-speed (since 1981) |
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BU1
AMC Addicted Joined: Aug/11/2016 Location: MN Status: Offline Points: 1973 |
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My 67-72 book shows 1 lower pulley part # for all V/8.
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AMO #2726
#1 1968 AMX Rally Green 343 Z code 4spd since 1975 #02642 #2 1968 AMX Rally Green 290 N code 4spd since 2019 #02959 |
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SANCAPJJ
AMC Addicted Joined: Jan/14/2009 Location: US Status: Offline Points: 934 |
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Thanks Guys!!!!
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