Early versus late 1974 |
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Early versus late 1974 |
Lockwodo |
Jan 19 2022, 07:47 PM
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#1
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Member Group: Members Posts: 199 Joined: 23-December 21 From: Santa Cruz, Californnia Member No.: 26,193 Region Association: Northern California |
Would anyone happen to know what the breakpoint in VIN #s is for "early" 1974 versus "late" 1974 914s?
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JeffBowlsby |
Jan 19 2022, 08:44 PM
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#2
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914 Wiring Harnesses Group: Members Posts: 8,492 Joined: 7-January 03 From: San Ramon CA Member No.: 104 Region Association: None |
I have owned both 'early and late' '74 2.0Ls.
Do not know of a definitive list of changes, nor the VIN inflection point which seems to be a progressive set of dates depending on the change, not a single date. The factory parts manual may indicate changes to spcific parts associated with a VIN. Some differences: -silver center gauges changed to black center gauges -charcoal canister relocated from fuel tank to engine bay rear wall -carpeting changed from solid colors to 'salt and pepper' patterns -a brief period of a few weeks in Spring of 74 when grey headlight relay covers were installed -fuel expansion chamber and fuel tank cap changed from metal to plastic Interestingly, the Can Am cars produced in the Spring of 74 include a range of these changes. Thats all I can think of right now. |
Lockwodo |
Jan 22 2022, 08:09 AM
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#3
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Member Group: Members Posts: 199 Joined: 23-December 21 From: Santa Cruz, Californnia Member No.: 26,193 Region Association: Northern California |
I have owned both 'early and late' '74 2.0Ls. Do not know of a definitive list of changes, nor the VIN inflection point which seems to be a progressive set of dates depending on the change, not a single date. The factory parts manual may indicate changes to spcific parts associated with a VIN. Some differences: -silver center gauges changed to black center gauges -charcoal canister relocated from fuel tank to engine bay rear wall -carpeting changed from solid colors to 'salt and pepper' patterns -a brief period of a few weeks in Spring of 74 when grey headlight relay covers were installed -fuel expansion chamber and fuel tank cap changed from metal to plastic Interestingly, the Can Am cars produced in the Spring of 74 include a range of these changes. Thats all I can think of right now. As I compared the "early" and "late" vacuum diagrams to my '74 2.0, I noticed that the throttle body on my car only has one vacuum port, and it looks like this port is intended to be connected to the retard vacuum port on the distributor advance can (but the previous owner left it disconnected). The advance vacuum port on the distributor advance can is just sitting there open with nothing to connect to. So my questions are 1) does the distributor vacuum advance can port not need to be connected to a source of vacuum?, 2) should the existing hose from the throttle body vacuum port be connected to the distributor retard can port, or does it matter?, 3) should I find a throttle body with two vacuum ports and connect both to the distributor advance can? As it sits, the car seems to run and accelerate fine without vacuum to the distributor advance or retard. Thanks, Doug |
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