Follow-up on this topic:
Through my investigation thus far, I have arrived at the
following. If anything is incorrect, please clarify for
me.
1) It appears that the 4346 Holley did not incorporate the
use of a special throttle arm for THM400 applications.
No one can attest to the existence of another part number
for a 4346 throttle arm. So, manual and automatic cars
used the same carb. - correct?
2) It appears that the idle stop solenoid used the bracket
that mounted to the intake manifold with two studs.
Every L/78 & COPO example I can find uses that same
setup. I have looked at Camaro's, Chevelles, and Nova's.
Has any member seen an original setup the differs?
3) The first reply to my initial question includes an
image of a COPO Chevelle restoration. The 4346 throttle
arm clearly shows the existance of a ball stud. My 4346
for my Camaro does not have this stud. So, how can they
both be 4346's? Is there a separate part number for the
Chevelle throttle arm vs. the Camaro & Nova throttle arm?
Questions yet to be resolved:
1) If the ZL-1 used the same idle stop solenoid and kickdown
setup as was used on L/78 & COPO Camaro's, was there any
difference in relation to the 4296 Holley that was
used with the ZL-1? I'm betting that the 4296 had a
very different throttle arm. Does anyone here have a
good, clear image of a ZL-1 w/THM400 carb/solenoid
assembly?
2) Two ZL-1 Corvettes were also produced. I believe they
also used 4296 Holleys, as did the L-88's - correct?
Didn't the Vettes use throttle cables and thus a ball
stud on the carbs throttle arm? As we know, the 69
Camaro used a throttle rod, so no ball stud was needed.
Was the ball stud installed on all 4296 carbs anyway?
If not, wouldn't that indicate a separate part number
for Vette vs. Camaro? How does this fit in with the
4346 throttle arm observation?
3) Most ZL-1's were mid-year productions - right? I have
been told that a few early ZL-1 Camaros were produced in
January. It was also started to me that 4296 Holley's
have not been found with dates that would support a
January build. Can anyone dispute this? Lastly, did
all ZL-1's use the 4296 Holley? Were the early ZL-1's
possibly all manual transmission cars anyway?
This just keeps going, and going, and.....
Steve