Hi everyone, I am new to this site- but have owned my 70 Cuda 383 since 1979.
I bought the car in 1979 minus the engine , I located a 383 replacement and installed it (using some help from backyard mechanics) I obtained at that time a bellhousing "cast iron one" and a matching 11 in flywheel/clutch set up.
Then the trouble began, I could'nt seem to get the clutch fork to operate in an arc that would not quickly wear out the bushing in the fork-it seemed to move too far back to the rear of the car and swing inwards towards the transmission , so I located an aluminum bellhousing (cast#2892513) and a smaller diameter flywheel and switched the clutch to a 10 1/2 diameter. I also replaced the fork and pivot with new correct mopar #'s at that time-wow over 30 yrs ago!
Still the same problem, I then referred to my build sheet and have determined that the car was spec'd with the HD clutch as original equipment -which is 10.950 diameter,(the 440's all used 11"). I believe I will still use the same flywheel as my 10 1/2 -as the bolt circle spec on the 10.950 measures the same, but my feeling is that the bellhousing is still wrong- the chrysler parts book says the replacement unit should be #2892511 -for all r/rb engines this year-odd since the 440 takes a real 11" clutch.
Am I looking at part#'s vs casting#'s, or is all the info I see on the net wrong? everywhere I see bellhousings for sale and they are the #2892513 and is listed for 440's and 383's with a 10 1/2in clutch.
What is the difference between #2892511 and #2892513 ?
The internet states that cast#2892511 is drilled for two different transmissions, well in fact so is the cast#2892513 that I have.
In addition, I have ordered 3 different brand clutches recently from 3 different sources -all claiming to be 10.950 dia in their catologs -but when you measure them they all measure 10 3/8 dia- and all have identical markings like they are from the same mfgr- in china.
I have ordered the Ram kit now as it states both sizes with two distinct different part#'s-hopefully that will measure correct.
Any thoughts here? I'm out of ideas-thank you so much for any help.
mike
I bought the car in 1979 minus the engine , I located a 383 replacement and installed it (using some help from backyard mechanics) I obtained at that time a bellhousing "cast iron one" and a matching 11 in flywheel/clutch set up.
Then the trouble began, I could'nt seem to get the clutch fork to operate in an arc that would not quickly wear out the bushing in the fork-it seemed to move too far back to the rear of the car and swing inwards towards the transmission , so I located an aluminum bellhousing (cast#2892513) and a smaller diameter flywheel and switched the clutch to a 10 1/2 diameter. I also replaced the fork and pivot with new correct mopar #'s at that time-wow over 30 yrs ago!
Still the same problem, I then referred to my build sheet and have determined that the car was spec'd with the HD clutch as original equipment -which is 10.950 diameter,(the 440's all used 11"). I believe I will still use the same flywheel as my 10 1/2 -as the bolt circle spec on the 10.950 measures the same, but my feeling is that the bellhousing is still wrong- the chrysler parts book says the replacement unit should be #2892511 -for all r/rb engines this year-odd since the 440 takes a real 11" clutch.
Am I looking at part#'s vs casting#'s, or is all the info I see on the net wrong? everywhere I see bellhousings for sale and they are the #2892513 and is listed for 440's and 383's with a 10 1/2in clutch.
What is the difference between #2892511 and #2892513 ?
The internet states that cast#2892511 is drilled for two different transmissions, well in fact so is the cast#2892513 that I have.
In addition, I have ordered 3 different brand clutches recently from 3 different sources -all claiming to be 10.950 dia in their catologs -but when you measure them they all measure 10 3/8 dia- and all have identical markings like they are from the same mfgr- in china.
I have ordered the Ram kit now as it states both sizes with two distinct different part#'s-hopefully that will measure correct.
Any thoughts here? I'm out of ideas-thank you so much for any help.
mike
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