clutch fan for 70 RR

[471b1dart]

can anyone tell me what clutch for the fan I need for my 70 RR, its a 383,4speed with 26" rad. Maybe it didnt come with one but would like to add one. Thanks in advance.sorry wrong section , moving to heating and cooling

 

[Jerry Hall]

https://www.tonysparts.com/all-parts/2806070-Fan-Clutch-Drive-Unit-Concours-Correct-p372008366

 

[F4R/T]

While the repop ones are similar they are different , they have extra spots on the mounting surface that could be drilled and tapped for different applications. I’ve noticed the GM guys are using the same one so you may look and compare and maybe even save. I have the one from Tony’s, it ok, Chinesuem ,I prefer a oem one.. As for as the Gm ones I’d make sure to compare apples to apples as I didn’t measure it but it had the same mount for the blade and I recognized it.

 

[RJRENTON]

https://www.tonysparts.com/all-parts/2806070-Fan-Clutch-Drive-Unit-Concours-Correct-p372008366

ABSOLUTELY THE CORRECT CLUTCH TO USE. It is a TORQUE drive design, that limits the fan RPM. Check out the other offerings on the site. Tony also offeres THERMAL drive types, that sense the air temp coming thru the radiator and adjust the fan's RPM that allows the fan to freewheel sooner or later. Either of these clutches require the use of the seven (7) blade fan assembly and the whole package will perform best when used with the addition of the fan shroud.
FYI....the torque drive fan clutch was used with the HEMI and 440 six barrel engines. The thermal drive fan clutch was used with A/C cars. Hayden also supplies thermal drive clutches but they work well but definitely look after market.....personally, i would use Tony's offerings....they look and perform like the origional.
BOB RENTON