Correct fan for 1974 Corvette LS4 w/a/c

[Gary C.]

[Patrick H.]

Re: Correct fan for 1974 Corvette LS4 w/a/c

Also can anyone recommend a Fan Clutch which will suite this engine combo?

AC Delco 15-4950 should do the job.
https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1

[Joe L.]

Re: Correct fan for 1974 Corvette LS4 w/a/c

Gary------


The GM #342715 is the correct fan blade for your application. Your description of the fan blade assembly you have is exactly consistent with the 342715. In fact, I know of no other fan blade assembly which has the rectangular "notch" on each blade.

The original fan clutch for your application was GM #343721. The fan clutch that Patrick linked in his post is the current replacement for the original fan clutch and is virtually identical to it. The primary visual difference is that the original clutch had only 4 bolt holes in the flange while the current version has 8 holes (so it can be used for both small and large hub bolt patterns). These fan clutches also happen to be the best performing fan clutches ever installed on a Corvette.

[Gary C.]

Re: Correct fan for 1974 Corvette LS4 w/a/c

Thanks very much for your input Gents.

[Scott O.]

Re: Correct fan for 1974 Corvette LS4 w/a/c

Good morning Joe,
Will this fan clutch work/ cool properly on all small blocks thru out the 70's?
Thanks, Scott

[Joe L.]

Re: Correct fan for 1974 Corvette LS4 w/a/c

Good morning Joe,
Will this fan clutch work/ cool properly on all small blocks thru out the 70's?
Thanks, Scott

Scott------


It will work without any problems or modifications on any 1971-82 Corvette. Pre-1971 will require the use of a 1971+ fan blade + a 5/8" to 3/4" bushing for the pilot (bushing is often supplied with the fan clutch).