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73-87 Chevy _ GMC Trucks => Engine/Drivetrain => Topic started by: olblue2 on August 06, 2009, 11:15:48 am

Title: do i have the right fan?
Post by: olblue2 on August 06, 2009, 11:15:48 am

anyone here know what water pump fans came stock on a 1977 k-20 4x4 with 350?  mine has a 4 blade fixed fan,  seems kinda small     anyone know?

Title: Re: do i have the right fan?
Post by: Stewart G Griffin on June 15, 2014, 05:29:04 pm

i know the post is 4 yrs old, but this 4 blade fan fixed blade does sound right for a 77 350 engine.

Title: Re: do i have the right fan?
Post by: VileZambonie on June 15, 2014, 06:19:24 pm

No those came with a 6 blade clutch fan. The difference is in the fan clutch one for heavy duty cooling and the other for standard cooling.

Title: Re: do i have the right fan?
Post by: Stewart G Griffin on June 15, 2014, 09:23:01 pm

Ok, i just wanted to say my  former 79 blazer had a 4 blade fixed.  It was a 350.

Title: Re: do i have the right fan?
Post by: 6wt on February 21, 2015, 10:48:00 am

I have a five blade fan with thermal clutch on a 84 c10 305/700r4.  Is that the correct fan blade?  It looks like it was made that way.