94 chevy k1500

tiffyk · 03-04-2008, 09:40 PM

need help my buddy has a 94 k1500 with a 383 stroker block is between 74'-79'. he has replaced water pump, sending unit sensor and stat. it had no heat now it does and its pegging hot bout 240 anyone know what else it could be? the stat is opening but he can not figure it out. could it be the fan clutch?

Hayden · 03-05-2008, 12:24 PM

Does the fan spin? Why not free up a couple of ponies and go with electric fans. Is the shroud still on it or was that removed? Is the Temp gauge lying to you? could be a number of reasons.

436'd skylark · 03-08-2008, 09:31 AM

the motor is fresh? might have some bad gaskets, or the timing could be way retarded.

gmctrucks · 03-08-2008, 10:53 AM

I agree with skylark gaskets might be bad or backwards on the heads or intake mostly check timing also check to see if water hoses are collaping is the fan blade put on the way it could be reverse or they sold you wrong water pump wrong rotation get back to us on what it was it might just be that radiator is clogged.

stumpuller454 · 03-11-2008, 04:50 PM

does it have the srock fan? or does it have the racing type flex fan, those are useless for a daily driver, recommend race only, my buddies 502 just had same problem, turned out the flex fan couldn`t move enough air for driving around town, just a thought...

03-04-2008, 09:40 PM	#1
tiffyk Junior Member Join Date: Mar 2008 Posts: 1	94 chevy k1500 need help my buddy has a 94 k1500 with a 383 stroker block is between 74'-79'. he has replaced water pump, sending unit sensor and stat. it had no heat now it does and its pegging hot bout 240 anyone know what else it could be? the stat is opening but he can not figure it out. could it be the fan clutch? Last edited by tiffyk; 03-04-2008 at 10:31 PM.

03-05-2008, 12:24 PM	#2
Hayden Senior Member Join Date: May 2006 Location: Bay City,Michigan Posts: 387	Does the fan spin? Why not free up a couple of ponies and go with electric fans. Is the shroud still on it or was that removed? Is the Temp gauge lying to you? could be a number of reasons. __________________ There Is No Replacement For Displacement

03-08-2008, 09:31 AM	#3
436'd skylark Senior Member Join Date: Mar 2007 Location: Pennsyltucky Posts: 1,000	the motor is fresh? might have some bad gaskets, or the timing could be way retarded. __________________ Joe 89 K2500 Chevy, Wee-Oh-five 294K miles 1962 Scout 80 parts I guess 1966 Scout 800 resto job 2005 Chevy 2500HD Short cab long box DURAMAX 1996 P30, 6.5 NA Mac Mobile whole lot of buicks

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03-08-2008, 10:53 AM	#4
gmctrucks Senior Member Join Date: Nov 2006 Location: Houston,Texas Posts: 4,646	I agree with skylark gaskets might be bad or backwards on the heads or intake mostly check timing also check to see if water hoses are collaping is the fan blade put on the way it could be reverse or they sold you wrong water pump wrong rotation get back to us on what it was it might just be that radiator is clogged.

03-11-2008, 04:50 PM	#5
stumpuller454 Senior Member Join Date: Dec 2007 Location: Grande Prairie, AB Posts: 2,206	does it have the srock fan? or does it have the racing type flex fan, those are useless for a daily driver, recommend race only, my buddies 502 just had same problem, turned out the flex fan couldn`t move enough air for driving around town, just a thought...