overheat at idle
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Junior Member
Joined: May 2015
Posts: 1
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overheat at idle
Im getting frustrated, swapped out 305 tbi for a carbed 305, starts right up, but overheats quick, but I just noticed today if i rev it up to say 2000 rpm's the temperature drops, do i have a bad water pump ? The wrong style water pump ? When I let off the gas it immediately heats right back up. Timing seems ok, also when I rev it up.......the upper radiator hose collapses a little as the rpm's go back down.
Member
Joined: Apr 2015
Posts: 467
Likes: 8
From: Waldron Arkansas
Car: 1986 IROC Z28
Engine: Carburated small block 454
Transmission: Level 3 Raptor 700R4 2600 stall
Axle/Gears: Strange S60 3:73 S Trac Posi
Re: overheat at idle
Sounds like the radiator isn't flowing as it should, may try having it flushed and if that don't work you may wind up replacing it.
Supreme Member
Joined: Jan 2009
Posts: 2,313
Likes: 115
From: belle fourche,s.d.
Car: '82 z28
Engine: L83 5.7
Transmission: 700r4-1985
Axle/Gears: 3.42 posi
Re: overheat at idle
wrong rotation water pump could cause that-they will pump the correct direction,but very weak flow if turning wrong rotation.
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