engine swap cooling problems?
Thread Starter
Junior Member
Joined: Feb 2008
Posts: 61
Likes: 0
From: Salt Lake City
Car: 90 Z28, 74 Scout II
Engine: healthy 355
Transmission: t-5
Axle/Gears: 4th gen 10 bolt 3.23
engine swap cooling problems?
I just did a 305 to 355 tbi swap, anyone had any cooling issues with the stock radiator after you swapped? My 90 camaro rns way hot now, never did before...?
On Probation
Joined: Oct 2008
Posts: 6,319
Likes: 19
From: Northern Utah
Car: seeking '90.5-'92 'bird hardtop
Engine: several
Transmission: none
Axle/Gears: none
Re: engine swap cooling problems?
the stock 305 low-output radiator is adequate for most 350s. The number one cause of overheating is not having that second airdam under the radiator. Without it, the hot air goes under the radiator, and comes through the bottom half of the rad over and over again, getting hotter and hotter. Plus the airdam is also supposed to be scooping fresh cool air up to the radiator. Get the pic?
If that's good, then check your rad. fan. If that's good, pull the thermostat, and drill a 1/16" steam hole in it. Did you switch water pumps or pulleys? If you're running a serpentine pump with a v-belt pulley, or vice versa, it'll never circulate any coolant.
If that's good, then check your rad. fan. If that's good, pull the thermostat, and drill a 1/16" steam hole in it. Did you switch water pumps or pulleys? If you're running a serpentine pump with a v-belt pulley, or vice versa, it'll never circulate any coolant.
Thread
Thread Starter
Forum
Replies
Last Post
theshackle
Tech / General Engine
4
Mar 5, 2017 06:37 PM
