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#1
05-25-2015, 09:44 PM
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Engine temp concerns
Ok, got a head scratcher here. A stroked 400 to a 461. My old cam and head combination was 9.5:1 #46 heads flowing 250CFM with the SD Stump puller cam. I had a short snout stamped impeller water pump that I clearance the divider plate on, and this engine would NEVER get above 180 deg. Now, I have swapped to Kauffman D-ports flowing 305CFM,10.6:1CR using the "Old Faithful" cam, and I have changed to a long snout cast impeller water pump. I also clearanced the divider plate, but this darn thing wants to stay at 200-220. It may be running a little lean, but I did some carb work on it today which improved it a little, but it is still running warmer than I like. I am running only water in the system right now, with a regular 180 thermostat.
Timing is 10 initial, 32 total Any suggestions on where to start looking for the problem?
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461 Cu. In. Pure Pontiac Power: 1969 Pontiac GTO - Back On Top - Popular Hot Rodding Magazine Last edited by 69*Goat; 05-25-2015 at 10:05 PM. |
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