383 question .

Automotive powered airboat discussion.
Post Reply
SEMPERFI77
Southern Airboat Member
Posts: 253
Joined: Thu Feb 18, 2010 10:16 pm

383 question .

Post by SEMPERFI77 »

Ok, all you motor guys, gotta 383 new just broke in. Left sides hotter than the right? Broke it in with a 650 Holley. Could the size of the carb. Cause that?
ptillman
Southern Airboat Member
Posts: 678
Joined: Mon May 10, 2010 5:09 pm
Location: North Florida

Re: 383 question .

Post by ptillman »

Sounds more like a cooling issue. The fuel mixture or timing, would not cause it to happen on one side of the motor. Sounds like a coolant flow issue.
2014 14x8 JB Hull,421 SBC, Rotator 2.68:1, 82" NGR
12' Thurman, o470 angle valve, 72" WhirlWind Prop (SOLD)
13' Hamant, 383 Chevy, Blue Lightning Drive, 80" R 3 Blade (SOLD)
gyrocopter582
Southern Airboat Member
Posts: 505
Joined: Thu Mar 07, 2013 5:05 pm
Location: 3/4 mile due east of the north tip of Lake Washington, Melbourne Florida.

Re: 383 question .

Post by gyrocopter582 »

Semperfi77, are you talking about cylinder head temp, or exhaust gas temp?
In theory, both sides of the block get equal water flow from the water pump.
It goes up through the heads, into the crossover in the front of the intake,
past the thermostat, and out to the radiator. Do you have a thermostat?
Did you use the 'restricters' in the intake gasket water passage position?
"Amaze your friends, annoy your neighbors"
Blackcoffee
Site Supporter - IV
Site Supporter - IV
Posts: 281
Joined: Tue Nov 24, 2009 10:17 pm

Re: 383 question .

Post by Blackcoffee »

Maybe do a compression test and see if it's off you may have to adjust a lifter or two. I have seen that before.
GTO 14' Deckover
ptillman
Southern Airboat Member
Posts: 678
Joined: Mon May 10, 2010 5:09 pm
Location: North Florida

Re: 383 question .

Post by ptillman »

gyrocopter582 wrote:Semperfi77, are you talking about cylinder head temp, or exhaust gas temp?
In theory, both sides of the block get equal water flow from the water pump.
It goes up through the heads, into the crossover in the front of the intake,
past the thermostat, and out to the radiator. Do you have a thermostat?
Did you use the 'restricters' in the intake gasket water passage position?
If you have a blockage in the block, it will isolate one side of the engine.
2014 14x8 JB Hull,421 SBC, Rotator 2.68:1, 82" NGR
12' Thurman, o470 angle valve, 72" WhirlWind Prop (SOLD)
13' Hamant, 383 Chevy, Blue Lightning Drive, 80" R 3 Blade (SOLD)
User avatar
JAMES
Site Supporter - II
Site Supporter - II
Posts: 8569
Joined: Wed Aug 22, 2007 10:31 pm
Location: cocoa
Contact:

Re: 383 question .

Post by JAMES »

dead cylinders will do it as well
https://m.facebook.com/321ccc/?ref=bookmarks Wp383 268 rotator 3 bld WT/EX 14.4 perdator
ptillman
Southern Airboat Member
Posts: 678
Joined: Mon May 10, 2010 5:09 pm
Location: North Florida

Re: 383 question .

Post by ptillman »

JAMES wrote:dead cylinders will do it as well
It hard to get all the dead cylinders to be on the same side of the motor. Remember he said it was one side, and not one cylinder.
2014 14x8 JB Hull,421 SBC, Rotator 2.68:1, 82" NGR
12' Thurman, o470 angle valve, 72" WhirlWind Prop (SOLD)
13' Hamant, 383 Chevy, Blue Lightning Drive, 80" R 3 Blade (SOLD)
Post Reply

Return to “Automotive Power Only”