need advice

chevy boy · 07-11-2009, 01:14 PM

I have a 95 chevy caprice (lt1) and I'm about to getting the heads done should I get something special done when I take them to the machine shop

MrSS · 07-11-2009, 01:45 PM

Good question, I was wondering the same thing. My research states that the heads, other than being Cast Iron as apposed to Aluminum on the Corvette, Camaro and Trans Am, do support modifications but is that with a full Hog treatment or light working.

Let's hope someone answers your question.

TTT

chevy boy · 07-12-2009, 10:34 AM

I was wondering should I buy better head or beef up the old 1s and should I get the motor rebuilt. Know very lil about cars all info would be helpful.

dintymoore · 07-12-2009, 12:44 PM

Out of interest why are you getting the heads worked on and what's the mileage?

chevy boy · 07-12-2009, 01:03 PM

The car is running hot when I took it to the shop they said it was my head but the water is not mixing with the oil and the car is not misfiring I changed every thing else but the all the hoses the previous owner took it 2 the shop and they told him the same thing it has 159,000

dintymoore · 07-12-2009, 01:44 PM

Have you ruled out the common causes for overheating like the thermostat, water pump, radiator or timing etc? Does it overheat all the time, when it's just idling or only when you push it, like up a long hill?

Can't help but smell fish...

chevy boy · 07-12-2009, 02:18 PM

yes I ruled out all the common causes and it only runs hot when I pushing it at about 80 mph and let up off the pedal other than that the car runs fine the only changed I didnt do r the hoses (I still have the green ones)

dintymoore · 07-12-2009, 03:18 PM

Just checking, I was wondering what led to the thinking that the heads need rebuilt.

I did have a 70's Cutlass that showed no outward signs other than overheating and when I redid the head gasket it solved the problem.

When the car is up to temperature (meaning the thermostat is open), if you squeeze the upper rad hose it should be hard not mushy... that's one method of checking the water pump.

My thoughts are in the direction that it's more likely something like the water pump/clogged rad than a head problem, especially when you say it happens when you let off of the gas, which is when the water pump puts out less. If it was the heads wouldn't it happen when you were pushing it, not after when you let off the gas?

Gregg-O · 07-13-2009, 04:21 AM

Bleed the system and make sure your fans are working. After that, throw a new stat in it.

chevy boy · 07-13-2009, 10:29 AM

I have changed and did all of these things before I took it to the shop so Im going to have the heads did any advice on having anything extra done 2 the heads when I take them the machine shop oh and thx 4 all the advice

07-11-2009, 01:14 PM	#1 (permalink)
chevy boy Junior Member Join Date: Jul 2009 Location: atl,GA Posts: 7	need advice I have a 95 chevy caprice (lt1) and I'm about to getting the heads done should I get something special done when I take them to the machine shop __________________ Looking for Impala parts? Try The Chevy Impala SS Forums - Impala Store!

07-11-2009, 01:45 PM	#2 (permalink)
MrSS Junior Member Join Date: Jul 2009 Posts: 11	Good question, I was wondering the same thing. My research states that the heads, other than being Cast Iron as apposed to Aluminum on the Corvette, Camaro and Trans Am, do support modifications but is that with a full Hog treatment or light working. Let's hope someone answers your question. TTT __________________ Looking for Impala parts? Try The Chevy Impala SS Forums - Impala Store! Last edited by MrSS : 07-11-2009 at 03:17 PM.

07-12-2009, 10:34 AM	#3 (permalink)
chevy boy Junior Member Join Date: Jul 2009 Location: atl,GA Posts: 7	I was wondering should I buy better head or beef up the old 1s and should I get the motor rebuilt. Know very lil about cars all info would be helpful. __________________ Looking for Impala parts? Try The Chevy Impala SS Forums - Impala Store!

07-12-2009, 12:44 PM	#4 (permalink)
dintymoore Senior Member Join Date: Jan 2009 Location: Oahu Posts: 431	Out of interest why are you getting the heads worked on and what's the mileage? __________________ Looking for Impala parts? Try The Chevy Impala SS Forums - Impala Store!

07-12-2009, 01:03 PM	#5 (permalink)
chevy boy Junior Member Join Date: Jul 2009 Location: atl,GA Posts: 7	The car is running hot when I took it to the shop they said it was my head but the water is not mixing with the oil and the car is not misfiring I changed every thing else but the all the hoses the previous owner took it 2 the shop and they told him the same thing it has 159,000 __________________ Looking for Impala parts? Try The Chevy Impala SS Forums - Impala Store!

07-12-2009, 01:44 PM	#6 (permalink)
dintymoore Senior Member Join Date: Jan 2009 Location: Oahu Posts: 431	Have you ruled out the common causes for overheating like the thermostat, water pump, radiator or timing etc? Does it overheat all the time, when it's just idling or only when you push it, like up a long hill? Can't help but smell fish... __________________ Looking for Impala parts? Try The Chevy Impala SS Forums - Impala Store!

07-12-2009, 02:18 PM	#7 (permalink)
chevy boy Junior Member Join Date: Jul 2009 Location: atl,GA Posts: 7	yes I ruled out all the common causes and it only runs hot when I pushing it at about 80 mph and let up off the pedal other than that the car runs fine the only changed I didnt do r the hoses (I still have the green ones) __________________ Looking for Impala parts? Try The Chevy Impala SS Forums - Impala Store!

07-12-2009, 03:18 PM	#8 (permalink)
dintymoore Senior Member Join Date: Jan 2009 Location: Oahu Posts: 431	Just checking, I was wondering what led to the thinking that the heads need rebuilt. I did have a 70's Cutlass that showed no outward signs other than overheating and when I redid the head gasket it solved the problem. When the car is up to temperature (meaning the thermostat is open), if you squeeze the upper rad hose it should be hard not mushy... that's one method of checking the water pump. My thoughts are in the direction that it's more likely something like the water pump/clogged rad than a head problem, especially when you say it happens when you let off of the gas, which is when the water pump puts out less. If it was the heads wouldn't it happen when you were pushing it, not after when you let off the gas? __________________ Looking for Impala parts? Try The Chevy Impala SS Forums - Impala Store!

07-13-2009, 04:21 AM	#9 (permalink)
Gregg-O Senior Member Join Date: Mar 2008 Location: Phoenix Posts: 550	Bleed the system and make sure your fans are working. After that, throw a new stat in it. __________________ Looking for Impala parts? Try The Chevy Impala SS Forums - Impala Store!

07-13-2009, 10:29 AM	#10 (permalink)
chevy boy Junior Member Join Date: Jul 2009 Location: atl,GA Posts: 7	I have changed and did all of these things before I took it to the shop so Im going to have the heads did any advice on having anything extra done 2 the heads when I take them the machine shop oh and thx 4 all the advice __________________ Looking for Impala parts? Try The Chevy Impala SS Forums - Impala Store!

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