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02-25-2009, 07:50 PM
#1
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Help Does more compresstion make more power and torque, and what do i have to do to get more compression. What kind of heads and pistons do i need. I have bbk intake, headers, p&p tb, lid on latter the cam is going in. The cam is a torquer 2 it 232/234 dur. 595. 598 lift 112 lsa
02-25-2009, 07:58 PM
#2
Yes, more compression will increase power. You can use any head you want you just need to have it milled down. This will give you a smaller combustion chamber thus increasing your CR. You have flat top pistons in the car stock. You can look into a domed piston for increasing CR as well. Lastly is using a thinner head gasket. Cometic makes a .040" head gasket that many use when trying to increase compression.
When increasing compression using any of the above ways you need to keep a very close eye on your piston to valve clearance, also, do you want to be able to run the car on pump gas or do you want to run a higher octane fuel? This needs to be taken into account as well. Will you be adding a power adder in the future or just running H/C? Blowers and turbos generally will need a lower CR while nitrous loves higher CR's.
When increasing compression using any of the above ways you need to keep a very close eye on your piston to valve clearance, also, do you want to be able to run the car on pump gas or do you want to run a higher octane fuel? This needs to be taken into account as well. Will you be adding a power adder in the future or just running H/C? Blowers and turbos generally will need a lower CR while nitrous loves higher CR's.
02-25-2009, 08:15 PM
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I will maybe add nos on pump gas . How much power will i make with the compresstion upgrade? And what do i do about the piston and valve clearance
02-25-2009, 08:19 PM
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Yes, more compression will increase power. You can use any head you want you just need to have it milled down. This will give you a smaller combustion chamber thus increasing your CR. You have flat top pistons in the car stock. You can look into a domed piston for increasing CR as well. Lastly is using a thinner head gasket. Cometic makes a .040" head gasket that many use when trying to increase compression.
When increasing compression using any of the above ways you need to keep a very close eye on your piston to valve clearance, also, do you want to be able to run the car on pump gas or do you want to run a higher octane fuel? This needs to be taken into account as well. Will you be adding a power adder in the future or just running H/C? Blowers and turbos generally will need a lower CR while nitrous loves higher CR's.
When increasing compression using any of the above ways you need to keep a very close eye on your piston to valve clearance, also, do you want to be able to run the car on pump gas or do you want to run a higher octane fuel? This needs to be taken into account as well. Will you be adding a power adder in the future or just running H/C? Blowers and turbos generally will need a lower CR while nitrous loves higher CR's.
NOS AND PUMP GAS IT WILL BE DD. HOW MUCH POWER WILL I MAKE WITH THE COMPRESSTION UPGRADE. AND WHAT DO I DO ABOUT THE PISTON AND VALVE CLEARUNCE.
02-26-2009, 12:08 AM
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I would not waste time trying to get power by increasing the compression ratio. These engines already need high octane fuel, a higher compression ratio will just make it worse. If you are changing the heads and using the cam you mentioned I'd recomend a ported set of 5.3 heads and thinner headgaskets. Together they should get you almost 11:1 CR. The extra overlap of that cam will need a little more compression to run properly.
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