thats what i was thinking
Supercharger with 11.2:1 compression
Thread Starter
Pro
Joined: May 2005
Posts: 710
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From: Northfield Center Ohio
Supercharger with 11.2:1 compression
Is is still possible to run a Supercharger with 11.2:1 Compression even at very low boost pressure? I have a Stock bottom end, Lingenfelter Ported Heads, Crane Cam, 90mm Fast Intake, 538 RWHP with 75 hp NOS. I dont want to have to fill the bottle all the damn time and would rather run 4 lbs instead.
Racer
Joined: Dec 2005
Posts: 496
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From: edinburg VA.
I'm no supercharger expert, but I would think running that much compression would defeat the purpose of supercharging. Mine is 8.5:1. and was lowered for the s/c. I'm sure one of the pro's will let you know whats best or if its worth the expense without lowering the compression.
Drifting
Joined: Nov 2005
Posts: 1,406
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From: Dallas Tx
That compression sure is high for stock bottom end. What are the specs on those heads? At that compression level you're just wasting your money on a SC with stock internals. Get yoruself some 6.0 Truck heads to lower your compression down. Then it'll be more realistic to start talking forced induction.
Shane
Shane
Burning Brakes
Joined: Jun 2005
Posts: 1,171
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From: TN
Cruise-In VII Veteran
This C/R is not complimentary to forced induction. At advanced timing, you'll detonate the pistons. Pulling out timing to stop detonation will decrease horsepower levels. Making big horsepower is about the WHOLE combination of mods, not just adding power adders. 
Pro
Joined: Aug 2005
Posts: 655
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From: Seminole FL
St. Jude Donor '12
Originally Posted by 9secondflat
you must certantly will be pinging.... no one wants to add cam 2 in order to have fun on a true street machine..... and besides to much ping= whole in pistons
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From: Providing the most proven supercharger kits for your C5/6/7 609-752-0321
We have done it before but of course it's not optimal. ZO6's are not to far behind that and look how well they respond. I would suggest a max of 5-6 lbs of boost and alky injection. The car will make great power and stay together with proper tuning.
But which S/C kit to use.....
But which S/C kit to use.....
Thread Starter
Pro
Joined: May 2005
Posts: 710
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From: Northfield Center Ohio
Originally Posted by Shane_S
That compression sure is high for stock bottom end. What are the specs on those heads? At that compression level you're just wasting your money on a SC with stock internals. Get yoruself some 6.0 Truck heads to lower your compression down. Then it'll be more realistic to start talking forced induction.
Shane
Shane
On a Reciept is says "$531 Stage 2 Cam/$1261 ea. Heads Linenfelter Heads Cam Package" So I guess it was a $3000 Lingenfelter Heads Cam Package?
Last edited by SCannon; Feb 16, 2006 at 08:03 PM.
Melting Slicks
Joined: Dec 2005
Posts: 2,291
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From: sterling ct
you must certantly will be pinging.... no one wants to add cam 2 in order to have fun on a true street machine..... and besides to much ping= whole in pistons
let me clarify- to much compression and not enough octane results in knock or pinging, your car will compensate by pulling timing out of the system resulting in a loss in power. your knock sensor will not be able to compensate for a compression ratio that will exceed 13-15:1 under boost. the end result is a blown head gasket and or a hole in the piston.
by adding cam 2 110 mixed with 93 pump gas you will increase your octane to a level to handle the boost with no knock. my point is who wants to spend 7-9 bucks a gallon (ruin 02 sensors) in order to drive a car on the street. people that mix race/street gas always say my car is driven on the street/ sure until they run out of gas then they go home to their 50 gallon cam 2 drum and refil. what these people have is a slow track car not a fast street car.
the cc's of your chambere will determine the compression ratio/ plus if you have a dome piston/ dish or flat top.
hopefully this helps those who needed a better understanding
let me clarify- to much compression and not enough octane results in knock or pinging, your car will compensate by pulling timing out of the system resulting in a loss in power. your knock sensor will not be able to compensate for a compression ratio that will exceed 13-15:1 under boost. the end result is a blown head gasket and or a hole in the piston.
by adding cam 2 110 mixed with 93 pump gas you will increase your octane to a level to handle the boost with no knock. my point is who wants to spend 7-9 bucks a gallon (ruin 02 sensors) in order to drive a car on the street. people that mix race/street gas always say my car is driven on the street/ sure until they run out of gas then they go home to their 50 gallon cam 2 drum and refil. what these people have is a slow track car not a fast street car.
the cc's of your chambere will determine the compression ratio/ plus if you have a dome piston/ dish or flat top.
hopefully this helps those who needed a better understanding
Pro
Joined: Aug 2005
Posts: 655
Likes: 1
From: Seminole FL
St. Jude Donor '12
Originally Posted by 9secondflat
you must certantly will be pinging.... no one wants to add cam 2 in order to have fun on a true street machine..... and besides to much ping= whole in pistons
let me clarify- to much compression and not enough octane results in knock or pinging, your car will compensate by pulling timing out of the system resulting in a loss in power. your knock sensor will not be able to compensate for a compression ratio that will exceed 13-15:1 under boost. the end result is a blown head gasket and or a hole in the piston.
by adding cam 2 110 mixed with 93 pump gas you will increase your octane to a level to handle the boost with no knock. my point is who wants to spend 7-9 bucks a gallon (ruin 02 sensors) in order to drive a car on the street. people that mix race/street gas always say my car is driven on the street/ sure until they run out of gas then they go home to their 50 gallon cam 2 drum and refil. what these people have is a slow track car not a fast street car.
the cc's of your chambere will determine the compression ratio/ plus if you have a dome piston/ dish or flat top.
hopefully this helps those who needed a better understanding
let me clarify- to much compression and not enough octane results in knock or pinging, your car will compensate by pulling timing out of the system resulting in a loss in power. your knock sensor will not be able to compensate for a compression ratio that will exceed 13-15:1 under boost. the end result is a blown head gasket and or a hole in the piston.
by adding cam 2 110 mixed with 93 pump gas you will increase your octane to a level to handle the boost with no knock. my point is who wants to spend 7-9 bucks a gallon (ruin 02 sensors) in order to drive a car on the street. people that mix race/street gas always say my car is driven on the street/ sure until they run out of gas then they go home to their 50 gallon cam 2 drum and refil. what these people have is a slow track car not a fast street car.
the cc's of your chambere will determine the compression ratio/ plus if you have a dome piston/ dish or flat top.
hopefully this helps those who needed a better understanding
Furthermore, 6 psi is not going to be that big of a problem on 11:1 especially if a quality alky kit is installed.
