This is topic Supercharging and Compression ratio's???? in forum Tech Talk at Northern California Ford Owners  .


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Posted by beans (Member # 5711) on :
 
Ok well letm e begain by introducing myslef my name is Billy but all my frined call me Beans. I am Building another 65-66 ford mustang coup like i had in high school when I find one. I am curently Building a small block 302 that will be bored and stroked to 354 cubic inches. I was planing on supercharging the motor. OK first off I was wondering what what a good compresion ratio would be to run? I have buld motor before but only build them mild and I want to build somthing with alot of horsepower but not to wild to where I coldn't drive the car on the street. SO if you can please give me some tips and or pointers on what cranks and rods and pistons that would be could for a supercharged motor and what compression ratio I Would need to run. Thanks In advance Beans
 
Posted by 94gt (Member # 3060) on :
 
one of the mags ran a modular with stock and then raised compression on a dyno and then did the same with a s/c on it, the difference was insane! the higher compression certantly made a lot more power... Ill try and find what issue it was and post it up later today [patriot]
 
Posted by CDT (Member # 5004) on :
 
depends a lot on what supercharger you want to run.
 
Posted by 92stangLX (Member # 3252) on :
 
It depends on how much boost you want to run and what you are trying to do with your setup (ie maximize power or reliability).

I would say somewhere between 8:1 and 9:1 would give you good reliability.
 
Posted by Beans (Member # 5711) on :
 
OK yea I was thinking somewhere between 8:1 and 9:1 its will me a paxton novie 1200 probly pulling 10spi on a carberated motor. But yea if you can find that issue it will help me out alot I just need more info since I have never done a supercharged motor. Thanks in advance Beans.
 
Posted by CDT (Member # 5004) on :
 
I would say 9.1 with that blower
 
Posted by need-a-cage (Member # 5415) on :
 
The more compression the more power, but you have to run the right gas. If you want to run pump gas, don't go over 9:1. You will still have to retard the timing quite a bit.
 
Posted by Beans (Member # 5711) on :
 
Yea me and my dad talked about it and yea we won't go more than 9:1 for that reason that we want to run it on pump gas. Thanks for the help guys. I was also wondering where I coudl get a ford racing block cheap too. thanks again Beans.
 




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