conversion chart
- Thread starter mark22
- Start date
mach1 mark
Well-known member
take the car to the dyno, then change cam, return to dyno. Take first figure and subtract second figure: then you know.
I didn't know you could convert cam ratios to figure increase power. I hope someone responds, that would be interesting to know.
Love the beating horse.
I didn't know you could convert cam ratios to figure increase power. I hope someone responds, that would be interesting to know.
Love the beating horse.
Howdy Mark,
We need more info... read the last suggestion...
Any engine is just a big air pump. The trick is to get more air in, light it, and then get it out.
A cam will give you more power with no other changes, BUT (don't you just hate big BUTS) it will give you MORE power if you have a bigger carb and headers and DuraSpark II to go along with the cam;s increased power..
First, I'd start by improving the ignition to an electronic DuraSpark II (DSII) distributor. (Read the Sticky on doing that)
Next, I'd then I'd add a bigger carb.
Then I'd improve the exhaust. (large single exhaust - with or without headers)
Now I'd change the cam. BUT, only if the rings and bearings are good.
We need to do one more thing with the air passing through the engine - compress it. You'll have to remove the head to change cams, so plan for some head work while it is off. If you have a 70's head, you can keep it, otherwise consider changing it to a 70's head. To get more compression, the easiest thing to do is to mill it .060" or .070". If you do a complete rebild, consider "flat-top" pistons.
Read ALL of the "Sticky" messages in this and the High Tech forum. Especially the head swap article.
Finally, go to your profile and make some changes. Tell us where you live - you might have someone else close by. Do a signature that tells us about your car. It is important to know what you havein order to give you advice about how to add power.
Go to the web site in my signature and play with the compression calculator. You'll be able to see how the compression changes the power output.
Welcome to the forum - we'll try to help
We need more info... read the last suggestion...
Any engine is just a big air pump. The trick is to get more air in, light it, and then get it out.
A cam will give you more power with no other changes, BUT (don't you just hate big BUTS) it will give you MORE power if you have a bigger carb and headers and DuraSpark II to go along with the cam;s increased power..
First, I'd start by improving the ignition to an electronic DuraSpark II (DSII) distributor. (Read the Sticky on doing that)
Next, I'd then I'd add a bigger carb.
Then I'd improve the exhaust. (large single exhaust - with or without headers)
Now I'd change the cam. BUT, only if the rings and bearings are good.
We need to do one more thing with the air passing through the engine - compress it. You'll have to remove the head to change cams, so plan for some head work while it is off. If you have a 70's head, you can keep it, otherwise consider changing it to a 70's head. To get more compression, the easiest thing to do is to mill it .060" or .070". If you do a complete rebild, consider "flat-top" pistons.
Read ALL of the "Sticky" messages in this and the High Tech forum. Especially the head swap article.
Finally, go to your profile and make some changes. Tell us where you live - you might have someone else close by. Do a signature that tells us about your car. It is important to know what you havein order to give you advice about how to add power.
Go to the web site in my signature and play with the compression calculator. You'll be able to see how the compression changes the power output.
Welcome to the forum - we'll try to help
Generally, the bigger the claims, smaller the return - or more costly the product!
As Dennis said, a little more info will help. You're not going to get spammed or harrassed. But it could turn out that you live five miles from an expert, and don't know it yet.
http://fordsix.com/forum/profile.php?mode=editprofile
Don't forget to click the Submit button right at the bottom, when you're done.
For cams, the hotter the cam, the more "static compression" you will need. Some cams may have the same measurements, but give different results - a more aggressive cam grind will lift the valves higher and sooner yet have the same advertised duration as a milder one.
Do you have any mechanical background, maybe done your own basic servicing?
Regards, Adam.
As Dennis said, a little more info will help. You're not going to get spammed or harrassed. But it could turn out that you live five miles from an expert, and don't know it yet.
http://fordsix.com/forum/profile.php?mode=editprofile
Don't forget to click the Submit button right at the bottom, when you're done.
For cams, the hotter the cam, the more "static compression" you will need. Some cams may have the same measurements, but give different results - a more aggressive cam grind will lift the valves higher and sooner yet have the same advertised duration as a milder one.
Do you have any mechanical background, maybe done your own basic servicing?
Regards, Adam.
Generally that's something where people use a program like "Desktop Dyno" or one of the free imitations. You have to plug in as much data as you can muster on a particular setup, and even then it needs correlating with a known baseline found on a dyno.
A cynic's rough approach is to divide any claims by three. If something says "Gain up to 25 horsepower" - you might get eight more. :roll: If you can't figure out how the product will give you any gain, it probably doesn't.
A cynic's rough approach is to divide any claims by three. If something says "Gain up to 25 horsepower" - you might get eight more. :roll: If you can't figure out how the product will give you any gain, it probably doesn't.
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