Quote:
Originally Posted by Alan Roehrich
Glad to hear it Danny. It may be telling you that the engine can use more camshaft. Did you try raising the shift points slightly? Now that you've effectively increased the lift and possibly the duration of your camshaft (you'll have to plot it to see what you actually did) you may find you have raised the RPM where peak HP and torque occur, and may find you've also extended your useable RPM range as well.
You may also find you need to make minor tuning changes to compliment what you've found. When you make a discovery like you have, you often need to check your tune up to see if you need to make changes.
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I usually shift at 6500 and now i shift at 6900 and still pulled good . Before it would slow at 7000 shift..
We have spring pressure low because engine was new and it ran so consistant we never raised the spring pressure to were we had originally checked at...Next i am going to to shim springs 30 and try that . I know this will help the flatness i have over 7200 .We already checked it for coil bind before when we had engine on stand. If this helps on the higher rpm ,we will then take the 538 gear out and go lower on it. I can only get a 28" tire under the rear(i guess because it is a 4-door and is very tight in the rear tire compartment. I run a 26" tire for the 1/8 and a 28" for the 1/4...I don't know if i want to try a 557 or a 586. I still need to make through the 1/4 mile.....Thank all of you for your help and suggestions as it has been a help to me.....I am thinking now in good weather it will run mid 7.50's in the 1/8 with the push rod change alone....