Originally Posted by
ekim628
The FDR that i use for 17.5 non-timing in carpet is usually 3.6-4.0 and for 21.5 i heard the Viper team using the same FDR numbers. Motor timing on the end bell is max. Remember to always check the temperature after 3 minutes to make sure its safe. If the temps are low then you can gear one tooth until it reaches optimal levels (150-175*)
Hope this helps
Thanks Eric, this was the info I was looking for.
When you say Max timing on the end bell you mean 45* correct? I was looking at another guys setup on the weekend and he had the end bell timing cranked to 60*(?) his car was very fast and temped at 155* with a fan.