Its not as black and white as low end or top end. high or low rpm cause really you need the power across the board and in the range your gear'ed for and trap speed you cross at.
With my old combo.. I launched at 2600 rpm on foot brake, engine made peak HP at 6200 rpm, I shifted at 6400 rpm and I crossed the 1/4 mile traps at 118 mph which was 6,000 rpm
My idea of low end is torque from idle speed up to about 3,000 rpm, then mid range is 3,000 to 5,000 rpm and top end is 5,000 and up
The idea setup is you shift right above engines peak HP, the shift drop in rpm outs you in fat part of torque curve, and then you cross the traps at engine's peak HP RPMIs high or low rpm for racing in quarter mile?
The best thing for you would be to buy a better torque converter for your transmission this will get you out of the gates at a higher RPM.
Also, you need to be using the rpms in between where your peak torque and peak HP are. That should be your optimal rev range.
And for pete's sake, go onto a forum or read a book or magazine and get some knowledge into you. You are gonna need alot of knowledge to make a heavy truck go fast when that 5.3 doesnt really make a lot of HP at the wheels. The truck certainly wasnt designed for drag racing. You would be lucky to be faster then most crappy civics with just those parts installed. You are gonna want to do some major engine work or nitrous injection or something to get that heavy beast moving.
www.ls1tech.com %26lt;--------get on there and start reading.Is high or low rpm for racing in quarter mile?
low RPM, you want to be able to get to peak power and quickly as possible. as a general 'rule of thumb' the person ahead at the 60 foot mark is the one that will win
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