pulley size question. need your specs!
i am in the final stages of my build up on my 69Z. its been a long winter. converted from auto to 4sp and built a $$$ bullet proof shortblock. getting ready to put the blower on, but i am making a change since my initial investment last year. i decided to go with an intercooler now after a nice tax return. :-)
when i gave procharger my specs i told them 14-15psi. they sent the D1 with a 4.25" pulley. now i would like to make use of the full power available from the D1. 4.25" pulley at my shift point of 6800-7000 would spin it around 55k. i was debating on going to a 3.70" or maybe even a 3.40".
what size pulley are you running? what are some quick engine specs? how much boost do you see with your combo?
anyone "slightly" overspin the D1 past the 65k?
any help appreciated.
thanks,
mike