4.3 5 Speed Vortec From A 2001 Blazer Xtreme
 

What Do You Guys Think I Can Run In A 1/4 Mile With A 4.3 Chevy Vortec With A 5 Speed On A First Gen Rx7 And A Gsl-se Rear End. I Have The Engine Already And About 3 Blown 12a Engines. Hmmmmmm

first off why just a 4.3 in there? You can get a carbed sbc 350 for probably the same price and it would have more power. Second a 5 speed would make you slower then a auto also. As for the actual 1/4 mile time to give you an idea a STOCK ls1 with a 6 spd runs 12 seconds. So you would be slower