Re: Which Chevy 305 header in a 86 CJ7
I ran Hooker block hugger type headers in my CJ/350 to get my dual exhaust ran up inside the frame rails. You could get more torque out of longer chasis type headers, but getting them to fit inside the frame rails could be a challenge. I know Headman makes some chassis headers for this aplication, but, I am not sure where the collector exit is, or where the pipes will fit.
Thorley makes some nice looking Tri-Y headers in a typical block hugger configuration with a center exit facing straight down next to the motormounts, as well as some that are a little longer that make a 90 degree bend before exitting towards the rear of the block. I am considerring changing to these to gain a little torque. Kinda pricey though.
Best value for the money in my oppinion is the Hooker block hugger. Heavey gauge, nice thick flanges honest 1-5/8" tubes. And they are an easy fit. Closest thing to exauhst manifods.
Hope this helps.
'85 Scrambler under construction
5.7L Vortec, NV4500, and god knows what.