I am glad you diecided to go with the six. I seriously question the eightis cheaper theory but hey what do i know. My budget for my rail is $2500 including the motor and I am about two weeks away from being done and still in budget.
A hot 250
6 307 pistons $90 Rings Overhaul kit under $200 on ebay last time i looked. Cam and Lifters about $230 . Z 28 valve springs $40. Machine work 300 to 500 and 200 for stuff we forgot. Power will be way abouve the normal Chev v8 and mileage will also be great.
I wish you all the best. BTW a reworked 292 truck carb showned no restiction on my flowbench at just over 500 intake lift on a stock manifold and a modified head. That engine won Second overall one year in Midstate Vintage Stock Car championship just in case anyone thought I was talking about a slug
D
