340 with 302 cast head for pickup

The piston are TRW factory style cast 40 over pistons they are true flat tops not sure about valve reliefs. They stick .010 out of the hole. The intake will change as well to his port matched edlebrock torquer single plane. I mentioned the X heads that have been milled like 90 thou.

We had this same set up running in our 68 dart with same trans (built 904 with 3200 stall converter) 8 3/4 rear end with 3.91 gear and posi super stock springs car was fast but never took it to the track to see how fast.
My dad figured in the 450 to 500 hp range it would twist to 6500 and still be pulling. I will post a video of it running when I get home.

The truck is 89 two wheel drive no posi so one wheel peal but one project at time.

Thanks for all the feed back guys I try and keep you updated on any changes that might come into his mind.