a big hammer and a bigger hammer. hold the bigger one behind the rivet and hit the other side with the big one. it'll help if the rivets have loosened but not so much if the holes are worn oversize (wallered out, lol).
neil.
looking good :thumbsup:
without looking back has the motor been broken in? if not i'd do that before getting the headers coated in case the process damages the coating.
neil.
at the very least the single section should be a bigger bore than the dual section or it 'could' be a restriction. all down to the power of the motor i guess.
neil.
i have those kb399 domed pistons for my own 318 build too, mainly as i'm using 2.02 'j' heads which wouldn't help the already low compression with stock pistons.
neil.
not sure if it's been mentioned yet but gm ls engines often have smaller bores and 2.00 to 2.08 valves stock. people don't shout about bore shrouding all the time with them do they? it just seems with mopar folk most just dismiss the 318 as never being able to make hp so say anything they can to...
surely no, because unlike (for example) a small block ford the valves aren't in/ex/in/ex/in/ex/in/ex so only 2 cylinders would see any benefit. the other 2 would be worse.
neil.
i had a 'glass lift off hood on the 66 big block fairlane i had a while back. it ran hotter than i liked until i adjusted the rear hood pins up giving about an inch and a half gap across the cowl. it was a double edged sword of plus'.... it ran cooler and on cold mornings the heat demisted the...