ElkySS

iTrader: (6)

i seafoamed the car yesterday. drove it around until the smoke stopped. ran just fine. it sat all night and when i drove off, it developed a pretty bad vibration at around 4k. doesnt matter if the clutch is pushed in or not, the shifter still vibrates. i dont really see how this could be related but just thought it ask. anyone head of this?

1ltcap

SOUnds like you've got a misfire. check your plugs. then injectors.

i've never liked seafoam. i've seen it create more problems than it solved.

96capricemgr

iTrader: (1)

You seafoamed the 396 LT4???

No way in hell would I seafoam a high compression motor.
I sincerely hope you find a simple fix like you left the vacuum line off.

I would start thinking about a plug change/compression check though, I would be worried about damaging something with appropriate built motor NA compression and introducing liquid to the chamber.

ElkySS

iTrader: (6)

it doesnt really feel like a miss. runs real smooth at idle even for a motor with as big of a cam as it has. ill check it out anyway. u might be right

ElkySS

iTrader: (6)

well when i had the heads off to be ported, the pistons had alot of build up on them. i was gonna clean them off but a buddy had me paranoid about carbon getting caught between a ring and the wall so i left it alone

ElkySS

iTrader: (6)

it was added slowly. barely brought the idle down at all since it was idling high from the massive vacuum leak

SS RRR

iTrader: (2)

There is no problem with cleaning pistons even with a wire brush. If you are afraid of debris then use a shop vac around the pistons once done.

ElkySS

iTrader: (6)

too late now but ill remember that for next time

ElkySS

iTrader: (6)

well, turns out the balancer and the hub are both junk. anyone have the part number for the steel ati i need?