Hi Guys...
so i had posted previous about my 440 challenger smoking hard from the breathers.....well i resealed the top end....new valley,valve covers ect, i replaced a slightly bent push rod on the number eight exhaust valve....well on start up the smoke is still heavy....without doing a leakdown i think it is heavy blowby (piston rings)is there any other thoughts???? i had a top end explosion resulting from fuel puddle and an intermitint spark, spark hit "boom" grenaded cast valve covers bubbled valley pan ect, is there any product(oil additive ect) that can help....short term just to limp by, move car around ect....any and all thoughts would be great!!!! thanks-christian

40/440
hughes 30/38 cam
performer RPM
aerohead's(replaced stage 5's after explosion)
4150 HP
protrans 727 cheeta(full manual)
2 1/2 3 chamber flows
3.55 "clutch"

If it's smoking only on startup you might consider R&R the valve stem seals. A person could do an over the fender overhaul with a rering/bearing it which is dependant on how much out of round/taper the bores have & the amt of wear on the crank & pistons or it might be time (& faster) to change the eng but 1st I think I would do a compression & especially leakdown tests & find out EXACTLY how the patient is doing but from your description of the symptoms it does not sound good.

hopefully you meant BREATHER- singular and have a PCV valve on the other valve cover.

If there were piston or ring damage, it would smoke continuously and not just on start up.

do you have a pcv hooked up?

restore additive might help some with worn cyl and rings,I have had good luck with some preety worn engines and that seemed to help a lot...didnt foul the plugs up with deposits like other oil honeys

I agree on checking the valve seals and a comp/leak test first thing

if it busted the valve cover it might have blown the old harden seals apart also

should be able to get a looky see at them with just a R&R of the valve cover

a good on the head spring tool from KD and a 2 1/2 foot rope should put some cheap stock seals on over the fender like said

I have done more seals than rerings on used engines myself

any of the snake oil be gone honeys will slow it down some by thickining the oil up

they are a patch but ya gotta do what ya gotta do till ya can do it

Thanks Robert....well it actually doese smoke during and after sooo......can somebody give me primer on a leakdown/comp check???? i have a commpressor what else.....again thanks...
-christian.

yes i do have a PCV valve.....smoke is constant....a real bummer!!!!i looked at seals they look O.K.....is there a chance that a 537 lift cam (30/38) with stamped rockers could leave the valves
open after lifter pump? i run the hughes cam/lifter/spring set....again this combo worked prior to the top end pop...i will do the recommended comp/leak test...it my be semi denial on my part but with low miles on the SB just a drag....on the up side i have a fresh although stock rebuilt 40/440/ShortBlock(flattops/stock rods/cast crank,ect,)....so i guess i should be gratefull....anyways thanks again...
-christian

Hey sratch....can you give me an overview of what exactly i should be looking for with the seals???
all and everything...i am going to ask basic questions, so i can troubleshoot/deny this all the way to the pan....
again thank you-christian.

It sounds like you had better have someone take a look at it in person. You could have multiple issues after the explosion.

Sorry ....sounds like yerrr motor is toast.