yotaracer

I installed the hummer "muscle car" pan kit tonight on my 98 ls1 block and i noticed one bolt left over. its an m10 about 1" long. almost looks like a drain plug but not quite(it has one already). Is it an extra for the trans bolts? IDK what i could have missed. i got the pickup and tray all mounted fine. figured GM put it in kit for some reason.

yotaracer

Paul Bell

iTrader: (9)

Although nobody can explain it, some GM LS blocks are "missing" an oil pan bolt hole. There's a hole in the pan and gasket for it but no threaded hole in the block.

I suppose it's OK but in my build, it kept me up at night so I drilled and tapped the block-carefully. Other things keep me up at night tho....

LLLosingit

iTrader: (4)

Mine came with an extra bolt and my block had all the holes tapped already. Maybe they had people loosing one lol.

1970camaroRS

iTrader: (8)

That's for the dipstick.

Don't worry about the "missing" not-drilled pan bolt. It's missing on purpose.

Paul Bell

iTrader: (9)

If you are privy to why, could you share the info?

yotaracer

It is the dipstick bolt! Havnt installed dipstick yet so that makes perfect sense. I was exlcuding the missing pan bolt from the thread since I already Figure ls that out and they are m8 bolts . I also thought about drilling it but since I'm mating to a th400 I prob won't need the extra strength is could possibly provide. As long as it doesn't leak! Thanks everyone!