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Hello all. Stock 400 Block on a 78 Newport here, never been apart. We've been driving quite a bit this year and mostly in 60-80 mph range. Recently I noticed quite a bit of leaking around the oil filter/pump area. So I plan first try to tighten the bolts and if that does not help, to remove the...

Looking down into my 400 intake I see a (newish-looking) plug in one (upper) half and there is a round hole and some cavity in the lower section. What are these for, any ideas? Thanks!

Hello all, I suspect the drive shaft on my 78 C-Bod might be out of balance a bit, or (worst case) it is bent a bit - there's a driveline vibration at 105-110 km/h (65-70 mph). New engine/transmission mounts, new U-joints... I am playing with the clamps per the shop manual, but have not...

Will repost it here in case somebody may find it useful. It took me a while to do the install due to work and other factors. But finally it is all in and working. Started with: 1978 bone stock 400cid C-body with TQ but ELB-delete (poorly) performed eons ago. Canadian spec, so no emissions gear...