both questions relate to the ac bracket that is formed around the passenger side valve cover.

its looks like im missing a bolt that goes through the ac bracket and screws into the top of intake manifold. does anyone know the correct size?

Im also missing what looks to be a nut on the bottom of the ac bracket that fits over a threaded bolt that is mounted in the side of the block. does anyone know what size that nut is?

does anybody sell a bolt kit for this? I see alot of ac brackets but no bolts or bolt kits.

engine 400 big block

thanks

 

FYI, there are early (1965-1967) 400 engines and late (1968-1969) 400 engines. That aside, the engine matters less than the brackets that are being used. So what year vehicle is this and are the brackets the ones that came with the engine, or the ones that came with the vehicle (if the two are different years).

 

got it.
its a 66-67 400 E block in a 72 cutlass. Thought the chassis assembly manual i have showed a bolt going into intake manifold.
the brackets are from the 350 that used to be in the car.
i have photos. couldnt find them when i posted.
dad would say belt would jump off but it doesnt bother me cause the ac is farrr from working anyway. he says i need the right brackets but everything i find has same casting number. wish i can just take compressor off for now so that bracket isnt over valve cover.
the water pump is the one for ac models. ac compressor is off the 72 350 small block

I thought maybe the fact the bolt is missing and the bottom of the bracket is not locked in with a nut could be why belt is jumping off. i didnt think cars with 4.11s had ac either.