BBC - Which exhaust bolts are which? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

davepl · 08-01-2012, 05:09 PM

Finally found something I didn't take a good photo of - the layout of the passenger side exhaust manifold bolts.

I know probably two of them are double-ended bolts for retaining the AC bracket, but I only have one left at this point.

If someone has a 396/402 with air, I'd sure appreciate it if they could tell me the layout of the bolts (both sides, in case I've used one too many on the driver's side).

Thanks!
Dave

**burb71** · 08-01-2012, 05:36 PM

Just looked at my motor, the forward most bolt on both sides driver and pass side are double ended for brackets.

Pass side A/C bracket, drivers side power steering pump

davepl · 08-01-2012, 07:37 PM

Thanks! In the photo below I've highlighted a bar that goes from the back of the AC compressor down to what I assume are the manifold bolts.

Do the manifold bolts just go right through the bracket, as opposed to being double-ended with a nut?

That's sort of how it looks, but I didn't think the factory did stuff like that (added options that required disturbing the manifold bolts).

Thanks!
Dave

**burb71** · 08-01-2012, 08:16 PM

Remember its the very first bolt, its the one ahead of the one in your pic, at least on my truck.

08-01-2012, 05:09 PM	#1
davepl Registered User Join Date: Aug 2006 Location: Redmond, WA Posts: 6,332	BBC - Which exhaust bolts are which? Finally found something I didn't take a good photo of - the layout of the passenger side exhaust manifold bolts. I know probably two of them are double-ended bolts for retaining the AC bracket, but I only have one left at this point. If someone has a 396/402 with air, I'd sure appreciate it if they could tell me the layout of the bolts (both sides, in case I've used one too many on the driver's side). Thanks! Dave __________________ 1970 GMC Sierra Grande Custom Camper - Built, not Bought 1969 Pontiac 2+2 427/390 4-speed Coupe 1969 Pontiac 2+2 427/390 4-speed Convertible

08-01-2012, 05:36 PM	#2
burb71 Active Member Join Date: Oct 2002 Location: Ft. Myers, Fl Posts: 1,716	Re: BBC - Which exhaust bolts are which? Just looked at my motor, the forward most bolt on both sides driver and pass side are double ended for brackets. Pass side A/C bracket, drivers side power steering pump

08-01-2012, 07:37 PM	#3
davepl Registered User Join Date: Aug 2006 Location: Redmond, WA Posts: 6,332	Re: BBC - Which exhaust bolts are which? Thanks! In the photo below I've highlighted a bar that goes from the back of the AC compressor down to what I assume are the manifold bolts. Do the manifold bolts just go right through the bracket, as opposed to being double-ended with a nut? That's sort of how it looks, but I didn't think the factory did stuff like that (added options that required disturbing the manifold bolts). Thanks! Dave Attached Images __________________ 1970 GMC Sierra Grande Custom Camper - Built, not Bought 1969 Pontiac 2+2 427/390 4-speed Coupe 1969 Pontiac 2+2 427/390 4-speed Convertible

08-01-2012, 08:16 PM	#4
burb71 Active Member Join Date: Oct 2002 Location: Ft. Myers, Fl Posts: 1,716	Re: BBC - Which exhaust bolts are which? Remember its the very first bolt, its the one ahead of the one in your pic, at least on my truck.



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