Walker crossover exhaust pipe for SBC? (Pictures Please)

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SMG

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Has anyone ever tried this Walker crossover pipe (PN# 40261)? It looks as if it would hug the left side frame rail better than the more popular Walker crossover pipe (PN# 42087).

Trying to figure out which one would work better on my SBC conversion.

Pictures of your crossover would be great!

PN# 40261
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Or, PN# 42087
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Thanks for your help!
 
Downey said:
Do those pre-made pipes require the use of a specific set of exhaust manifolds, and possibly a specific oil pan???
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These are some of the same questions I have. I am running the 2.5" center dump ram horns, so I'm not quite sure if these pipes would work, especially if the diameter is only 2".
 
I'm running Dorman 2" rams horns. I removed whatever flange/connector was on the tail end of the Walker pipe and installed a standard 3-bolt flange for mating to my exhaust. Nothing special about the oil pan.
 
I have 42087 - it's not installed yet as my engine is currently out of the truck. However, I've test-fit it and it should work nicely with my Dorman 2" center-dump Ram's Horns. It is 100% 2-inch pipe - it will not work with 2.5" ram's horns. I believe this is a reproduction pipe for an early Corvette. One thing to add is that you will likely need the heat-riser (or a heat-riser spacer) to clear the oil pan properly. This is about a 2" piece that mounts between the Ram's horn and the exhaust on side side of the engine. I picked my spacer up from Corvette Central (P/N: 322110). That said, beyond the spacer, you don't need any special oil pan, etc. for proper clearance.

I think I read somewhere that if you use two passenger-side Ram's Horns, you can get it to squeak by the oil pan without the spacer, but since I have an old 283 with no accessory holes in the head, I need the alternator-mount on the driver's side Ram's horn - so I'm going with a spacer.
 
RWBeringer4x4 said:
I have 42087 - it's not installed yet as my engine is currently out of the truck. However, I've test-fit it and it should work nicely with my Dorman 2" center-dump Ram's Horns. It is 100% 2-inch pipe - it will not work with 2.5" ram's horns. I believe this is a reproduction pipe for an early Corvette. One thing to add is that you will likely need the heat-riser (or a heat-riser spacer) to clear the oil pan properly. This is about a 2" piece that mounts between the Ram's horn and the exhaust on side side of the engine. I picked my spacer up from Corvette Central (P/N: 322110). That said, beyond the spacer, you don't need any special oil pan, etc. for proper clearance.

I think I read somewhere that if you use two passenger-side Ram's Horns, you can get it to squeak by the oil pan without the spacer, but since I have an old 283 with no accessory holes in the head, I need the alternator-mount on the driver's side Ram's horn - so I'm going with a spacer.
Click to expand...

Cool! Thanks for the info!
 
So, after debating on what I should do about a SBC crossover pipe, I decided to make my own.

My ram horns are 2.5" with 2.25" header buddies. The header buddies are really nice because you can rotate 360 degrees any direction and you can tweak the angle a bit.

From the header buddies I ran three 90 degree and two 45 degree elbows. With these pieces I was able to fabricate my own 2 into 1 collector.

The passenger side runs to the forward edge of the shallow end of the oil pan.
Currently I have about 3/4" gap between the pan and the pipe.

I do pan on wrapping all of the pipe with heat wrap.
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spotcruiser said:
I'm running Dorman 2" rams horns. I removed whatever flange/connector was on the tail end of the Walker pipe and installed a standard 3-bolt flange for mating to my exhaust. Nothing special about the oil pan.
Click to expand...

Do you remember which Dorman part number you used? The number 674-501 seems to be the common ear-less one, and the numbers 500 thru 504 are driver and passenger side bracket variations. There are some Dorman ram's horns that have an angled outlet too.
 
Yep, I believe they were both 674-501. Straight, center dump, rams horns without any superfluous brackets to cut off.

Strait Cruisin said:
Do you remember which Dorman part number you used? The number 674-501 seems to be the common ear-less one, and the numbers 500 thru 504 are driver and passenger side bracket variations. There are some Dorman ram's horns that have an angled outlet too.
Click to expand...
 
Strait Cruisin said:
Do you remember which Dorman part number you used? The number 674-501 seems to be the common ear-less one, and the numbers 500 thru 504 are driver and passenger side bracket variations. There are some Dorman ram's horns that have an angled outlet too.
Click to expand...

Sorry I don't. I believe these ram horns came off an old Corvette due to the fact they 2.5" outlets.
 
I found that I needed to add a flexible section of exhaust pipe outboard of my transmission. I was breaking hangers when wheeling prior to the addition of the flexible section.
 
I made a rigid hanger that bolts to a couple of bell housing bolts, similar to the original 2F headpipe hanger, and use a standard exhaust clamp to hold the exhaust pipe to that hanger. The flexible section is a foot or two behind the rigid hanger and then there is a flexible hanger under the rear bed before the exhaust aims down and outboard behind the left rear tire.

You can see the rigid mount and flex section in this photo. There are any number of ways to go about it. As I mentioned, before I added the flexible section I broke the rear mount several times while wheeling. The flexible section solved that issue. If you don't go wheeling and flex the truck a lot, you may not need to bother.

Exhaust1 (2).webp
 
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