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Deleted member 6382
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Don’t know who the manufacturer is sorry. I’ll have a closer look to see if I can find any clues. I can measure them tomorrow Too, but I believe they are 1 3/4 into 3”. I’ll double check.
Not sure if I know what you mean bolt pattern spread? but they were on W-2 econo’s in a 71 cuda
Not sure if I know what you mean bolt pattern spread? but they were on W-2 econo’s in a 71 cuda
Rob C
Well-Known Member
The attaching bolts can have two patterns.
https://www.ttiexhaust.com/MoparClassics-Headers/340W2/Dual-Bolt-Pattern-Head.jpg
https://www.ttiexhaust.com/MoparClassics-Headers/340W2/Dual-Bolt-Pattern-Head.jpg
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Deleted member 6382
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1 3/4“,
3”,
4 3/4”
Looks like to me that a guy could drill out the other pattern if you want to. Why do you ask what pattern it is anyway? I’m not familiar with w2’s don’t they all have dual pattern on the head?
Are you interested?
Rob C
Well-Known Member
One probably could drill out the different bolt spread. Only because it is narrower. Had it been the narrower version, going wider doesn’t look like it could be done. And that’s why I asked just to be sure. Also to check if it fits my heads.
Not all W2’s are dual pattern. So that’s 3 versions right there. And the list of versions goes long! Add in the Econo versions, the 59* versions and then the 48* versions. Now we’re are at 9 versions. Then add in the various chamber sizes offered throughout the years. Upgraded heads in various forms. Chamber, intake and exhaust port, stiffening ribs. They were also offered as loaded units as well. It makes me dizzy. I’m Glad it was on paper! (Catalog)
Yes, I’m interested.
Ok, so what we have here is a 1-3/4 primary tube header.
The collector is 3 inch.
The attaching bolt hole spread is 4-3/4.
Check your private messages (Conversations) you’ll have one from me there.
Not all W2’s are dual pattern. So that’s 3 versions right there. And the list of versions goes long! Add in the Econo versions, the 59* versions and then the 48* versions. Now we’re are at 9 versions. Then add in the various chamber sizes offered throughout the years. Upgraded heads in various forms. Chamber, intake and exhaust port, stiffening ribs. They were also offered as loaded units as well. It makes me dizzy. I’m Glad it was on paper! (Catalog)
Yes, I’m interested.
Ok, so what we have here is a 1-3/4 primary tube header.
The collector is 3 inch.
The attaching bolt hole spread is 4-3/4.
Check your private messages (Conversations) you’ll have one from me there.
D
Deleted member 6382
Guest
Sounds good, and you have a reply. Thanks for the education!
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