TDoc
Full Access Member
- Joined
- Jun 8, 2021
- Posts
- 114
- Reaction score
- 175
- Location
- Flagstaff, Arizona
- First Name
- Terrell
- Truck Year
- 1979, 1986
- Truck Model
- K10, K5
- Engine Size
- 400, 305
I ordered the Dynomax squarebody universal 2.25” header back kit 89004 due to price. I was able to get summit to price match the shipped price from advance auto $144. I added (2) stainless AP Exhaust XS1255 (magnaflow generics) $44ea. I’m only into the dual exhaust conversion ~$250 (so far lol.) I’m going to attempt to connect this to my manifolds as I have some extra pipe laying around. You can either bolt this kit together with clamps or welded. According to the reviews, the u clamps that are included are terrible, either buy 2.25” narrow
Band or wide butt clamps. Better yet, weld it together if you have the skills.
I will post updates to the thread below once I get it installed.
www.gmsquarebody.com
Band or wide butt clamps. Better yet, weld it together if you have the skills.
I will post updates to the thread below once I get it installed.
dual exhaust kit
was curious if anyone out there has installed a Dynomax Header-Back Dual Exhaust Kits 89005 on a k5 blazer, if so id love to see some pics of how the final product looks

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