Exhaust: over under sideways down
Posted: Sun Aug 30, 2026 2:29 am
The 1275 in my pickup was still breathing thru the 948 HS2 and 1-1/8 exhaust pipe. I bought a damaged Spridget exhaust manifold on eBay and cut off the flange. Also from eBay a box of thirty 1-5/8” assorted pipe bend rejects from a header builder.
The challenge is the manifold exits close to the engine bay floor and is angled forward. To clear the floor and stay clear of the brake pipes I directed the flow forward and used the U bend to spiral back and up passing thru the “window” with plenty of room. A two foot length of flex pipe connects to the muffler mounted just behind the rear torsion bar anchor. Ad libbed on the fly without a design or measurements using five of the thirty pieces that looked like they could fit. Tacked together with a flux wire welder which is very messy. I will complete with TIG or oxy gas.
Intake will be thru an old HS6 connected to a “minispares” manifold. I will need to fabricate some kind of bracketry for the throttle and enrichment cables.
Also this carb has no tap for the vacuum advance. I will have to figure that out too.
Looks a little like a sixties formula one pipe. Maybe I’ll gain hundreds of horsepower .
Wish me luck, hope it works.
The challenge is the manifold exits close to the engine bay floor and is angled forward. To clear the floor and stay clear of the brake pipes I directed the flow forward and used the U bend to spiral back and up passing thru the “window” with plenty of room. A two foot length of flex pipe connects to the muffler mounted just behind the rear torsion bar anchor. Ad libbed on the fly without a design or measurements using five of the thirty pieces that looked like they could fit. Tacked together with a flux wire welder which is very messy. I will complete with TIG or oxy gas.
Intake will be thru an old HS6 connected to a “minispares” manifold. I will need to fabricate some kind of bracketry for the throttle and enrichment cables.
Also this carb has no tap for the vacuum advance. I will have to figure that out too.
Looks a little like a sixties formula one pipe. Maybe I’ll gain hundreds of horsepower .
Wish me luck, hope it works.