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Re: A header question with a twist
Some more observations here after I crawled under the truck:
Take a look at the photos. Not only does the collector point right at the trans cross member, it's also inboard way too much, about 1" from the TH350. It needs to be around 1" lower and 2-3/4" to 3" outboard to take advantage of the pipe clearance GM engineered into the cross member (as shown above the old exhaust pipe).
Yes, I could use a tight S-bend, but that would affect flow, and it would hang down too low. Also, the collector would still be so close to the trans that I'd have to move it out of the way (sacrificing gaskets) to drop the trans, or even the converter cover.
As a buddy of mine said, "Huge fail." These are going back to Summit! Next up will be the Hedman 62010 stainless headers made in the USA. With them, I should be able to have a shop bend some down pipes to my spec.
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Mike
1969 C10 LWB -- owned for 34 years. 350/TH350, 3.08 posi, 1st Gen Vintage Air, AAW wiring harness, 5-lug conversion, 1985 spindles and brakes.
1982 C10 SWB -- sold
1981 C10 Silverado LWB -- sold, but wish I still had it!
1969 C10 (not the current one) that I bought in the early 1980s. Paid $1200; sold for $1500 a few years later. Just a hint at the appreciation that was coming.
Retired as a factory automation products salesman.
Worked part-time over the years for an engine builder and a classic car repair shop.
Member here for 23 years! This is the very first car/truck Internet forum I joined. I still used a dial-up modem back then!
Last edited by MikeB; 09-27-2022 at 03:06 PM.
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