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Re: 1969 250 i6 soft fuel line size
Quote:
Originally Posted by pjmoreland
I believe V8s with a two-barrel carb also had 5/16 line. That's how my '68 was.
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That's true. My 69 still has the OE 5/16" line that came with its 307. It was enough to support a 383 revving briefly to >5,500 RPM, and maintaining 2,300-2,500 RPM on freeways.
However, GM must have had a good reason to use 3/8" line on 4bbl engines, because they typically reduce costs wherever they can.
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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!
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