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Re: Exhaust System Cost
Quote:
Originally Posted by Ziegelsteinfaust
Engine Masters did a exhaust comparo. At roughly the 500hp level crushed pipe did not make a difference.
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What diameter pipes were they using? If 3" or more, it could be that they still had plenty of capacity to handle the engine's exhaust flow, even after being crush-bent.
Found this on a LS tech-geek site:
Mandrel 2.5" duals have a combined area of 8.819 sq. in.
Crush bent 2.5" x 2" oval tubing duals have a combined area of 6.958 sq. in.
That's a 21% restriction. 
But you don't need math to simply look at both type bends to see which one will flow the best.
__________________
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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