Re: [Chevelle-list] Exhaust System-Dyno Run

[Larry Shouse]

Title: Message

Clint,   Everything you said about my engine is correct except I did go with hydraulic roller lifters and roller rockers. My motor man told me to set redline at 6800rpm.   I had my dyno run today, and you are right. It did make peak power at 6000rpm.   442hp @ 6000rpm 467fp @ 4250rpm   Just a point of interest, airflow was 720.3 scfm @ 6250rpm, which is as high as they went. What does the "s" in front of the cfm stand for?   Videos -   www.fuglybrothers.com/videos/dyno-setup.wmv   www.fuglybrothers.com/videos/dyno-run.wmv   Larry     ----- Original Message ----- From: Clint Hooper To: The Chevelle Mailing List Sent: Tuesday, November 29, 2005 8:49 PM Subject: Re: [Chevelle-list] Exhaust System You guys have to remember that Larry's car isn't running a hyd lifter,oval port big block but a solid lifter,forged piston,four bolt main L78. Those things will easily rev to 7,000rpm and make their peak power well over 6,000rpm. It can handle a higher flow exhaust. I suggested 2.5" tailpipes because the exhaust velocity is reduced enough that the extra expense and more noise of 3" tailpipes isn't necessary on a BBC less than 427ci. The smaller tailpipes will help the low-end torque curve a noticeable amount and reduce the drone. Very few streetable 400ci small blocks will have cylinder heads that can flow like L78 BBC's. Clint Hooper H&H Custom,owner 1969 El Camino ProTourer 2001 H-D FLHR custom bagger http://dalesplace.com/misc/friends/clint/clint_hooper.htm