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Old 07-28-2020, 09:08 AM
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Lloyd-TX Lloyd-TX is offline
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Join Date: Jul 2000
Location: Bellaire (HO-uston), Texas
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Quote:
Originally Posted by SD455DJ View Post
Lloyd, The only 'real world' comparison I have is with my RAIV Judge. It had an old Maramount (sp?) system (kink-bent 2 1/4" with 20" case 'turbo' style mufflers) and with the original motor ran 13.70's at 103 mph average. I swapped in a Torq-Tech 2 1/2" mandrel bent system with 18" long DynoMax UltraFlo mufflers and the performance improved to 13.50's at 106 mph. I'm sure there is more potential gains and it has run 12.80's at 110 mph with the replacement RAIV engine (borrowed from another RAIV GTO) with the same exhaust system.

I believe there is at least a 10-15 RWHP reduction going from DynoMax UltraFlo's to the SuperTurbo's, and another 10-15 hp reduction going to the factory (Waldron/Gardner) mufflers.

It would be an interesting test.

Dennis
Thanks for the information, Dennis. Take care.

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"455HO" Lloyd


2008 GMC Sierra Denali 2WD Crew, L92 6L80E, Silver w/ Ebony guts, 14.26 @ 98