Here we go, I don't have 1 7/8" mufflers inlets and outlets in my street car, and at the time was not running 498 motor without any specs givin. This is about a twist of truth. Yes if you go from 1 7/8" to 3" mufflers there is going to be a HELL of a differents. Maybe a small block cobra runs this size pipe, not a BB. To bad we don't do a real test with a street ERA, FFR, and SPF BB side pipes and then see what the change is.
Jerry C.feel free to jump in here, you been racing for how many years,20+. This is the same story as a motor on a dyno testing against real street numbers at the rear wheels. In the dyno room, different size pipes from 1 3/4" primarys up to 3". adjustable collectors with 5-20" of adjustment. Carbs that product better numbers in a dyno than on the street. Mufflers can be from no chamber to 4. Magic Fuel, I will stop with this. This is the same story about air filters getting 20-30 HP at 7,000 rpms, Yes, who's motor runs at this rpm all the time. Real test shows any where from lossing 4-5 HP to ending up with 6-10hp at 6,000 rpm. There are questions with this, First what material is the inlet made from going to the throttle body, Metal( Aluminum or Plastic) Aluminum holds heat better than plastic, higher air temp less power. Location, Location, Location of the air filter and ability to get clean, fresh, outside cooler air. Speed of the air being sucked into the motor.
A test was done back in the 80's with Ford Power Parts in Cali. Alot of guys here had problems with FPP, I didn't but they did a buildup of a 427SO for 600HP. They found about the same thing with side pipes and a 15-40 hp loss of power in the 5,500 rpm and up.
Mdman352 what is the matter with a test outside of this companies control to find the truth??? We should all have 900 hp motors if you add on all the special parts sold out there, intake manifolds, lighter rocker arms, heads that flow 450cfm on intake and 370 cfm on exhaust. And doing this on a 4.400" center bore motor with 2.25" intake valves and 1.75" exhaust. No body is being a DICK. Just looking for the STRAIGHT TRUTH. This is the problem with this coun try and partialy why we are in BIG TROUBLE, NOTHING but lies and half truths. I hope your kids are smart, strong and bright. They are going to need this after we are gone. And yes I have a small penis,
but the old lady doesn't mind.
It gets the job done after 24 years still without drugs.
Rick " small dick" L. Ps Quicktime bell housing just went through this and testing over the last 2 years. We now have a choice of SFI bells or not but we now get the right honest info.