Headers = exhaust restriction?
#2
I have a gauge for that
iTrader: (42)
I don't have a scientific answer, but if I ever get my 4.0 whipple project under way I am going to have some 2" or 2 1/8" primary headers with 3.5" collector headers custom made for mine. Should be 1100ish I think.
I don't think you can really go too big with a blower setup like yours. I have been bugging speed engineering to make some 2" headers and even sent Spike performance a message about it but neither seem interested.
I don't think you can really go too big with a blower setup like yours. I have been bugging speed engineering to make some 2" headers and even sent Spike performance a message about it but neither seem interested.
#4
Moderator
iTrader: (19)
I don't have a scientific answer, but if I ever get my 4.0 whipple project under way I am going to have some 2" or 2 1/8" primary headers with 3.5" collector headers custom made for mine. Should be 1100ish I think.
I don't think you can really go too big with a blower setup like yours. I have been bugging speed engineering to make some 2" headers and even sent Spike performance a message about it but neither seem interested.
I don't think you can really go too big with a blower setup like yours. I have been bugging speed engineering to make some 2" headers and even sent Spike performance a message about it but neither seem interested.
#6
11 sec. Truck Mod
iTrader: (12)
With my 1-3/4" obx headers , 2.5 " y pipe , into a full 3.5" out the tail pipe,
I just saw 10-20 psi back pressure at roughly 15psi .
Hell yes i need larger mid pipe first , and headers too .
What is the Rest of your exhaust consist of ?
I knew my headers / y pioe was restrictive , but not untill talking with 03sierraslt did i even think to test it .
I just saw 10-20 psi back pressure at roughly 15psi .
Hell yes i need larger mid pipe first , and headers too .
What is the Rest of your exhaust consist of ?
I knew my headers / y pioe was restrictive , but not untill talking with 03sierraslt did i even think to test it .
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#9
I just made up some 3" turn downs off the headers for the track. Removable midpipes with high flow cats for street cruising so that I am slightly closer to street legal. V-bands on the cats so that I can swap straight lengths when desired. Dual 3" through super 50s out the back.