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-   -   Exhaust order for 7/4 swap cam (https://www.racingjunk.com/forums/showthread.php?t=19346)

rundeep66 12-30-2007 11:58 AM

Exhaust order for 7/4 swap cam
 
I'm running a 7/4 swap cam does anyone know FOR SURE the order in which the exhaust pipes should be paired. I think it's 1 3 5 7 , 2 6 4 8. Please let me know if this is right or wrong. I already have my headers made from lemons but I will change them if I have too. Thanks for looking.

us7race 12-30-2007 02:45 PM

I guess I am not sure what you are asking...How are you going to pair exhaust pipe 2 and 6 (or 4 and 8) Do you mean at the collector? :?:

rundeep66 12-30-2007 04:10 PM

Yeap

jmarksdragster 12-30-2007 08:33 PM

I can't see any difference for the exhaust unless you were building 180 degree headers, not likely, or 4-2-1 headers. I run the same ones on my dragster, 4 to 1, with the 4/7 as I did with the standard cams.

hammertime 12-31-2007 02:41 AM

I agree shouldnt make no difference.

perfconn 12-31-2007 06:08 AM

Only makes a difference if using tri-y headers and then they are different for the 4-7 firing order swap

rundeep66 01-03-2008 06:59 PM

My header is a 4 to 2 to 1


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