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Post by 94m6hardtopz on Oct 28, 2005 16:44:57 GMT -5
i ordered a dynomax race magnum to replace my flowmaster 30 series. a while back we were dynoing a ls1 with a cam, lid, longtubes, o/r y pipe, and an 80 series flowmaster catback. it made 352rwhp. we opened the cutout and it made 370rwhp. i was like 'd@mn'. so even tho the 30 series isnt as bad as the crossflow, it cant be good. so out with the flowmaster, in with the muffler i could drop a tennis ball though.
then im gonna upgrade to longtubes. i only expect 10-15rwhp from that. then comes the heads/cam. ;D
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Post by DocSpeed on Oct 28, 2005 17:58:56 GMT -5
Cool man. I just sold a set of Dynomax race mufflers...I guess I should have kept them for myself.
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Post by AAron on Oct 28, 2005 18:10:14 GMT -5
straight pipes ;D, screw the muffler
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Post by turtle on Oct 28, 2005 18:21:24 GMT -5
I heard LT1's perform better with a little back pressure. Did I hear wrong  |
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Post by DocSpeed on Oct 28, 2005 19:45:08 GMT -5
I think all engine perform better on the low end with a little back pressure, I may be wrong though.
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Post by 94m6hardtopz on Oct 28, 2005 21:22:12 GMT -5
straight pipes ;D, screw the muffler im a redneck, but not that big a red neck. |
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Post by 94m6hardtopz on Oct 28, 2005 21:23:14 GMT -5
I heard LT1's perform better with a little back pressure. Did I hear wrong i think Judson Massingill summed it up best "there is no such thing as too much muffler flow, but there sure is a problem with too little." |
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Post by turtle on Oct 28, 2005 21:53:13 GMT -5
I heard LT1's perform better with a little back pressure. Did I hear wrong i think Judson Massingill summed it up best "there is no such thing as too much muffler flow, but there sure is a problem with too little." I ment nothing by it man. That was just what I'd heard, sorry  |
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Post by AAron on Oct 29, 2005 10:41:24 GMT -5
straight pipes ;D, screw the muffler im a redneck, but not that big a red neck. go big or go home  |
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Post by 94m6hardtopz on Oct 29, 2005 17:03:18 GMT -5
i think Judson Massingill summed it up best "there is no such thing as too much muffler flow, but there sure is a problem with too little." I ment nothing by it man. That was just what I'd heard, sorry its no problem man. actually, as far as muffler flow goes that saying isnt true. but as far as headers go Judson has said 'too small is better then too big any day.' so its not a completely untrue statement. |
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nhraman
Junior Dragster
LSX LOVER
Posts: 8
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Post by nhraman on Nov 13, 2005 19:51:18 GMT -5
18hp.....thats alot--i have the 80 series,but also an elec.cutout...still...18hp loss in normal driving.[cutout closed].Do you know if any of that loss was at low RPM's? ? |
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Post by 94m6hardtopz on Nov 16, 2005 12:04:23 GMT -5
that was at peak at 6000rpm. it wasnt that much at normal cruising rpm. it just starts to be restriction above about 3500 if i remember right. next time i go to the shop ill pull the graph off the computer.
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