What do you think about AS&M headers
What do you think about AS&M headers
I want to put a pair of AS&m headers on my 96 SS with the dual cat y pipe.
What do you thinkof these headers?
Has anybody encountered any problems with these headers?
How's ground clearance with the dual cats??
Pic's would be nice
Thanks,
Greg
What do you thinkof these headers?
Has anybody encountered any problems with these headers?
How's ground clearance with the dual cats??
Pic's would be nice
Thanks,
Greg
He hit the nail on the head. Price is the only setback. My install was pretty straight foward (granted it took about 30 hours total!) They are still emission legal....I don't know if that's a problem for you. The biggest pain was the driver side because the headers are in two pieces and you have to slip them in together, but it wasn't all that bad.
Clarify your intent.... are you planning to install "dual cat" (96/97) AS&M headers? Not clear from the way you stated the question. As far as I know, the AS&M dual cat headers are no longer made, only the single cat (93-95) are still available.
As far as the 96/97 dual cat AS&M's do NOT touch them. A buddy of mine put them on his 97 Z28, and even with covering virtually everything under the hood with heat shield, they melted everything... the heater box, even the top of the oil dipstick - a real disaster. He took them off and threw them away.
For the single cat models.... definitely among the best non-LT headers out there. I push almost 800HP through them. I bought them used from a buddy who was putting over 850HP through them. He dyno'd them at that level, then installed Hooker LT's, and lost HP. Only when he changed the cam and pushed the engine over 925HP did the LT's make more power.
The advantage of the LT's appears to be a very broad torque curve.... and that is the theoretical advantage of a "long tube"... more torque down low due to "tuning" the scavenging in the runners to lower rpm. A shorter tube moves the torque curve up, and that's why on a very high HP engine, that is only operated at 5K rpm and up, for example, mid- or short-tube headers may show an advantage under some condition. But the LT's seem to be killer for the street.
As far as the 96/97 dual cat AS&M's do NOT touch them. A buddy of mine put them on his 97 Z28, and even with covering virtually everything under the hood with heat shield, they melted everything... the heater box, even the top of the oil dipstick - a real disaster. He took them off and threw them away.
For the single cat models.... definitely among the best non-LT headers out there. I push almost 800HP through them. I bought them used from a buddy who was putting over 850HP through them. He dyno'd them at that level, then installed Hooker LT's, and lost HP. Only when he changed the cam and pushed the engine over 925HP did the LT's make more power.
The advantage of the LT's appears to be a very broad torque curve.... and that is the theoretical advantage of a "long tube"... more torque down low due to "tuning" the scavenging in the runners to lower rpm. A shorter tube moves the torque curve up, and that's why on a very high HP engine, that is only operated at 5K rpm and up, for example, mid- or short-tube headers may show an advantage under some condition. But the LT's seem to be killer for the street.
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colts0455
LT1 Based Engine Tech
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Jul 28, 2015 11:28 PM



