92 Stock Exhaust Limits
Thread Starter
Racer
Joined: Jul 2014
Posts: 266
Likes: 20
From: Philadelphia Pa
92 Stock Exhaust Limits
Hey guys,
Curious if anybody has experience with the stock exhaust and headers and where it starts to choke off engine modifications. To give an idea I would like to throw in an LT4 hot cam and some new heads on the engine (still deciding which ones) but just want to make sure that fuel delivery and exhaust won't hide any HP from the mods. Fuel delivery sounds like it'll be fine from some preliminary research but I couldn't find anything on the exhaust and whether or not it was necessary to open it up more. Key word is necessary.
Cheers
Curious if anybody has experience with the stock exhaust and headers and where it starts to choke off engine modifications. To give an idea I would like to throw in an LT4 hot cam and some new heads on the engine (still deciding which ones) but just want to make sure that fuel delivery and exhaust won't hide any HP from the mods. Fuel delivery sounds like it'll be fine from some preliminary research but I couldn't find anything on the exhaust and whether or not it was necessary to open it up more. Key word is necessary.
Cheers
Team Owner
Joined: Oct 2004
Posts: 81,241
Likes: 3,063
From: altered state
St. Jude Donor '05
If it did its not worth the money just do headers. An Ultraflow and tossing the cats/resonators may help some but again is it worth your time?
Last LT4 I screwed around with had ported heads, hotcam dougs shorie headers stock exh..ported intake stock TB. Deep in the 12s in Ca air, passed smog. It would have slaughtered my ZR1 which couldnt get out of the 13s.
With 2 guys it would light the tires up...good enough? An AFR head would have been even better. 392rhwp...tune was a hair lean and dyno has a rep for being generous...time slip doesnt lie though
Last LT4 I screwed around with had ported heads, hotcam dougs shorie headers stock exh..ported intake stock TB. Deep in the 12s in Ca air, passed smog. It would have slaughtered my ZR1 which couldnt get out of the 13s.
With 2 guys it would light the tires up...good enough? An AFR head would have been even better. 392rhwp...tune was a hair lean and dyno has a rep for being generous...time slip doesnt lie though
Thread Starter
Racer
Joined: Jul 2014
Posts: 266
Likes: 20
From: Philadelphia Pa
@cuisinartvette this is exactly the type of response I was looking for thanks! How about the stock headers? I know you mentioned that you were messing around with a car with shortie headers on there. Any reason to absolutely do this mod? I'm not trying to cut corners but also don't want to bother with anything that isn't an immediate road block.
Good to hear that the car with those mods was way quick! I'm knee deep in head research looking for the best bang for the buck. I don't have a target HP or timeslip so I know that question is impossible to answer currently
Good to hear that the car with those mods was way quick! I'm knee deep in head research looking for the best bang for the buck. I don't have a target HP or timeslip so I know that question is impossible to answer currently
Last edited by hockeyhead019; May 14, 2019 at 04:07 PM.
Tech Contributor
Joined: Jun 2004
Posts: 20,910
Likes: 962
From: I tend to be leery of any guy who doesn't own a chainsaw or a handgun.
Hey guys,
Curious if anybody has experience with the stock exhaust and headers and where it starts to choke off engine modifications. To give an idea I would like to throw in an LT4 hot cam and some new heads on the engine (still deciding which ones) but just want to make sure that fuel delivery and exhaust won't hide any HP from the mods. Fuel delivery sounds like it'll be fine from some preliminary research but I couldn't find anything on the exhaust and whether or not it was necessary to open it up more. Key word is necessary.
Cheers
Curious if anybody has experience with the stock exhaust and headers and where it starts to choke off engine modifications. To give an idea I would like to throw in an LT4 hot cam and some new heads on the engine (still deciding which ones) but just want to make sure that fuel delivery and exhaust won't hide any HP from the mods. Fuel delivery sounds like it'll be fine from some preliminary research but I couldn't find anything on the exhaust and whether or not it was necessary to open it up more. Key word is necessary.
Cheers
