PPE V8 Headers GS, LS, SC
Is it really worth it to get rid of the S&S headers for these new PPE long tube headers? I mean the hassle of uninstalling, selling my headers, buying the new ones and re-installing...all for what 5whp? If that? I can't see these headers yielding more than 5whp more than the S&S design.
This is a GREAT new mod for the guys that don't have headers yet but for those that already have the S&S ones; I don't think it's worth the cost of the switch. What do you think?
This is a GREAT new mod for the guys that don't have headers yet but for those that already have the S&S ones; I don't think it's worth the cost of the switch. What do you think?
Rock.. these are NOT long tube headers. Those are not planned yet for production and as JBrady pointed out will most likely not even prove to be worth it.
These are the "shorties" similar to the S&S and from the early dyno numbers seem to be close in HP\TQ.
Too early to tell, but even if they gain 5hp to me it would not be worth it to re-install.
These are the "shorties" similar to the S&S and from the early dyno numbers seem to be close in HP\TQ.
Too early to tell, but even if they gain 5hp to me it would not be worth it to re-install.
We finally finished the GS headers. We thought we would be able to just change the flange/collector angle to make them work, but the steering shaft was in a completely different spot. So we had to modify the tube routing on the driver side header. Over all specs are the same, just a little different rotation of the collector.
We just posted the group buy for both versions on in the group buy section. The two versions make these a direct bolt on for the LS/SC and GS 400 and 430 cars.
Group buy thread
We just posted the group buy for both versions on in the group buy section. The two versions make these a direct bolt on for the LS/SC and GS 400 and 430 cars.
Group buy thread
..
Lexus Champion
Joined: Feb 2001
Posts: 3,124
Likes: 32
From: Texas
We finally finished the GS headers. We thought we would be able to just change the flange/collector angle to make them work, but the steering shaft was in a completely different spot. So we had to modify the tube routing on the driver side header. Over all specs are the same, just a little different rotation of the collector.
We just posted the group buy for both versions on in the group buy section. The two versions make these a direct bolt on for the LS/SC and GS 400 and 430 cars.
Group buy thread
We just posted the group buy for both versions on in the group buy section. The two versions make these a direct bolt on for the LS/SC and GS 400 and 430 cars.
Group buy thread
Hopefully the GS design will also fit the SC430s.
Lexus Champion
Joined: Feb 2001
Posts: 3,124
Likes: 32
From: Texas
Worth noting is the GS400, LS400 and SC400 all have different manifolds with the GS400 and LS400 having dual tube tri-y type and the SC400 having a single tube design.
The 430 engines went back to the single tube design for early catalyst light off and have the same flange locations as the GS400 dual tube design.
The unknown here is the PPE design for the LS430 had interference with the steering on the GS430s necessitating a redesign. Until a set are tried on the SC430s it will not be known if the GS design will fit the SC430 and the LS430 design is almost certainly not a fit. Although it is possible that the GS design will fit the LS. If the GS design performs as well as the LS design it may make sense to build all of them to the GS configuration.
Any pictures of the GS design?
That is my understanding.
Worth noting is the GS400, LS400 and SC400 all have different manifolds with the GS400 and LS400 having dual tube tri-y type and the SC400 having a single tube design.
The 430 engines went back to the single tube design for early catalyst light off and have the same flange locations as the GS400 dual tube design.
The unknown here is the PPE design for the LS430 had interference with the steering on the GS430s necessitating a redesign. Until a set are tried on the SC430s it will not be known if the GS design will fit the SC430 and the LS430 design is almost certainly not a fit. Although it is possible that the GS design will fit the LS. If the GS design performs as well as the LS design it may make sense to build all of them to the GS configuration.
Any pictures of the GS design?
Worth noting is the GS400, LS400 and SC400 all have different manifolds with the GS400 and LS400 having dual tube tri-y type and the SC400 having a single tube design.
The 430 engines went back to the single tube design for early catalyst light off and have the same flange locations as the GS400 dual tube design.
The unknown here is the PPE design for the LS430 had interference with the steering on the GS430s necessitating a redesign. Until a set are tried on the SC430s it will not be known if the GS design will fit the SC430 and the LS430 design is almost certainly not a fit. Although it is possible that the GS design will fit the LS. If the GS design performs as well as the LS design it may make sense to build all of them to the GS configuration.
Any pictures of the GS design?
So the LS430 headers we did should fit all the 430 cars it would seem since they all use the same stock manifold, yes? And the GS400 headers will only fit the GS400.
Looking at diagrams of the different steering gears in the different models/years. It looks like the LS430 headers should fit the GS430 too, but the SC is steering gear box is a bit different. We will have to get one in to take a look.
For now we should have the GS400, GS430 and LS430 covered.
We are starting on the IS-F this week, so the SC cars will have to wait a bit.
For now we should have the GS400, GS430 and LS430 covered.
We are starting on the IS-F this week, so the SC cars will have to wait a bit.
guys....in cause you didnt know these are for sale.
he's asking for a $100 deposit and then in 4-5 weeks the balance. if we get 2 more people we'll get 10% off
https://www.clublexus.com/forums/clu...ml#post5937526
he's asking for a $100 deposit and then in 4-5 weeks the balance. if we get 2 more people we'll get 10% off
https://www.clublexus.com/forums/clu...ml#post5937526