2" TSP Stainless 4th Gen Fbody Headers
01-17-2015, 04:16 PM
#1
2" TSP Stainless 4th Gen Fbody Headers OK, been talking with Beau at Texas Speed and trying to persuade them into building a 2" primary header for the 4th gens.
Here is the link with more information. Post up any questions or interest in that other thread so Beau can gauge the interest level. If there is enough interest, they will produce them.
https://ls1tech.com/forums/group-pur...l#post18621010
Mike
Here is the link with more information. Post up any questions or interest in that other thread so Beau can gauge the interest level. If there is enough interest, they will produce them.
https://ls1tech.com/forums/group-pur...l#post18621010
Mike
01-19-2015, 07:27 AM
#6
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No. I bet if you had an engine dyno using 3 different long tube headers from the same exact company 1 3/4" 1 7/8" and 2" primary, that each bigger size would pick up power and at the same time not lose bottom end power. My next bet on a stock cube engine a 2 1/4" primary or larger would start showing a lost wether it was mid or high rpm. Of course for every mod you continue to do to that engine you should always be gaining more power then the smaller size header primary as well as it has a good collector design and proper size.
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01-19-2015, 09:35 PM
#8
There's comes a point of diminishing returns and I simply can't see a 2" primary offering anything over what a 346 can possibly exhale to begin with.
As Blu said, I'm willing to bet Kooks or ARH have tried this and there's simply nothing to be gained.
01-20-2015, 07:10 AM
#9
I totally disagree. No way a 2" header is not going to pick up on a heads, cam, intake, full bolt on LS1. I'm pretty sure this was once said about 1 7/8 headers before they became the go to header for even a bolt on only LS1. I would take a 2" header over a 1 7/8 header everyday of the week.
01-20-2015, 07:29 AM
#10
I totally disagree. No way a 2" header is not going to pick up on a heads, cam, intake, full bolt on LS1. I'm pretty sure this was once said about 1 7/8 headers before they became the go to header for even a bolt on only LS1. I would take a 2" header over a 1 7/8 header everyday of the week.
A 346 is only going to move "so much" air on its own.
01-20-2015, 08:27 AM
#11
I have not seen that thread, but I will search for it. I had all intentions of making the switch over to turbo, but I'm scraping that idea. I'm going to stay the course and continue to upgrade my NA setup, with all intentions of adding a D1SC Procharger down the road (likely well down the road). I think for my setup, I'll benefit from the 2" headers. I know my current setup is being restricted big time by the intake and headers (currently 1 3/4 with 2.5 collectors), but that will soon be rectified by getting the TSP 2" headers and likely the new MSD intake. I can't wait to make those upgrades and get the car back on the dyno to see how much it picked up.
01-20-2015, 08:18 PM
#15
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2 Inch Headers 1 7/8 of Comparable length primary, collector size & design will outperform
2" up to at least 700 probably 750+ NA Crank HP!
Tony Mamo made 731 Crank HP W/ 1 3/4" on a Max 454 LS, he felt
1 7/8" would have added 10-12, 15 Max.
Brian Tooley also built a 700 Crank NA HP 454 for his 9 sec Vette that I believe also Used 1 7/8" Headers.
Tests I have seen over the years with BBC 500+" did not show
Benefits with 2" over 1 7/8" until 750-800 Crank HP
2" up to at least 700 probably 750+ NA Crank HP!
Tony Mamo made 731 Crank HP W/ 1 3/4" on a Max 454 LS, he felt
1 7/8" would have added 10-12, 15 Max.
Brian Tooley also built a 700 Crank NA HP 454 for his 9 sec Vette that I believe also Used 1 7/8" Headers.
Tests I have seen over the years with BBC 500+" did not show
Benefits with 2" over 1 7/8" until 750-800 Crank HP
01-21-2015, 09:27 AM
#17
Everyone should know that this isn't for a bolt on 3600 lbs street car. But I think a procharged car and nitrous car would gain for sure. Heads and cam would depending on how radical. I treat my little 346 like a race engine and abuse it. If these headers come out I would do a little test on the dyno and get real world results.
01-21-2015, 10:19 AM
#18
Everyone should know that this isn't for a bolt on 3600 lbs street car. But I think a procharged car and nitrous car would gain for sure. Heads and cam would depending on how radical. I treat my little 346 like a race engine and abuse it. If these headers come out I would do a little test on the dyno and get real world results.
