going Long tubes.... your thoughts TSP 1 3/4 vs 1 7/8
03-16-2012, 03:50 PM
#1
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going Long tubes.... your thoughts TSP 1 3/4 vs 1 7/8 I'm pulling my 806 heads to port them so I figure why not. I have a 224 / 224 568 568 114 lsa cam, ls6 intake, ported tb, TSP rumbler catback. MO Tune by frost.
I'm thining my car is hurting on the exaust end with my cam and it's a bit of a bottle neck. Going to do LT's and the ORY from TSP. I see that they now have a 1 3/4 and a 1 7/8 and that the 1 3/4 is cheaper. If you didn't guess i'm trying to save money , hence porting my own heads (buddy who does heads is going to assist). The money is being saved for the Final full dyno tune by Frost in Richmond, lucky me i'm so close.
Now it seams to me that i've read that the 1 3/4 can improve your torque over the 1 7/8 for some very fancy reason, Should I spend the extra 100 on the 1 7/8 with my setup or should I go with the 1 3/4?
TSP feel free to chime in.
Thanks
I'm thining my car is hurting on the exaust end with my cam and it's a bit of a bottle neck. Going to do LT's and the ORY from TSP. I see that they now have a 1 3/4 and a 1 7/8 and that the 1 3/4 is cheaper. If you didn't guess i'm trying to save money , hence porting my own heads (buddy who does heads is going to assist). The money is being saved for the Final full dyno tune by Frost in Richmond, lucky me i'm so close.
Now it seams to me that i've read that the 1 3/4 can improve your torque over the 1 7/8 for some very fancy reason, Should I spend the extra 100 on the 1 7/8 with my setup or should I go with the 1 3/4?
TSP feel free to chime in.
Thanks
03-16-2012, 04:05 PM
#2
1 7/8. this subject is beat to death so much i cant believe how much it is asked lol. (not flaming you op). but when the TSP longtubes first came out they posted dyno graphs showing the 1 7/8 headers having no disadvantages compared to the 1 3/4 headers. only advantages through the RPM's. 1 7/8 headers and dont look back.
03-16-2012, 04:26 PM
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"dyno graphs showing the 1 7/8 headers having no disadvantages compared to the 1 3/4 headers"
Appreciate the reply but i'm confused.
No disadvantages but what is the advantage? If it's an advantage with radical head/cam combos it may not be relevant to me is why i was asking. From what I understand backpressure isn't always evil and you CAN have too big of an exhaust.
Also, TSP just released the 1 3/4 I thought (could be wrong), you don't know where I can find those dyno graphs do you? and do you know if they were the ones with the velocity spike? I did a search for TSP 1 7/8 vs 1 3/4 before posting and didn't find anything relevant.
Appreciate the reply but i'm confused.
No disadvantages but what is the advantage? If it's an advantage with radical head/cam combos it may not be relevant to me is why i was asking. From what I understand backpressure isn't always evil and you CAN have too big of an exhaust.
Also, TSP just released the 1 3/4 I thought (could be wrong), you don't know where I can find those dyno graphs do you? and do you know if they were the ones with the velocity spike? I did a search for TSP 1 7/8 vs 1 3/4 before posting and didn't find anything relevant.
03-16-2012, 04:35 PM
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Do a search this topic has been discussed wayyy to many times.
Go with the 1 7/8" and don't look back. They have been dynoed on stock cube stock engines, and big 408s. I searched myself when I was in the market for replacing my rusted pacesetters.
Go with the 1 7/8" and don't look back. They have been dynoed on stock cube stock engines, and big 408s. I searched myself when I was in the market for replacing my rusted pacesetters.
03-16-2012, 05:02 PM
#5
https://ls1tech.com/forums/generatio...o-results.html
And the stepped header claim:
http://www.camaro5.com/forums/showthread.php?t=157314
And the stepped header claim:
http://www.camaro5.com/forums/showthread.php?t=157314
03-16-2012, 06:40 PM
#6
I'm pulling my 806 heads to port them so I figure why not. I have a 224 / 224 568 568 114 lsa cam, ls6 intake, ported tb, TSP rumbler catback. MO Tune by frost.
I'm thining my car is hurting on the exaust end with my cam and it's a bit of a bottle neck. Going to do LT's and the ORY from TSP. I see that they now have a 1 3/4 and a 1 7/8 and that the 1 3/4 is cheaper. If you didn't guess i'm trying to save money , hence porting my own heads (buddy who does heads is going to assist). The money is being saved for the Final full dyno tune by Frost in Richmond, lucky me i'm so close.
Now it seams to me that i've read that the 1 3/4 can improve your torque over the 1 7/8 for some very fancy reason, Should I spend the extra 100 on the 1 7/8 with my setup or should I go with the 1 3/4?
TSP feel free to chime in.
Thanks
I'm thining my car is hurting on the exaust end with my cam and it's a bit of a bottle neck. Going to do LT's and the ORY from TSP. I see that they now have a 1 3/4 and a 1 7/8 and that the 1 3/4 is cheaper. If you didn't guess i'm trying to save money , hence porting my own heads (buddy who does heads is going to assist). The money is being saved for the Final full dyno tune by Frost in Richmond, lucky me i'm so close.
Now it seams to me that i've read that the 1 3/4 can improve your torque over the 1 7/8 for some very fancy reason, Should I spend the extra 100 on the 1 7/8 with my setup or should I go with the 1 3/4?
TSP feel free to chime in.
Thanks
03-16-2012, 09:15 PM
#7
https://ls1tech.com/forums/generatio...o-results.html
And the stepped header claim:
http://www.camaro5.com/forums/showthread.php?t=157314
And the stepped header claim:
http://www.camaro5.com/forums/showthread.php?t=157314
Trending Topics
03-16-2012, 09:46 PM
#8
https://ls1tech.com/forums/dynamomet...-tune-odd.html
03-16-2012, 11:45 PM
#10
I like to think so, I mean it is the same theory. Here are some dyno results with stepped headers on a LS1.
https://ls1tech.com/forums/dynamomet...-tune-odd.html
https://ls1tech.com/forums/dynamomet...-tune-odd.html
03-17-2012, 03:26 AM
#11
Appreciate the reply but i'm confused.
No disadvantages but what is the advantage? MORE HP AND TQ THROUGH THE ENTIRE RPM RANGEIf it's an advantage with radical head/cam combos it may not be relevant to me is why i was asking. 1 7/8 ARE AN IMPROVEMENT WITH STOCK LS1 MOTORS From what I understand backpressure isn't always evil and you CAN have too big of an exhaust. YES YOU CAN, BUT HAVE YOU SEEN THE HEADS ON THESE MOTORS COMPARED TO THE SBC? THE LS1 MOVES WAY MORE AIR
Also, TSP just released the 1 3/4 I thought (could be wrong), you don't know where I can find those dyno graphs do you?NO and do you know if they were the ones with the velocity spike?THEY WERE NOT. THOSE ARE A NEW DESIGN I did a search for TSP 1 7/8 vs 1 3/4 before posting and didn't find anything relevant.THE DYNO WAS DONE BY A TSP EMPLOYEE. SEARCH THEIR POSTS. IT WILL SHOW
No disadvantages but what is the advantage? MORE HP AND TQ THROUGH THE ENTIRE RPM RANGEIf it's an advantage with radical head/cam combos it may not be relevant to me is why i was asking. 1 7/8 ARE AN IMPROVEMENT WITH STOCK LS1 MOTORS From what I understand backpressure isn't always evil and you CAN have too big of an exhaust. YES YOU CAN, BUT HAVE YOU SEEN THE HEADS ON THESE MOTORS COMPARED TO THE SBC? THE LS1 MOVES WAY MORE AIR
Also, TSP just released the 1 3/4 I thought (could be wrong), you don't know where I can find those dyno graphs do you?NO and do you know if they were the ones with the velocity spike?THEY WERE NOT. THOSE ARE A NEW DESIGN I did a search for TSP 1 7/8 vs 1 3/4 before posting and didn't find anything relevant.THE DYNO WAS DONE BY A TSP EMPLOYEE. SEARCH THEIR POSTS. IT WILL SHOW
03-17-2012, 04:59 AM
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If you don't already have 1 3/4" headers than go ahead and buy the 1 7/8" header.
Dyno numbers are always subject to many variables. Plus or minus 10rwhp could be from anything.
Plan for the future, you will need 1 7/8" headers if you get a supercharger or increase your CI's someday. I had no intentions of ever installing a supercharger but got the 1 7/8" header just in case I might someday. I'm having a supercharger installed this spring.
New ported heads, new larger headers. For the love of god please lets not get into the step header bullshit.
Ps. I'm in love with Johnnystock's avatar. Do you have any movies of her?
Dyno numbers are always subject to many variables. Plus or minus 10rwhp could be from anything.
Plan for the future, you will need 1 7/8" headers if you get a supercharger or increase your CI's someday. I had no intentions of ever installing a supercharger but got the 1 7/8" header just in case I might someday. I'm having a supercharger installed this spring.
New ported heads, new larger headers. For the love of god please lets not get into the step header bullshit.
Ps. I'm in love with Johnnystock's avatar. Do you have any movies of her?
03-17-2012, 09:40 AM
#14
Good info....
Originally Posted by Brian Tooley
I've posted this about a thousand times, but I'm going to post it one more time.
In the back to back testing we did, heads with 1.55" exhaust valves MADE MORE POWER EVERYWHERE WITH 1 7/8" HEADERS COMPARED TO 1 3/4"
Heads with 1.57" valves seemed to make about the same power either way.
The AFR heads with 1.60" valves made less power with Kooks 1 7/8" headers compared to Hooker 1 3/4" with a cam that had 2 degree split.
So in my humble opinion, his headers were helping his stock heads, but worked against the AFR heads.
I've posted this about a thousand times, but I'm going to post it one more time.
In the back to back testing we did, heads with 1.55" exhaust valves MADE MORE POWER EVERYWHERE WITH 1 7/8" HEADERS COMPARED TO 1 3/4"
Heads with 1.57" valves seemed to make about the same power either way.
The AFR heads with 1.60" valves made less power with Kooks 1 7/8" headers compared to Hooker 1 3/4" with a cam that had 2 degree split.
So in my humble opinion, his headers were helping his stock heads, but worked against the AFR heads.
03-17-2012, 07:20 PM
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Was unable to get to the computer today and just saw all the input. Thanks everyone. I will wade through the dyno graphs tonight! Sorry if this is an abundantly posted topic. I really didn't see any others about it when I searched but maybe I looked for the wrong thing.
Thanks again!
Thanks again!
