Speed Engineering LT1 Stainless Longtubes Now Available!!
04-07-2014, 11:18 AM
#41
Shoot even our LS1 Y-Pipe probably isn't that far off. The LS1 & LT1 Y-pipes with longtubes are very similar. If someone is down for test fitting our LS1 Y-Pipe with them I will send one out for free with a purchase of a set of headers. We just don't have too many LT1's coming through that I can test it on.
Sean
Sean
04-07-2014, 12:08 PM
#42
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Shoot even our LS1 Y-Pipe probably isn't that far off. The LS1 & LT1 Y-pipes with longtubes are very similar. If someone is down for test fitting our LS1 Y-Pipe with them I will send one out for free with a purchase of a set of headers. We just don't have too many LT1's coming through that I can test it on.
Sean
Sean
04-07-2014, 02:08 PM
#43
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Shoot even our LS1 Y-Pipe probably isn't that far off. The LS1 & LT1 Y-pipes with longtubes are very similar. If someone is down for test fitting our LS1 Y-Pipe with them I will send one out for free with a purchase of a set of headers. We just don't have too many LT1's coming through that I can test it on.
Sean
Sean
04-09-2014, 10:02 PM
#48
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IIRC I think I read on LPPs website that the only mod to get a ls1 y-pipe to fit the lt1 is to shorten one of the pipes. lol not much to go on I know, but it's not much modifying to get it to fit.
04-10-2014, 07:41 PM
#49
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looking to do longtubes on a 94 lt1 firebird formula. was looking at the new speed engineering kit. would also like to run true duels instead of a ypipe/single. question is do i have to run an x or h pipe, or can i just run pipes off the headers all the way back? thanks guys.
04-10-2014, 10:17 PM
#50
Its up to you. Most say true duals usually see the most hp through an x-pipe. Some guys like the sound of an H-Pipe better. Honestly, there is probably not much difference in hp between an X & H Pipe. However, we have never tested the difference of the two on the dyno. There is a pretty significant difference with having and X-Pipe compared to without though.
Thanks
Sean
Thanks
Sean
04-10-2014, 10:34 PM
#51
I'm not talking about Flowmaster or Magnaflow actual Y pipes. I'm with you I don't think they make one. What I mean is using just the merge magnaflow makes, or the one Flowmaster makes. I'm going to attach pics of what I mean. They are of a custom Y pipe another member here made for his LPP headers instead of the poor design of the one supplied. The merge he used is a magnaflow stainless steel merge, they cost like $31 from summit. Flowmaster makes one that's pretty good too. I have never understood why most of these aftermarket companies make such junk Y pipes. I think Mufflex is the only one worth using...and I think they actually use the flowmaster merge. Anyway here are the pics. Don't know what it would cost but I can't imagine it would be too much more than what's currently made and I'm sure buyers would prefer a Y that is a better design all the way around.
04-15-2014, 11:59 AM
#56
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http://s1096.photobucket.com/user/WC...tube%20Install
That will be my list of pics for this install, along with pics of y-pipe fitting and everything else.
These things pretty well built. Welds seem solid, I have seen better, but I have seen a LOT worse. I'm not the least bit worried about the welds now that I have seem them. Y-pipe welds are the same, seems/looks strong!
About to go instal my new spark plug wires, and then I am going to tackle the headers throughout the week.
04-15-2014, 07:30 PM
#57
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Found a few problems so far.
Headers are a GREAT fit on the driver side, all we had to do was remove the steering column knuckles and it went right in.
Problem one.
The bolts that were sent with this kit, are to small, the threads don't thread into the head. Luckily we had some MR. Gasket bolts lying around so we used those.
Also, not sure if this is me being a noob or what, but, on the actual Y, the part going into the exhaust is 2.5", but the pipe for it is 3"?
Other then that, it seems to be good. Those gaskets that were sent with the kit, are rather strong!
Headers are a GREAT fit on the driver side, all we had to do was remove the steering column knuckles and it went right in.
Problem one.
The bolts that were sent with this kit, are to small, the threads don't thread into the head. Luckily we had some MR. Gasket bolts lying around so we used those.
Also, not sure if this is me being a noob or what, but, on the actual Y, the part going into the exhaust is 2.5", but the pipe for it is 3"?
Other then that, it seems to be good. Those gaskets that were sent with the kit, are rather strong!
04-15-2014, 09:57 PM
#58
Cool, ya I believe the current bolts are LS1 bolts. For some reason our batch had LS1 bolts in the box instead of LT1.
I knew the Y-Pipe was going to be smaller at the end due to the it being an LS1 Y-Pipe that merges into a stock 2 1/2" Cat-Back. I was thinking if we just cut the 2 1/2" reducer off it might be able to be welded to your 3" cat-back if everything else fit.
So I guess my main question is did everything fit together. Say, if we offered the Y-Pipe with a 2 1/2" reducer cut off would it work as a complete kit?
Thanks for the pictures/comments.
Sean
I knew the Y-Pipe was going to be smaller at the end due to the it being an LS1 Y-Pipe that merges into a stock 2 1/2" Cat-Back. I was thinking if we just cut the 2 1/2" reducer off it might be able to be welded to your 3" cat-back if everything else fit.
So I guess my main question is did everything fit together. Say, if we offered the Y-Pipe with a 2 1/2" reducer cut off would it work as a complete kit?
Thanks for the pictures/comments.
Sean
04-16-2014, 05:48 AM
#59
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Cool, ya I believe the current bolts are LS1 bolts. For some reason our batch had LS1 bolts in the box instead of LT1.
I knew the Y-Pipe was going to be smaller at the end due to the it being an LS1 Y-Pipe that merges into a stock 2 1/2" Cat-Back. I was thinking if we just cut the 2 1/2" reducer off it might be able to be welded to your 3" cat-back if everything else fit.
So I guess my main question is did everything fit together. Say, if we offered the Y-Pipe with a 2 1/2" reducer cut off would it work as a complete kit?
Thanks for the pictures/comments.
Sean
I knew the Y-Pipe was going to be smaller at the end due to the it being an LS1 Y-Pipe that merges into a stock 2 1/2" Cat-Back. I was thinking if we just cut the 2 1/2" reducer off it might be able to be welded to your 3" cat-back if everything else fit.
So I guess my main question is did everything fit together. Say, if we offered the Y-Pipe with a 2 1/2" reducer cut off would it work as a complete kit?
Thanks for the pictures/comments.
Sean
04-16-2014, 07:38 AM
#60
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Found a few problems so far.
Headers are a GREAT fit on the driver side, all we had to do was remove the steering column knuckles and it went right in.
Problem one.
The bolts that were sent with this kit, are to small, the threads don't thread into the head. Luckily we had some MR. Gasket bolts lying around so we used those.
Also, not sure if this is me being a noob or what, but, on the actual Y, the part going into the exhaust is 2.5", but the pipe for it is 3"?
Other then that, it seems to be good. Those gaskets that were sent with the kit, are rather strong!
Headers are a GREAT fit on the driver side, all we had to do was remove the steering column knuckles and it went right in.
Problem one.
The bolts that were sent with this kit, are to small, the threads don't thread into the head. Luckily we had some MR. Gasket bolts lying around so we used those.
Also, not sure if this is me being a noob or what, but, on the actual Y, the part going into the exhaust is 2.5", but the pipe for it is 3"?
Other then that, it seems to be good. Those gaskets that were sent with the kit, are rather strong!