View Poll Results: How many cubes for the street with a 76GTS tubular manifold kit?
36x"
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47
38.84%
37x"
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45
37.19%
38x"
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11
9.09%
402"
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18
14.88%
Voters: 121. You may not vote on this poll
How many cubes for street 76GTS?
#62
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Originally Posted by JZ 97 SS 1500
It will hit a wall. Then you will see the backpressure rise exponentially, very quickly.
Jose
Jose
#64
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Yep, with the 76GTS on 360 cid, I pulled 143 mph at 16 psi boost in a full weight F-body with a TH350. Actually, full stock weight + roll bar + turbo + water intercooler + water reservoir and 17" rims up front. My converter was flashing to 5400 rpm, but I just put my new one in, so I expect further improvements. Also, I'm running a log header and "crappy" blower cam.
#65
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Question can you fit anything bigger than a 76 on a LS1 ptk kit. I know its tight with the 76, but how tight. Wondering if you got to cut the Rad support to fit a 88. Jose very interested
#67
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Sounds like you are pulling the motor Steve. I already pulled my AC. Thats what I have TTops for. We live in VA not TX or NV. So I dont think I have the problem of needing my AC. I am going to run the 76 til I get the set up figured out. I had made plans to cut the support already. Figuring my 408 would amx out the 76. Hey if you come across a fragged 4L80E Let a brother know. Let me know.
#68
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Originally Posted by sagres
Sounds like you are pulling the motor Steve. I already pulled my AC. Thats what I have TTops for. We live in VA not TX or NV. So I dont think I have the problem of needing my AC. I am going to run the 76 til I get the set up figured out. I had made plans to cut the support already. Figuring my 408 would amx out the 76. Hey if you come across a fragged 4L80E Let a brother know. Let me know.
Haha, no prob, although I'm not past scooping it up for myself yet either
![Happy](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_stretch.gif)
...and NO I am DEFINITELY not pulling the motor... as a matter of fact I drove the car to work this morning for the first time in 11 months!! I still have some fuel issues but I have the car running at 8psi and about 12.5-13 degrees of actual timing. My AFR at WOT is still a bit fat, 9.9:1 (buried) as it spools and about 10.2:1 at full boost, but hey it's running and I can drive it around. I've got around 300-325 miles on this engine.
#69
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Originally Posted by sagres
Question can you fit anything bigger than a 76 on a LS1 ptk kit. I know its tight with the 76, but how tight. Wondering if you got to cut the Rad support to fit a 88. Jose very interested
#70
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Originally Posted by DrTurbo
On the PTS LS1 kit, I don't think anyone has tried to go bigger then a 76mm. I know the Gen 1 LT1 kit was designed for up to a 76GTS, and Jose put a PT88 in without a hitch. So the LS1 kit may do it as well.
#74
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Originally Posted by 96silverram
Wow, that is very tight. It looks like a 1/4 to 1/2 of space on each side.
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Originally Posted by Frost
Haha, no prob, although I'm not past scooping it up for myself yet either
...and NO I am DEFINITELY not pulling the motor... as a matter of fact I drove the car to work this morning for the first time in 11 months!! I still have some fuel issues but I have the car running at 8psi and about 12.5-13 degrees of actual timing. My AFR at WOT is still a bit fat, 9.9:1 (buried) as it spools and about 10.2:1 at full boost, but hey it's running and I can drive it around. I've got around 300-325 miles on this engine.
![Happy](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_stretch.gif)
...and NO I am DEFINITELY not pulling the motor... as a matter of fact I drove the car to work this morning for the first time in 11 months!! I still have some fuel issues but I have the car running at 8psi and about 12.5-13 degrees of actual timing. My AFR at WOT is still a bit fat, 9.9:1 (buried) as it spools and about 10.2:1 at full boost, but hey it's running and I can drive it around. I've got around 300-325 miles on this engine.
Your gonna foul out your plugs and o2 sensors if you keep running it like that though
![Happy](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_stretch.gif)
#80
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Originally Posted by 2000 Tran Zam
So have you had it dynoed yet? What are you waiting for to make your a/f more lean?
Your gonna foul out your plugs and o2 sensors if you keep running it like that though![Happy](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_stretch.gif)
Your gonna foul out your plugs and o2 sensors if you keep running it like that though
![Happy](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_stretch.gif)
After pulling the M6 to replace the rear seal I am geting a code for both knock sensors so I think something happened to the cable in the back. The default response for these codes is pulling full KR whenever the car goes into PE, so KR response is set to 0deg until I get that fixed. In the meantime I am keeping it SAFE. It's only PE that's rich. Part throttle tune and idle look good and I don't drive around WOT everywhere I go so I should be ok on the O2 front. I don't have enough fuel to really turn things up so the dyno is pointless right now too.
I'm just REALLY busy.... been out of town for 5 weeks, was out for the weekend until last night, and I'm leaving tomorrow AM for another week for work. I just have to do it as I can get to it, I'm not really "waiting for" anything but some free time.