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09-04-2007, 01:24 AM
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#1 |
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Registered User
Join Date: Jan 2004
Location: Duluth, Mn
Posts: 162
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Back from the track new best times.
At Brainerd this weekend my old truck which weighed in at 4150 lbs finally got its act together after many months of troubleshooting. Went 11.41 @8psi then I upped the boost to 14psi and it went 11.01. I still felt something was wrong so I took 3 jet sizes out of the secondarys and then it went 10.78, 10.76 and on the final pass of the weekend 10.68@124.8. I think it's still richer than needed but without a wideband I'm not taking anymore out. Also the old turbos are pretty much maxed out so an upgrade is going to be needed this winter. I also met some other board members while there which was pretty cool. You know who you are and thanks for stopping by.
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85 GMC 1/2 ton LWB 4150lbs. 383 SBC with Twin MPT70 Turbos 850 CSU carb TH375 3.70 gears Ultimate 10" Converter 10.11@136.6 with 1.64 60ft. on 10.5-31-15W 
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09-04-2007, 08:13 AM
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#2 |
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Registered User
Join Date: Aug 2005
Location: Twin Cities, MN
Posts: 316
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Re: Back from the track new best times.
Bad, I wish I could have made it up there. I have to think that the time and speed you ran surprised a lot of people up there as they generally don't expect our trucks to be fast. Running 10s is no joke and takes a lot of thought and I'm sure $$$$$$$$$$$. Any videos we can watch? You have a pm.
Rob |
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09-04-2007, 08:16 AM
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#3 |
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River life......
Join Date: Oct 2005
Location: Soldotna AK
Posts: 1,078
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Re: Back from the track new best times.
Sweet! Too bad you are not closer, I would love to watch your truck run those times.
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09-04-2007, 11:42 AM
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#4 |
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Registered User
Join Date: Jan 2004
Location: Duluth, Mn
Posts: 162
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Re: Back from the track new best times.
I will hopefully have videos at some point. Have to wait for the camera person to put them on cd for me and others.
__________________
85 GMC 1/2 ton LWB 4150lbs. 383 SBC with Twin MPT70 Turbos 850 CSU carb TH375 3.70 gears Ultimate 10" Converter 10.11@136.6 with 1.64 60ft. on 10.5-31-15W
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09-07-2007, 09:18 AM
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#5 |
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Registered User
Join Date: Jan 2003
Location: Austin, TX
Posts: 824
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Re: Back from the track new best times.
Wow, sweet times. I don't recall seeing your truck on here. Do you have any pix of it?
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03-02-2008, 06:21 AM
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#6 |
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Senior Member
Join Date: Mar 2004
Location: Nebraska
Posts: 583
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Re: Back from the track new best times.
have you been doing anything with your truck and maybe new turbos yet?? i would love to see a right up on your truck.. i have built my motor for turbos or boost and like to see what others have done. by the way 10.68 thats skootin. did you have to Oring your block. i am going to try these cometic head gaskets. no sure if they will work but what the heck.. anyways good to see others on here running turbos...
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