help, i have a 408 with t76, what mod next?
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single digit dreamer
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From: omaha ne
help, i have a 408 with t76, what mod next? i am running a forged everything 408 with a good sized turbo cam and stock 6.0 heads. t76 at ~16psi and an air to water intercooler. my IAT's at the track yesterday were 190deg on a 50deg day. my mph and weight sugest 700+rwhp and that is with a 4l80 and 4wd. my boost controler is turned nearly all the way up. the boost might get to 17psi and that is it. my spring only presure is 10psi so i should be able to turn it up more.
20% driveline loss and my fuel useage sugests around 900fwhp.
any mod i want to do next is prety expensive and i was wondering where my money would be best spent.
huge intercooler?
afr225 heads?
bigger turbo?(t88 or larger
)
i am going to try some meth next week if that effects the decsion at all.
20% driveline loss and my fuel useage sugests around 900fwhp.
any mod i want to do next is prety expensive and i was wondering where my money would be best spent.
huge intercooler?
afr225 heads?
bigger turbo?(t88 or larger
)i am going to try some meth next week if that effects the decsion at all.
Thread Starter
single digit dreamer
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From: omaha ne
i think some of the high IAT's may be due to my turbo being out of it's range.
look at this map on the 76 and line up 90lb's and 2.1bar.... not so good, about 50%
now look at the 88 map, 90lb's an 2.1 bar... oh yeah, 78%
at 16psi that is about 80deg hoter air going into the intercooler with the 76 than i would see with the 88. it also computes to be about 5lb's more air at the same presure and then would have another 200+hp of head room for me to grow.
look at this map on the 76 and line up 90lb's and 2.1bar.... not so good, about 50%
now look at the 88 map, 90lb's an 2.1 bar... oh yeah, 78%
at 16psi that is about 80deg hoter air going into the intercooler with the 76 than i would see with the 88. it also computes to be about 5lb's more air at the same presure and then would have another 200+hp of head room for me to grow.
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Originally Posted by parish8
i think some of the high IAT's may be due to my turbo being out of it's range.
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Thread Starter
single digit dreamer
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From: omaha ne
Originally Posted by Wolfee
So what were your numbers at the track?
Wolfee
Wolfee
here is a vid from yesterday >> http://www.neufamily.org/1097andsrt10.wmv
Launching!
Joined: Apr 2003
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From: Phoenix, AZ.
The meth will help a ton but with summer coming you'll be back to square one. You really don't have room for an adequate air to air so I'd go with a big *** after cooler/ water to air. More volume with that small after cooler is only going to make matters worse. I personally would take care of that first and continue using the meth also. If you have any questions or want one built just drop me a e-mail.
Brett
Brett
I wondered if you still had those stock heads on there. Lots of power to be had in those heads!...Hmmm, You cant really do just one of the three choices, kinda all tied together. Save up for a little while & do all three.
Ryan
Ryan
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single digit dreamer
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From: omaha ne
Originally Posted by gator's 99TA
that is a small turbo for all those cubes and your goals. i say you are running out of turbo and intercooler is on its way.
what are your goals parrish?
what are your goals parrish?
Originally Posted by parish8
10.97 @123 and i had a best mph of 124.86 on one run. 4800lb's, no nitrous and i drove it to and from the track, about 50miles each way.
here is a vid from yesterday >> http://www.neufamily.org/1097andsrt10.wmv
here is a vid from yesterday >> http://www.neufamily.org/1097andsrt10.wmv
Wolfee
btw, great looking run and vids. have you thought about making the truck more drag oriented? aka 4 link and big slick RWD? i doubt it since youhave said you enjoy the street time in that truck.
very impressed.
very impressed.
