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11.83 on gas and 12.77 all motor


2bseen

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I went to the track today in my Silverado SS with my new 408ci motor. I ran all motor and went 12.77 with a 1.70 60 ft at 103. I also have 2 stages of n2o, one is a nx wet kit with 50 shot and a nos dry kit with 75 shot. I spin and only get a 1.68 60ft and spray the dry shot on the top of 2nd gear up. I run a 11.83 at 113.6 mph with a 7.52 1/8. I run 2 more times and spin bad and run 11.85 and 11.86. I had 3 problems today 1st being the exhaust pipe is hitting the frame and dropping my timing to 21 degrees. 2nd the n20 has a 2500 pill and needs to be a 2800 or 3k to turn the wet kit on and it has a 6k shutoff that needs to be 6200 or 6300 so the hit from n2o is not hitting till after I start rolling maybe it will help on the spinning problem. 3rd I need to take the 20s off and get some 18s or 17s with drag radials so it will hook out of the hole. I should have hit the dry kit right out of the hole but was trying not to break something the first time out.

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I went to the track today in my Silverado SS with my new 408ci motor. I ran all motor and went 12.77 with a 1.70 60 ft at 103. I also have 2 stages of n2o, one is a nx wet kit with 50 shot and a nos dry kit with 75 shot. I spin and only get a 1.68 60ft and spray the dry shot on the top of 2nd gear up. I run a 11.83 at 113.6 mph with a 7.52 1/8. I run 2 more times and spin bad and run 11.85 and 11.86. I had 3 problems today 1st being the exhaust pipe is hitting the frame and dropping my timing to 21 degrees. 2nd the n20 has a 2500 pill and needs to be a 2800 or 3k to turn the wet kit on and it has a 6k shutoff that needs to be 6200 or 6300 so the hit from n2o is not hitting till after I start rolling maybe it will help on the spinning problem. 3rd I need to take the 20s off and get some 18s or 17s with drag radials so it will hook out of the hole. I should have hit the dry kit right out of the hole but was trying not to break something the first time out.

 

 

:cheers: The big blue truck was rolling today!! Can't wait to fix a few of the minor problems on it and step the shot up a little too! Also, the motor hasn't even got broken in good yet :D

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I went to the track today in my Silverado SS with my new 408ci motor. I ran all motor and went 12.77 with a 1.70 60 ft at 103. I also have 2 stages of n2o, one is a nx wet kit with 50 shot and a nos dry kit with 75 shot. I spin and only get a 1.68 60ft and spray the dry shot on the top of 2nd gear up. I run a 11.83 at 113.6 mph with a 7.52 1/8. I run 2 more times and spin bad and run 11.85 and 11.86. I had 3 problems today 1st being the exhaust pipe is hitting the frame and dropping my timing to 21 degrees. 2nd the n20 has a 2500 pill and needs to be a 2800 or 3k to turn the wet kit on and it has a 6k shutoff that needs to be 6200 or 6300 so the hit from n2o is not hitting till after I start rolling maybe it will help on the spinning problem. 3rd I need to take the 20s off and get some 18s or 17s with drag radials so it will hook out of the hole. I should have hit the dry kit right out of the hole but was trying not to break something the first time out.

 

now im really wanting to get my motor together great times man :thumbs:

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what converter?? those are damn nice 60's!!!  :cool:

 

12.77 sounds a little off, but it looks like you've found some problems.  defiantly not slow though!  I bet it will go 12.5 at LEAST

 

what cam are you running?

 

It is a PTC modified Yank that stalls around 3200 or so. He's running one of my custom cams that is pretty small for a 408, 230/234 .59x/.59x

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I think the 12.77 is petty fast for a over 5300# brick hitting the wind, it is almost .8 of a sec faster than 2nd on the list. Yes its a 408 but I was thinking it is about 60hp more than my factory motor. I was running it with full stereo, 2 tvs. all interior with 20" wheels. Yes I can see it running 12.5s but I don't think so on 20s with the weight I have.

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