hot vs cold vs ET
09-07-2007, 10:24 AM
#22
Originally Posted by beastmode
so the fact that my 13.6 was in 90*+ means i got room for improvement w/o even modding 
99silvy, im never guna be able to touch ap's times haha. his 60's are nuts and his heads flow better. unless my truck magically jumps .36 in the 1/8 in the cold...that and im tired of spending money haha.
so whats yalls MPH differences heat vs cold.
09-07-2007, 12:06 PM
#23
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Originally Posted by TXsilverado
yes. get the longtubes on there and theres no reason you wouldnt be running solid 12's.
99silvy, im never guna be able to touch ap's times haha. his 60's are nuts and his heads flow better. unless my truck magically jumps .36 in the 1/8 in the cold...that and im tired of spending money haha.
so whats yalls MPH differences heat vs cold.
99silvy, im never guna be able to touch ap's times haha. his 60's are nuts and his heads flow better. unless my truck magically jumps .36 in the 1/8 in the cold...that and im tired of spending money haha.
so whats yalls MPH differences heat vs cold.
09-07-2007, 11:46 PM
#26
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i went from running 13.3's at 101 in 95+ humid weather to running 12.6's at 106-107 in perfect 50 deg weather. i think the DA was around 0 on the 12 runs. haha
09-08-2007, 11:32 AM
#27
Originally Posted by badblackhemi
i went from running 13.3's at 101 in 95+ humid weather to running 12.6's at 106-107 in perfect 50 deg weather. i think the DA was around 0 on the 12 runs. haha
were these runs you speak of your nitrous runs or motor runs? i think we can get that hemi running better with a few lil tricks 
get the camaro yet?
09-08-2007, 09:34 PM
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In my experience, you carbureted guys can figure one hundredth of a second per every one degree change in ambient air temperature from coldest to warmest during the year. (Of course, this is assuming all other parameters are identical, including the engine). I'm figuring most of you are running between 13.00 and 17.00. Quicker trucks will have less variance.
For EFI motors, it's closer to a hundredth for every TWO degrees. For nitrous applications, well....that's a whole 'nother atmosphere!
I used to race a carbureted '76 L48 Corvette which would swing a full second during the season (when untouched) from 15.0s to 16.0s in temps from 40 to 105. Results would've been a whole lot different if I'd rejetted!
For EFI motors, it's closer to a hundredth for every TWO degrees. For nitrous applications, well....that's a whole 'nother atmosphere!
I used to race a carbureted '76 L48 Corvette which would swing a full second during the season (when untouched) from 15.0s to 16.0s in temps from 40 to 105. Results would've been a whole lot different if I'd rejetted!
