1/8th to 1/4
- Thread starter FoxRod87
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LaserRed01GT
Banned
The NHRA conversion is to mulitply the ET b 1.55. There really isn't a general rule of thumb to convert the MPH. 88 MPH in the 1/8th sure is a strong number for a 03 Mach 1 with just gears and exhaust.
BurningRubber
10 Year Member
- Dec 6, 2004
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I dont think that Mach is running 7.79 in the 1/8th w/ just gears and exhaust. Thats somewhere around a 12 flat in the 1/4 mile.
helty
some Ukrainian's enjoying a handjob via my credit
maybe 8.79, definitely not 7.79.
theres not magic forumula, no special calculator that will give you a real accurate 1/8 to 1/4 conversion. They may give you a rough idea, but there are way to many variables to consider.
theres not magic forumula, no special calculator that will give you a real accurate 1/8 to 1/4 conversion. They may give you a rough idea, but there are way to many variables to consider.
Stan Weiss
Member
I will guess 12.20 at 108 MPH. That said what was his 60 foot time? What kind of rear tires was he running? What gear ratio did he have in the rear?
Stan Weiss
Member
That is a pretty good 60 foot time. Based on that with the other times his 1/4 time maybe closer to 12.3-12.35.
LaserRed01GT
Banned
Very impressive 60 footer and 1/8 mile numbers. The 4.30's and the ET streets earned him the good little end numbers.
Your buddy need to get the 60's on down. Get the ET Street off and put a set of 26x10 ET Drags. What's done to the suspension? If you can get your buddy on here I would like to know his launch and shift RPM. Also how much air pressure was he running in the ET Streets.
mustangman9812
10 Year Member
crzyhrse99
Active Member
http://www.eldemoniorojo.com/calculator.htm
Like someone else said, too many variables .....but heres an estimated chart.
Like someone else said, too many variables .....but heres an estimated chart.
propellerhead
New Member
LaserRed01GT
Banned
Yeah, I have seen quite a few different variances of the multipliers throughout different NHRA and IHRA literature as well. But they are just to roughly estimate what your 1/4 ET would be, and if we take them to mean just that they are a pretty good tool.
Only thing is they don't account for alot of the variables like has already been noted. It is not uncommon for a relatively stock car to rip some awesome 60 ft, 330 ft, and 1/8 mile numbers, especially with alot of gear and slicks. The big end of the 1/4 is where the HP really factors in. So if this same guy were to run an actual 1/4 mile, he might actually be more in the upper 12's.
Nevertheless, he has a car that is digging pretty hard for a relatively unmodded chassis/suspension.
Only thing is they don't account for alot of the variables like has already been noted. It is not uncommon for a relatively stock car to rip some awesome 60 ft, 330 ft, and 1/8 mile numbers, especially with alot of gear and slicks. The big end of the 1/4 is where the HP really factors in. So if this same guy were to run an actual 1/4 mile, he might actually be more in the upper 12's.
Nevertheless, he has a car that is digging pretty hard for a relatively unmodded chassis/suspension.
Gearbanger. A 1.64 does suck when you go 1.25-1.28 on average. 
If the car has any suspesion mod it should go 1.55-1.58. But alot depend on getting the car to hook. The track prep, tires, suspension adjustment, etc, etc. He would see alot of improvement by getting a real set of slicks:nice. I have never had any luck with the ET Street.
If the car has any suspesion mod it should go 1.55-1.58. But alot depend on getting the car to hook. The track prep, tires, suspension adjustment, etc, etc. He would see alot of improvement by getting a real set of slicks:nice. I have never had any luck with the ET Street.
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