Organized Drag Racing and AutocrossDrag racing and autocross discussions and questions. Techniques, tips, suggestions, and "what will I run?" questions.
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im gonna be taking my car to the drag strip for the first time since the lt1 swap and i wanna make sure i get the best times out of it that i can,so im lookin for some little tips/tricks to help out,so far i'm gonna drop the rear tires to 30psi,open the exhaust cutout and i was thinking of maybe taking the air filters out,has anybody tried this with ram air?will it help or just mess with the maf sensor?also would it help or hurt if i put a couple gallons of 110 octane race fuel in it,if anybody has any suggestions on squeezing the best times out of my car id love to here em',thanks in advance.
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The best thing you can do is try different things and see if you gain or lose e.t. Since every car is different, it is hard to say what will work for yours without actually doing it. With my TPI, I took the air filters out and unhooked the tubing and was over .5 second slower. If you are running street tires, I would stay out of the water and just do a short burnout to clean the tires. You'll have to mess around with tire psi also. I can't remember what I used with street tires but I wouldn't go below 20-25 psi. I'm sure others on here will have some insight on that. Just try to only change one thing between each pass that way you know exactly what it was that changed the e.t. (That is my problem. I try to change too many things at once and don't know what made a difference and what didn't)
__________________ 1992 z28 350 5 speed drag car
headers, edelbrock 600 cfm carb, 1 gal fuel cell under hood
4.11 gears
26" Hoosier QTP's
best time: (w/ TPI, full interior, 3.73 rear) 13.24@ 103.24 w/ 60': 1.84
No times yet w/ current set up. Still working out the kinks. Many, Many kinks
im gonna be taking my car to the drag strip for the first time since the lt1 swap and i wanna make sure i get the best times out of it that i can,so im lookin for some little tips/tricks to help out,so far i'm gonna drop the rear tires to 30psi,open the exhaust cutout and i was thinking of maybe taking the air filters out,has anybody tried this with ram air?will it help or just mess with the maf sensor?also would it help or hurt if i put a couple gallons of 110 octane race fuel in it,if anybody has any suggestions on squeezing the best times out of my car id love to here em',thanks in advance.
I would go with a goal. Tell your self what you would like to accomplish and be realistic. Post your combo and i'm sure people will give predictions.
I have tried pulling air filters on otherwise stock LS1's and modern Hemi's and didn't gain anything. I wouldn't waste the effort. I also would save the money on the 110 because there's no need for it without exessive compression, timing, boost etc....
Your biggest thing will be to try to launch it well and hope your happy with what you built.
What ^ those guys have said is right on. You have to experiment and find out what works best for your combination. I'm not sure why you are running more than 30psi in your tires in the first place, but definitely stay above 20, likely somewhere around 25. Try launching just off idle and "flashing" the converter, as well as launching "on the converter" against the brakes.
__________________ Jp Shawgo
1986 camaro - 10.5 outlaw/Outlaw 632
1989 lead sled still awating its transformation
- If you can't afford to do it right the first time, can you afford to do it again?
I would go with a goal. Tell your self what you would like to accomplish and be realistic. Post your combo and i'm sure people will give predictions.
I have tried pulling air filters on otherwise stock LS1's and modern Hemi's and didn't gain anything. I wouldn't waste the effort. I also would save the money on the 110 because there's no need for it without exessive compression, timing, boost etc....
Your biggest thing will be to try to launch it well and hope your happy with what you built.
combo is in my sig and i'd be happy with a 12.9 but hopefully i can do a bit better than that.
It seems like you would have the stuff to go 12.9's.
But I would doubt if you did it with that junk converter in there. I would take that to the woods and not come back with it.
Run it on through the exhaust and play with the tire pressure. Than open it up and fine tune the tire pressure. I bet it goes low 13's with a good MPH and a bad 60FT
It seems like you would have the stuff to go 12.9's.
But I would doubt if you did it with that junk converter in there. I would take that to the woods and not come back with it.
Run it on through the exhaust and play with the tire pressure. Than open it up and fine tune the tire pressure. I bet it goes low 13's with a good MPH and a bad 60FT
okay,how is my converter junk?and i,ve seen plenty of hot cammed lt1's run mid-low 12's with less mods than i got in a heavier car,and ive raced 3 low 13 second cars and put multiple lengths on all of them,so optimistcally speaking i would say 12.9 shouldn't be a problem but we'll see what happens.
Radial tires don't like low air pressure. The sidewalls are too stiff and won't roll over. Instead, the center of the tread will lift up off the pavement giving less traction. With radials, it's usually better to increase air pressure. As with all tires, run as much pressure as possible until the 60' time start to drop off.
Don't waste your money with 110 octane. If your engine doesn't ping/knock under load with premium pump gas, using 110 octane fuel won't make you go any faster. You only need enough octane to prevent detonation. Using a fuel with lead in in will kill your O2 sensor.
The easiest and cheapest way to go faster is to remove weight.
__________________
87 IROC-Z
All engine, no power adders! Bests: 9.348@144.71
I'm sorry, I read your sig in a rush and I thought it was one of those 2000 stall B+M converters. What exactly is it? I think it will play a big factor in your 60 ft.
I'm sorry, I read your sig in a rush and I thought it was one of those 2000 stall B+M converters. What exactly is it? I think it will play a big factor in your 60 ft.
How heavy is the car?
if i remember correctly it's a precision industries 2025 stall converter,and my race weight is 3440lbs
Thanks, thats kind of where I was going but it doesn't seem like it was understood. I tried to look that converter up with no luck. I'm curious to see where it actually is built to stall. I was thinking the same thing though.
you guys really think its gonna be that tough to pull a 12.9? i really thought i had it in the bag,anway heres a vid of a hot cammed lt1 4th gen W/2000 stall running a 12.7 with shifting problems: http://www.youtube.com/watch?v=Q0pVpGuDZlE ,he had 3.73's but pretty much the same mods i got in a heavier car,why would it be so hard for me to hit a 12.9?
Thanks, thats kind of where I was going but it doesn't seem like it was understood. I tried to look that converter up with no luck. I'm curious to see where it actually is built to stall. I was thinking the same thing though.
2000 stall + 3.23's = 13.30's @ 109
what didnt i understand? and as i said before i have raced 3 low 13 second cars, 2 run 13.3 and 1 run's 13.4 consistantly ,and i beat all 3 by at least 5-6 lengths multiple times,what gives?
It's very possible that i'm wrong. I'm no LT1 expert. I'm no fuel injection expert. It's just common that cars that are under geared and have the bare minimum torque converter usually perform around 40% less that what they are capable of. In your case I imagine that to be a low 13 seconed slip with a mid 12 second MPH.
I could be wrong again, of course, But I'd be curious to see how it does.
It's very possible that i'm wrong. I'm no LT1 expert. I'm no fuel injection expert. It's just common that cars that are under geared and have the bare minimum torque converter usually perform around 40% less that what they are capable of. In your case I imagine that to be a low 13 seconed slip with a mid 12 second MPH.
I could be wrong again, of course, But I'd be curious to see how it does.
yeah im definately no drag racing expert, just a little hobby of mine,i'm headed to the track the 31st and i'l post the results.
i think you should invest in a decent tire before you go. if you're looking to make a pass with the intention of putting down everything you can, you'll be leaving some on the table with a street tire. 12 second cars don't hook up without decent tires. 2.0 sixties don't equal 12 second time slips.
i'm just giving it to you straight foward like i'd like anyone else to do for me...
*1986 IROC-Z
1992 z28 350 5 speed drag car
