first 1/4 mile times with stock engine.
12-08-2002, 11:18 AM
#1
Supreme Member
Thread Starter
Join Date: Jan 2002
Location: Hampton, VA
Posts: 1,449
Likes: 0
Received 0 Likes
on
0 Posts
first 1/4 mile times with stock engine.
well just for $hits and giggiles I went to pick up a friend of mine at a local r!cer car show that they were having in a parking lot.
well guess what they had there? a dyno. I thought cool why not, I need a base line for when I start to mod the car in a few weeks.
well before I tell you what my times where, I tell you some of the funny things I saw. I saw a civic hatchback (old model) run 18s
saw a 1st gen DSM run 14s and another 1st gen DSM run 17s when he busted his radiator. saw a early to mid 90s cobra get a 13.4 and the best run that I saw that night was a 4th gen formula run a 12.2 , people did say he was spraying though.
put my car up there and I was expecting mid to high 14s (stock 350) (auto)
I ran a 15.1 @90 MPH all three times. 60' times where 2.1
could I have done better? I tried doing a power launch (whatever you call it) braking then reving up to about 2500RPM and launching but that still got me a 15.1.
any ideas on how to launch on a dyno? (i'm doing another one on the 4th)
between now and then I'll have
heddmans headers/ y-pipe
high flow cat
hooker cat back
K&Ns
airfoil
and I need a new transmition mount (it's knocking when I launch hard, no big deal)
oh and some SFCs
what would be my times be then?
thanks
biker
well guess what they had there? a dyno. I thought cool why not, I need a base line for when I start to mod the car in a few weeks.
well before I tell you what my times where, I tell you some of the funny things I saw. I saw a civic hatchback (old model) run 18s
saw a 1st gen DSM run 14s and another 1st gen DSM run 17s when he busted his radiator. saw a early to mid 90s cobra get a 13.4 and the best run that I saw that night was a 4th gen formula run a 12.2 , people did say he was spraying though.
put my car up there and I was expecting mid to high 14s (stock 350) (auto)
I ran a 15.1 @90 MPH all three times. 60' times where 2.1
could I have done better? I tried doing a power launch (whatever you call it) braking then reving up to about 2500RPM and launching but that still got me a 15.1.
any ideas on how to launch on a dyno? (i'm doing another one on the 4th)
between now and then I'll have
heddmans headers/ y-pipe
high flow cat
hooker cat back
K&Ns
airfoil
and I need a new transmition mount (it's knocking when I launch hard, no big deal)
oh and some SFCs
what would be my times be then?
thanks
biker
12-08-2002, 12:37 PM
#2
TGO Supporter
i ran a 15.3 my first time with my car..
i got my launching squared away and my 60 foot down a bit. and i ran 14.5's, its alittle quicker when the engine temp is lower.
with those mods and a lower 60 foot i bet you will be at least mid 14s, most likely lower 14s. thats my guess..
i got my launching squared away and my 60 foot down a bit. and i ran 14.5's, its alittle quicker when the engine temp is lower.
with those mods and a lower 60 foot i bet you will be at least mid 14s, most likely lower 14s. thats my guess..
12-08-2002, 02:04 PM
#3
Member
Join Date: Mar 2002
Location: Clearwater, Florida
Posts: 252
Likes: 0
Received 0 Likes
on
0 Posts
I always thought a dyno was a type of machine that recorded your hp/tq ratios along with other information. I didn't know you could run the 1/4 on it?
Other wise, brake torqueing to 2500 seems a little too much to me. I start spinning around 2k. Don't know how you can get that high.
You said you have a stock 350. 15.1 at 90 mph. What year is your car? I think your times a little slow and your mph is definatly low. Have you had a full tune up lately?
Other wise, brake torqueing to 2500 seems a little too much to me. I start spinning around 2k. Don't know how you can get that high.
You said you have a stock 350. 15.1 at 90 mph. What year is your car? I think your times a little slow and your mph is definatly low. Have you had a full tune up lately?
12-08-2002, 02:16 PM
#4
Supreme Member
Thread Starter
Join Date: Jan 2002
Location: Hampton, VA
Posts: 1,449
Likes: 0
Received 0 Likes
on
0 Posts
yea it was $25 for the 1/4 times and $50 for both 1/4 and HP
Ive got a 88 IROC that had a 305 TPI in it that was replaced with a Reman 350 about 4 months ago. installed buy the dealer.
so I beleve that all plugs and wires were replaced, I do have a new fuel filter (less than 8 months old) stock air filters is if not clean then in decent shape. new engine has less than 3K miles tranny has 35,000 miles on it.
biker
Ive got a 88 IROC that had a 305 TPI in it that was replaced with a Reman 350 about 4 months ago. installed buy the dealer.
so I beleve that all plugs and wires were replaced, I do have a new fuel filter (less than 8 months old) stock air filters is if not clean then in decent shape. new engine has less than 3K miles tranny has 35,000 miles on it.
biker
12-08-2002, 02:20 PM
#5
Supreme Member
Thread Starter
Join Date: Jan 2002
Location: Hampton, VA
Posts: 1,449
Likes: 0
Received 0 Likes
on
0 Posts
Originally posted by MdFormula350
i ran a 15.3 my first time with my car..
i got my launching squared away and my 60 foot down a bit. and i ran 14.5's, its alittle quicker when the engine temp is lower.
with those mods and a lower 60 foot i bet you will be at least mid 14s, most likely lower 14s. thats my guess..
i ran a 15.3 my first time with my car..
i got my launching squared away and my 60 foot down a bit. and i ran 14.5's, its alittle quicker when the engine temp is lower.
with those mods and a lower 60 foot i bet you will be at least mid 14s, most likely lower 14s. thats my guess..
If I could get my 60' down and with those mods I'd like low 14s
well it was my first time on a dyno so alittle slow was understandable, but when the guy said 15.1 I was like damm that was slow........
biker
12-08-2002, 05:42 PM
#6
Moderator
Join Date: Jul 1999
Location: 51°N 114°W, 3500'
Posts: 17,119
Likes: 0
Received 123 Likes
on
104 Posts
Car: 87 IROC L98
Engine: 588 Alcohol BBC
Transmission: Powerglide
Axle/Gears: Ford 9"/31 spline spool/4.86
I doubt a dyno will give an accurate ET since the car is stationary. Too many factors will affect the ET in a real pass. The dyno can't take into consideration weight transfer which could give better 60' times.
Track conditions can be good or bad. Weather can affect a pass. A head wind will slow you down and a tail wind will make you go faster. There's also the wind resistance going down the track.
Since dyno's record torque and HP is a calculated number from the torque then that's what the dyno will give you. ET/MPH is calculated on a power to weight ratio. Was your car weighed before the dyno run? 250 HP in a 3000 pound car is quicker than 250 HP in a 3800 pound car.
Use the dyno as an estimate only until you actually go down the track. If the dyno says you do 15.1 then race the dyno.
Track conditions can be good or bad. Weather can affect a pass. A head wind will slow you down and a tail wind will make you go faster. There's also the wind resistance going down the track.
Since dyno's record torque and HP is a calculated number from the torque then that's what the dyno will give you. ET/MPH is calculated on a power to weight ratio. Was your car weighed before the dyno run? 250 HP in a 3000 pound car is quicker than 250 HP in a 3800 pound car.
Use the dyno as an estimate only until you actually go down the track. If the dyno says you do 15.1 then race the dyno.
12-09-2002, 11:19 AM
#7
Supreme Member
Thread Starter
Join Date: Jan 2002
Location: Hampton, VA
Posts: 1,449
Likes: 0
Received 0 Likes
on
0 Posts
Originally posted by Stephen 87 IROC
Was your car weighed before the dyno run? 250 HP in a 3000 pound car is quicker than 250 HP in a 3800 pound car.
Use the dyno as an estimate only until you actually go down the track. If the dyno says you do 15.1 then race the dyno.
Was your car weighed before the dyno run? 250 HP in a 3000 pound car is quicker than 250 HP in a 3800 pound car.
Use the dyno as an estimate only until you actually go down the track. If the dyno says you do 15.1 then race the dyno.
I put down 3,600 lbs, seemed about right.
yea I should have all my go go fast parts on before the 4th where I'll try again.
thanks for the info
biker
Trending Topics
12-09-2002, 07:31 PM
#8
Supreme Member
Join Date: Mar 2002
Location: Central CA
Posts: 1,805
Likes: 0
Received 1 Like
on
1 Post
Car: 89 Black GTA
Engine: 5.7 TPI
Transmission: 700R4
Originally posted by jd13
I always thought a dyno was a type of machine that recorded your hp/tq ratios along with other information. I didn't know you could run the 1/4 on it?
Other wise, brake torqueing to 2500 seems a little too much to me. I start spinning around 2k. Don't know how you can get that high.
You said you have a stock 350. 15.1 at 90 mph. What year is your car? I think your times a little slow and your mph is definatly low. Have you had a full tune up lately?
I always thought a dyno was a type of machine that recorded your hp/tq ratios along with other information. I didn't know you could run the 1/4 on it?
Other wise, brake torqueing to 2500 seems a little too much to me. I start spinning around 2k. Don't know how you can get that high.
You said you have a stock 350. 15.1 at 90 mph. What year is your car? I think your times a little slow and your mph is definatly low. Have you had a full tune up lately?
Brian
12-14-2002, 04:49 PM
#9
Senior Member
Join Date: Jul 2002
Location: Detroit, MI
Posts: 511
Likes: 0
Received 0 Likes
on
0 Posts
Car: 1987 Trans Am GTA
Engine: 5.7L 350 V8 TPI
Transmission: Automatic 700R4
Axle/Gears: 3.27
Those times seem about right. I just ran mine couple months ago and i got 14.9s. So i say u did pretty well for stock. Also it was cold when i ran my car, id say in the 40s. So that helped i think a bit, the wind i think was against us, not sure.
Thread
Thread Starter
Forum
Replies
Last Post
