3rd Gen / L98 Engine Tech 1982 - 1992 Engine Related

1/4 Times on my 305l69 H.O motor in Bradenton florida?

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Old Jan 27, 2005 | 06:37 PM
  #1  
dochtermiatasbrother's Avatar
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From: bradenton florida U.S.A.
1/4 Times on my 305l69 H.O motor in Bradenton florida?

i need people's best guess, cause im going to run her real soon,like next thur soon.....

mods R /// Rebuilt Motor/Trans/
Del.Power steering/ del..A/c
Absolutely Nothing in Engine Bay but what is needed to run Car...
No Converter
New plugs/wires/cap/rotor
Trans Cooler
Dual Snorkel AIr cleaner/wich i wana sell
Ok please gimme your best guess's
\
Im thinkin 14.9-15.5
Old Jan 27, 2005 | 06:39 PM
  #2  
dochtermiatasbrother's Avatar
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From: bradenton florida U.S.A.
Re: 1/4 Times on my 305l69 H.O motor in Bradenton florida?

O and ive heard Lowering the tire PSI at the track will help out...?? is this 2rue?
Old Jan 27, 2005 | 07:10 PM
  #3  
mako350Z28's Avatar
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From: Roanoke,Virginia
Re: 1/4 Times on my 305l69 H.O motor in Bradenton florida?

I'm thinking closer to 16 sec.

Lower tire pressures will work with drag or street slicks, but not with normal street tires because the sidewalls are too stiff.

EDIT: Also, the rubber they use for slicks is different than that of street tires.

Last edited by mako350Z28; Jan 27, 2005 at 07:25 PM.
Old Jan 27, 2005 | 07:20 PM
  #4  
dochtermiatasbrother's Avatar
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From: bradenton florida U.S.A.
Re: 1/4 Times on my 305l69 H.O motor in Bradenton florida?

ouch/ anything better than a 15.9 ill be happy with
Old Jan 28, 2005 | 12:02 AM
  #5  
kandied91z's Avatar
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Re: 1/4 Times on my 305l69 H.O motor in Bradenton florida?

15.899
Old Jan 28, 2005 | 01:57 AM
  #6  
JSkeet's Avatar
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From: Burlington, KY
Re: 1/4 Times on my 305l69 H.O motor in Bradenton florida?

im gonna say 15.3-15.7 only because i ran my factory '84 LG4 (150 hp 240 tq) car w/ nothing but flowmaster catback and ran 16.1@83.6mph. this run was done nov. 2003 in perfect track/weather conditions. i even did a burnout w/ the 2.73 open diff... lol... anyway, i had owned the car almost 2 years myself and never replaced ANYTHING but oil.... could've been running on 7 cyl. who knows?!!... go for it man!!

if you can plumb some raim air for that dual snorkel i'd do it... check out a local HVAC center for some tubing... or to get ideas www.ramairbox.com
Old Jan 28, 2005 | 08:32 AM
  #7  
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Re: 1/4 Times on my 305l69 H.O motor in Bradenton florida?

Well the L69 pushed the monte carloSS down the strip at a 15.7 so im guessing a 15.5-15.7
Old Jan 28, 2005 | 10:58 AM
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Red25thRS's Avatar
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Re: 1/4 Times on my 305l69 H.O motor in Bradenton florida?

you should be able to get mid to low 15's.....i got a 92 rs 305 tbi auto....all i got done is full exhaust...open element air cleaner...junk jet stage 2 chip....throttle body spacer...and 3.73 gears and i hit 14.8....and that was with my timing retarded 12 degrees cuz my friend messed it up....so thats not to bad for a lo3 305
Old Jan 28, 2005 | 06:23 PM
  #9  
dochtermiatasbrother's Avatar
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From: bradenton florida U.S.A.
Re: 1/4 Times on my 305l69 H.O motor in Bradenton florida?

Id like 2 break 14's then i would sh$t my pants.......
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