Ok TBI experts, what will this combo run?

L03
Open element K&N non-drop base
SLP 1 5/8" Headers and SLP Y-pipe
3" exhaust
No cat
Flowmaster 80 series
MSD-6AL
MSD Blaster GM coil
Accel Distributor
Edelbrock Performer TBI intake manifold
3.08 rear end
T-5 tranny
Nitto 275/50/R15 Drag Radials
LakeWood LCA's and Panhard

I'm guessing low 15's or high 14's, what would you say?

 

I'd think high 14's, if you can get some traction and you shift the T5 pretty quickly

------------------
82 Z28 350, Ported #882 Heads, Performer RPM cam and intake, hedman headers,650 Demon carb,
Trans: Turbo 350 w/ 4000 stall -- Rearend 7.5 w/ Richmond 4.10's, Auburn Minispool
Best ET: 12.52@107.2
Future plans: Dart headed, Roller cammed 383 in early '01


89 RS, L03 305, Hypertech Chip,cat delete, Dynomax exhaust,K&N open element Filter,160 stat, MSD coil --Trans:700R4 Corvette Servo -- Rearend: 7.5 GM 3.42 w/ posi-lock
New Best ET: 14.91 @92.9
Bassett Racing
Mid Atlantic F Body -82 Z28 Page

R.I.P. Dale Earnhardt #3

 

14.9 is my guess.

 

would that rear be a peg leg?
w/posi definate high 14's, prolly a mid or low .9xx,maybe a .8xx. if it's a peg leg i would expect closer to a 15.0xx or a high 14.9xx at best.

lata
tim

------------------
91 Camaro RS-LO3,Auto.
14.215@94.30 w/ 1.917 60'

Check Out The East Coast F-Body Nationals Home Page
www.geocities.com/njspeeder

My MAFB.ORG Home Page
www.mycar.net/mafb/registry/detail.cfm?id=299

DSI Racing Home Page

www.geocities.com/foff667

 

It's a posi. What would it take to get this turd into the low 14's?

 

Except for the ignition stuff, manifold,and rear suspention I have all the same mods and I am running 14.80's at 96. On a cold cold night I can get a 14.7x. That is with a posi rear and you have to find the right rpm to lanch. Try 3500 slip for about 2sec. and then dump it and punch it that gets me to 60 in 6sec. flat.

 

Come on Duke. You should know the that anwser to your own question!

------------------
Eric Natzke
91 Firebird 305 TBI
"It Ain't Stock"
http://members.aol.com/j007golden/91firebird.html
For info on certain parts or mods go to the site below
http://members.aol.com/j007golden/modeval.html

 

i have most of the mods you listed.
after 128k Mi, and my mods(in sig) i run low 15's in florida.

hTh
RS

------------------
1992 Camaro RS
Mods:
Custom chip, 14x3 Open element w/ K&N filter, MSD 6a, MSD GM blaster Coil ,MSD 8.5 SC wires, AFPR,Fuel Pressure gauge,A/F guage, 3-Row Al rad. , 180* t-stat,Proform 1.5 roller rockers, Hooker 1 5/8 headers, 3" Hooker Aero Chamber cat-back, "Ultimate TBI" mods, !Cat

Next

454 TB,Victor Vortec intake,Vac FPR,LT1 cam,Roller timing set,"glass" hood
65# inj,new chip

Best Time: 15.279@89.02MPH
Underdog Racing

[This message has been edited by UnderDogRS (edited February 22, 2001).]

 

Hot Rod Magazine ran a 14.27 @ 96.6 mph leaving at 1300 rpm with the following combo:

Dual snorkle air cleaner with K&N
180* thermostat
3.73 gears and posi
350 HO heads w/ 1.94/1.50 valves w/58 cc
2101 Edelbrock Q-jet manifold
Q-jet to TBI adapter plate
cam with .480 lift
454 throttle body
edelbrock tes headers
edelbrok IROC catback
corvette or IROC single cat
Traco prom

stock 170hp @ 4400 225 lbs-ft @ 2400
after 262hp @ 5000 306 lbs-ft @ 3600

BTW the engine made over 295 ft-lbs between 2880-4400 rpm and the hp peaked from 5000-55600 rpm.

They ran a 13.89 @ 97.21 mph with 26.00X8.00-15 slicks launching at 4000 rpm and that the car would probably run 14.0s with the slicks and factory 3.08 gears.

------------------
1988 Camaro
305 bored .030 over
Stock TBI
Aluminum radiator
No smog pump
gutted factor cleaner
cam ground to crane specs
timing advanced 9 degrees
no thermostat
other than that its bone stock and ran a 16.4 @ 82 mph with earth shattering wheel hop and a 2.88 60 ft time. (this was with the rebuild and cam only)

 

Easy Eric, I'm just trying to get opinions.

I miss my 3.73 rear end so bad, remember to check the fluid level often in your car's rear end, becuae no oil causes the pinion to "readjust" itself.

 

racer j, that is a pretty bad time considering the mods done. They basically replaced EVERYTHING except bottom end. Heads, cam, intake, full exhaust, posi 3.73 gears, 670cfm TB. I bet they used a really mild cam. Look at NJ Speedster's setup. He's using the stock cam and would be dead even with that f-body. I bet if they would have used slicks and a larger cam the car would be in the high 13's easily. What are the 350ho heads, are they vortec? If so then they must not have matched the intake to the heads correctly, something is wrong. I'm thinking they should have gone with 3.42 gears with the mild cam. If they had a cam with 6500 redline then I'm thinking the 3.73 would be great. Was the car standard or auto?

------------------
, Jon (91 RS too many mods to list)
Dale Earnhart, you have done so much, you will be missed.

 

probs with that combo
1. cam is too big, never EVER go past .460 lift in a 305, the valves get too close to the bore walls and air stops moving in, when you lose that air velocity you are no longer mixing up your air/fuel or getting a bigger charge in.
2. why run an adaptor manifold when the performer tbi fits right in place?? the q-jet adapter places the tb further back on the manifold and messes up the a/f distibution.
3. we don't know what the car weighed or what tranny it was running.
4. a dual snorkel gives less air than a 14x3 open element
5. was the prom off the shelf or a custom burn? they make both, and i am finding the stocker to be better to live with than my off the shelf hypertech thermo master.

i don't know what they did to this combo but as poorly matched as the parts are it should still have been faster than that. 262hp seems a little light to me, based on the math guestimate from my et and mph at the tracl my car has about 220-227 at the rear wheels, and i can't believe that much cam is worth that little power.

lata
tim

------------------
91 Camaro RS-LO3,Auto.
14.215@94.30 w/ 1.917 60'

Check Out The East Coast F-Body Nationals Home Page
www.geocities.com/njspeeder

My MAFB.ORG Home Page
www.mycar.net/mafb/registry/detail.cfm?id=299

DSI Racing Home Page

www.geocities.com/foff667

 

Come on guys breathe lol I never said they had a great combo. The heads were the 350 HO vette heads from the TPI days and this article was done back when that car was new so they were new to modding it too. They did run high 13s with slicks it was at the end of the post. You can't deny the fact that they did make some decent power from the mods. The torque is almost a straight lina across the board. The chip was a custom unit and the tranny was the stock T5. Don't forget car mags very rarely drive sticks good and they left out their 60 ft times. It could have been turning 2.88 60 fts or worse but theres no way to tell. BTW this article was written in 1989. They were trying to prove you could buy the 305 TBI and upgrade it with extra money you would have spent on an IROC and go faster. They provrd this seeing as how their 89 IROC 1LE with 305 tpi ran a 14.7 @ 93 mph and their 89 IROC with 350 tpi ran a 14.6 @ 98 mph. The TBI car ran a 14.27 @ 96.6 mph on street tires and a 13.89 @ 97.21 mph on 26X8-15" slicks

------------------
1988 Camaro
305 bored .030 over
Stock TBI
Aluminum radiator
No smog pump
gutted factor cleaner
cam ground to crane specs
timing advanced 9 degrees
no thermostat
other than that its bone stock and ran a 16.4 @ 82 mph with earth shattering wheel hop and a 2.88 60 ft time. (this was with the rebuild and cam only)

 

What all do you have done?

------------------
White '92 Firebird w/ 305 TBI. Open element w/ non drop base, increased fuel pressure, TBI spacer, Hedman Hedders & y-pipe, no cat, cat-back exhaust

 

I think Zac has all the same mods I do if I remember right. Zac?

------------------
Eric Natzke
91 Firebird 305 TBI
"It Ain't Stock"
http://members.aol.com/j007golden/91firebird.html
For info on certain parts or mods go to the site below
http://members.aol.com/j007golden/modeval.html

 

Yeah but now I have nitrous. It accutaly picked up a tenth after I ran nitrous through the engine. I also have a set of 3.73's sitting in my room waiting for a slp takeoff posi.

Zac Spalding

 

ive seen that hotrod article on microfilm from the actual 1989 issues
they used the stock throttle body, not the 454
also, im pretty sure they used a square bore edelbrock performer carb manifold
they also didnt mention the cam specs in the article. Traco engineering felt like keeping them secret. You can bet they were very mild though because back in 1989 eprom tuning was in its infancy and very little was known about making anything hairy work

Why didnt they use the performer TBI? Well, they dynothrashed this motor to get the combination they had, i believe the article mentioned something like two days straight of bolting on different parts etc
The performer TBI was substantially lacking in high rpm airflow they said, that it did provide nice power at low rpm, thats all it was designed for, trucks. They determined that it wouldnt be up to task for their combination

as for comparing njspeeders car to theirs, you all seem to forget hes running KILLER HEADS, no comparison!!

L98 Alum. heads port vol. 163/58
Intake CFM 186, exhaust 152

Edelbrock Performer RPM heads 170/50 intake cfm 219! ex 151

AFR 190s (for comparison since these are considered king of the hill in alum. heads next to the 195s) 190/64 236cfm int 163 ex.