Ok, seeing I have new 305 in my camaro and next summer I was gonna get a valve job done to the camaro heads and put them back on (it is K blazer enngine ni there now, 8miles on it) and a cam, maybe the compcams fuel injection cam, port the stock intake as far as i can go with SLP runners and a AFPR etc etc. The car already has a 3" cat-back and a airfoil(no big deal). I want to be able to hand with a LT1 on the street is there anyway i can get this out of the 305? Note may car is lowered and had large sways so i don't have the best launch traction but i don't plan on lauching at a street light as if it was a christmas tree
-Tom


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1987 Black 305 TPI 5spd IROC, seems to be fully loaded, but can't find RPO codes.

AIM: IROC 5spd

 

To hang with an LT1 you either need some kind of forced induction or a great head/cam/header/torque convertor.

 

The only way, like the last post said, Forced induction or lots of laughing gas.
My 92 Z28 convt 305TPI 5spd put 231 rwhp on the dyno. Thats quite a bit less than the 275 to 285 the stock LT1 puts out.

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Rob P
89RSconvtZZ4TPI Edelbrock Intake
SLP Dual Cold Air Intake 1 5/8" Headers Semi-Siamesed Runners, IROC
suspension, alum shaft. Numerous mods.
92Z28convt5spd (stock)
71Impala convt 402BB
BETTER DRIVING THRU SUPERIOR HORSEPOWER!

 

Don't listen to the naysayers. With a decent cam and a nice intake set-up and headers you should easily be able to get into the high 13s, even with stock heads. That's a good start to go from. With heads and a blower too i think ***** is running near 12 flat. He might even have a stock intake...

Or are you gonna take advice from the guy who said to get a torque converter

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Ed Maher - Moderator @ The TPI & Carb Boards
92 Z28 Convertible - Quasar blue / Tan top
305 TPI A4 2.73 - 14.8 @ 93.1
Stock except ported plenum and dual cats
-=ICON Motorsports=-

- Definitely prototypes, high powered mutants of some kind. Too weird to live, too cool to die

 

LOL

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Check out MyGTA Nicknamed:The Big Red Machine
***AOL IM ClarkeMustGoNow***
Moderator at www.transamgta.com
"What does not kill us only makes us stronger"

Tony

 

I know of at least two people who have 305 G92 cars and ALL the bolt ons..Both are running 13.8 @99. Bolt on's! My goal is to run 13's with bolt on's..I don't think It's going to happen because I am getting 17 degrees of false knock retard.

------------------

• Red '88 IROC 305 TPI T-5 w/3.08
• Accel 300+ Ignition
• Accel 300+ Pro Sleeve Plug Wires
• AC Delco Rapid Fire Plugs
• Dual Friction Stage III Centerforce Clutch
• Energy Suspension Transmission Mount
• Flowmaster Force II 3 Chamber Cat Back Exhaust
• Gutted Airboxes
• Hypertech Stage II PROM
• Hypertech Airfoil
• Throttle Body Coolant Bypass
• Best Maryland (40 degrees) E/T 14.686, 60' 2.205, 1/8th mile 9.461, 1/4 mile MPH 93.91
• Best Florida (80 degrees) E/T 14.88, 60' 2.163, 1/8th mile 9.540, 1/4 mile MPH 92.74
• Best 60' 2.163(Florida)
• TPiS AFPR set to 42psi using Accel Fuel Pressure Gauge (Installed after Maryland run)
• Aluminum Driveshaft (Installed after Maryland run)

I am looking for a 3.42 - 3.55 posi disc rear. cheesy@fred.net is my e-mail, send a letter if you can help!

 

I know that I should know this, but when talking about bolt ons, are you including the heads? Or are they stock?

Thanks,
Jesse

 

What makes you think they are false? If it is based on readings from a scan tool, then there is a good possibility that it is very real, but your eprom's Attack Rate is too high and your Recovery Rate is too slow.

This is what I found when I started to investigate my knock readings. Basically, my ECM was trying to give me around 30* of Spark Advance but yanking 6-10* of spark advance back.

So, I decided to disable my Knock Sensor (via the eprom) and found that when I tried to pull 30* of Spark Advance I would get audible ping. Especially on an upshift. Lots of other guys have noticed this too.

Basically, the knock sensor hears what we don't and we hear what it doesn't. When the Knock Sensor is pulling out timing, it retards enough that we never hear audible ping. But the Knock Sensor can.

But if after the ECM retards the spark as far as it can, and it still encounters knock...now you will hear it. What's worst, the knock sensor almost seems to go deaf and ceases to function.

The worst thing I've noticed, if the knock sensor was pulling 12* out when it went deaf due to audible ping, the ecm will give you the 12* back and now further compound the problem by giving all the spark advance you the ecm was trying to request.

 

yeah, i just wanna make sure i keep up with if not pass one on teh street, my car take abashing here in my area, lots of rich ppl that see my camaro as "the old box kind", I wanna show them up on the street, seeing I have TPI i am a torque mosntor and most of the 4th gens around here are auto so i have a advantage already, see where i am coming from and my goal? Where the the LT1 produce their peak hp and torque numbers and how much and how broad of a range is it?

 

Stock LT1's dyno at 240-260 horsepower. They are rated at 275-305 depending on year and options.


------------------
1991 Camaro Z28
5.7L 5-Speed (originally 305)
317 RWHP, 418 RWTQ
13.23 @ 107.62 MPH
Southern California
Member: SoCal 3rd Gen F-Bodies
Member: SoCal F-Bodies
-=ICON Motorsports=-

 

a while back on horsepower tv, they ran a 94 LT1 camaro on the dyno...231 rwhp. but i'm sure the 96/97 are a bit stronger.

 

Yes, but that is almost as much HP as the SD 305s are rated at the crank. And we won't get into the "torque" aspect.

Camaro, you won't be able to do it with "simple bolt-ons". Power-adder or heads/cam/intake mods are going to be necessary if you want to "hang in there" or even beat one.

 

You dont need a power adder, that would work the best but you can do it with out. I work at Byron Dragway Week after week I see stock note I said stock LT1's running 13.8's to 14.4's thats all. With a G92 cam, good set of gears which are stock and after market exhaust headers back. I think you'll be suprised at howq well you hang with them. I'll say one thing though if you get above 100 mph your done hope you are far enough a head from the start.

 

ok, I was thinking
1) Heddman 1 5/8 headers with y pipe to attach to my 3" cat-back
2) Port and Polish the Stock camaro 305 heads
3) CompCams Fuel Injection Cam, seeing my G92 cam was destroyed in the old engine
4) Max Ported Stock Intake, maybe some SLP runners
5) AFPR
6) My Ram AIr Kit, and free mods ( Air foil should be consedered this b/c it does nothing!)
7) Don't need a TC b/c I have a 5 speed

What do you think, can I hang with an Lt1 on the street?

 

Ok you dont need to much to stay with an LT1. They are fast, but they arn't *** good as the LS1's and i have a 91 z28 with a 305 and i can keep up with if not beat any 4th gen around my area. The othere day i kicked some kids *** in a 1970 chevelle with a 350 rated at 350 horses...i got a 305 and i didnt do much to it. ALl i have is headman headers, 3 inch flowmaster exhaust, a hypertech chip, an airfoil, some other little engine stuff and 3.73 gears. Its all about the gears. If your get the gears and the right cam u can beat anyone. My friend has an 85 mustang gt(****BOX!LOL) that he did all up, redid the whole engine tranny and rear end. He suposedly has like 400hp(bs) and i can definatly kill him to. Dont underestimate the 305 its not that bad. Get gears and it will make a large difference.

 

Just be wary of the modded LT1's.
I sold my brother a 96 T/A that had pretty much every engine bolt-on and suspension upgrade.
His was a 6 speed with 3.73 gears and that thing pulled very hard. With the 4.10 gears he was able to put a car length on a 2001 LS1 Camaro.
I am going to attempt to make my little 305 TPI T/A faster than his without any power adders.
I just ordered a cam, msd 6a, blaster 3 coil, lakewood LCA's and adjustable panhard bar. Car has 52mm throttle body, dynomax headers, and a 3" Pacesetter catback.

I have stock 87 heads that I might get ported if my car doesnt' have the power I want after I get it back together.
We'll see in about 2 weeks.
BTW, he now has stck rear end from a 95 formula with 3.42 gears in his car, he keeps breaking the gears, 3 sets in 4 months.



[This message has been edited by Zepher (edited October 01, 2001).]

 

I have a 350 but it is said a 305 with the G92 package is close to the same. I have 2 friends One with a 97 Z28 6 speed he is a GOOD driver with exhuast,alum driveshaft,TB by pass and a cold air kit He will smoke any light moded and a few mild ones. I PULL him up high and problably have a good 2 1/2 cars by 100.
My other friend has a 2000 SS auto B&B exhuast,whisper lid,and a mass air flow sensor. On a Good launch I will jump him by 1 1/2 cars. by 60 he is slowly pulling and by 100 I am at his Door. Everything I have done is listed in my signature.Except Light porting to the Egr walls in the plenum and I smoothed out the first 3 inches on both sides of the base. (i didnt have the tools to get way in there. some TPI's will rock.

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91 Z28 5.7l Camaro
T-56,McLeod Street Clutch, Cross Drilled Brakes, KYB's,AFPR, 3.73 Gears, Borla Adjustable Cat Back, Hypertech Chip, Hooker Headers.
more to come....
My 91 Z28

[This message has been edited by Chris Etemadi (edited October 01, 2001).]

 

i will put it to u this way with 2.73 gears and the mods i have a damn LT1 has to catch me........ i leave the line so ****in hard i get them by almost 2 cars..... then in the top of 2nd gear and starting 3rd they catch me... but agian i have 2.73 gears for now.

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305, TPI,compucam 2030 cam, air foil, 8.8 wires, accel super coil, dynomax headers, custom y-pipe, cut out, 80 series flowmaster, 2.73's and an open diff(3.42-3.73 on the way). and a stage 4 chip :0). hittin a sad 15.2 before the chip.

 

-3.73's
-heads
-cam
-TQ converter to match
-good tires
-good suspension
-aftermarket runners and bigger TB

Do all that and sure u can keep up.

------------------
1989 Chevrolet Camaro IROC-Z
L98 - 350c.i. TPI, rebuilt 700R4 auto w/shift kit, Dual catalyst Monza PaceSetter Cat-Back, SLP 1 5/8 Coated Headers, 3.23 Posi rear, Hypertech chip with 160stat, MSD 6A, Under-Drive pulleys, AFPR, K&N's, !Air Box w/ Ram Air, moddified MAF, !TB Coolant, Spohn Dual Cat SubFrame Connectors, Alarm, Keyless entry, remote starter, 92 Z28 AeroWing, Brand New Paint (6/21/01)

Future: ZZ4 TPI w/EGR, T56, 3.42 or 3.73, Spohn strut tower brace and LCA's, Accell 24# injectors

1989 Chevrolet Celebrity Eurosport <--DEAD AS OF 9/20/01
2.8 MPFI, no mods
225,000 miles and still ticking!

More info and pics on my webpage:http://go.to/iroc-z

AOL IMer: GPA 0point0

 

The reason I think It is false is because it's valvetrain noise that's causing it. It doesn't make noise till the oil thins out and the psi goes down. I have run 106 octane booster and the car only goes slower. I aggre with the PROM being miscalibrated on for the attack and recovery rate though. I am considering running at the track with a resistor in place of the knock sensor. Thanks for the reply



------------------

• Red '88 IROC 305 TPI T-5 w/3.08
• Accel 300+ Ignition
• Accel 300+ Pro Sleeve Plug Wires
• AC Delco Rapid Fire Plugs
• Dual Friction Stage III Centerforce Clutch
• Energy Suspension Transmission Mount
• Flowmaster Force II 3 Chamber Cat Back Exhaust
• Gutted Airboxes
• Hypertech Stage II PROM
• Hypertech Airfoil
• Throttle Body Coolant Bypass
• Best Maryland (40 degrees) E/T 14.686, 60' 2.205, 1/8th mile 9.461, 1/4 mile MPH 93.91
• Best Florida (80 degrees) E/T 14.88, 60' 2.163, 1/8th mile 9.540, 1/4 mile MPH 92.74
• Best 60' 2.163(Florida)
• TPiS AFPR set to 42psi using Accel Fuel Pressure Gauge (Installed after Maryland run)
• Aluminum Driveshaft (Installed after Maryland run)

I am looking for a 3.42 - 3.55 posi disc rear. cheesy@fred.net is my e-mail, send a letter if you can help!

 

If you go to f-body.org their timeslip page shows a whole lot of LT1's running between 98-102mph stock or with minor bolt ons. So there you go, get your car to 101 or 102 mph and there should be no problem beating most LT1's in a 305.

 

Yeah, like i said before, i have 3.42 gears and a T-5, so not TC for me.