I know this sort of thing has been posted before about a zillion times but its basically impossible to search for

The reason I'd like to know what people are running is because I am running what I consider pretty respectable times with a basic 305 build see https://www.thirdgen.org/techbb2/sho...hreadid=208669

I dont hear of too many N/A 305s running in the neighborhood of what I run but I know they exist, so POST YOUR ET's and combos

im not talking about theoretical ETs or desktop dynos, and if you arent running atleast low 14s dont post about your 16.1 LG4 (no offense to anyone like that, i was there once too)
Just wanna know how my combo stacks up to yours

 

Here's a timeslip for my LG4 from last year...

I wasn't able to run the Camaro this year after being broadsided by an old bat this spring Hoping to get to the track with the same engine in the Formula next year.

Pete

 

The 14.20 time in the sig is a near stock 305 L69.

If you can get your car to hook you will almost be in the 12's. I
have never see a NA 305 on this board with such a high trap
speed! Amazing...

 

last year i went 10.19 @ aroune 70mph in the 1/8, spinning the whole way down. put on a good smoke show....never did get traction....ended up blowing the tranny. then i made a few runs with only 1st and 2nd gear.....lol.

i can't wait to take the new na 305 out this spring.

 

I don't know if you want to hear about my times..they aren't "low 14's" but are mid.

I have convert my times for the altitude. But in New Mexico at 3600 feet I ran a best of 15.4 @ 89.7 It was also very very hot and windy(headwind). I did the NHRA conversion and got a 14.7 @ 94. I've done a couple little things and will be putting headers on in the next couple weeks. That should put me in the low 14's.

Let me know if you want more info. I haven't done THAT much to my LB9.

*edit* I'm running the cam that came with my car, but the 85 cam is not the peanut cam. At the time I got my times, I had 19# SVO injectors, airfoil, K&N's, gutted airbox, Ed Wright chip, 160* thermostat, MAF screes pulled out, hooker muffler, and an AFPR, poly-tranny mount, wonderbar, and Jamex STB, MSD 6A, Accel Super coil and 8.8 spark plug wires. I was also running $50 Phantom HRX tires from Discount Tire. THAT's IT!

Since, I have ported(and polished) my plenum, put on a cold-air, put in a new tranny(twice) with shift kit, BMR LCA's, poly-torque arm bushing, AC delete (including box), tranny cooler, and will be doing the headers soon, !smog will be at the same time too. I think that's all.....

Here are two runs from back in spring 2002:

RT: 1.169 (terrible)
60': 2.311
1/8 ET: 9.978
1/8 MPH: 70.83
1/4 ET: 15.462 (14.7847 converted)
1/4 MPH: 89.698 (93.868 converted)

RT: 1.125
60': 2.263
1/8 ET: 9.921
1/8 MPH: 70.719
1/4 ET: 15.436 (14.7599 converted)
1/4 MPH: 89.022 (93.161 converted)

remember that this was at 3600 feet on a hot day (New Mexico, probably 90's) as well as a strong headwind.

Possible future plans are to port/polish/rebuild the heads and throw in a comp cams XE 256 cam.

I now live in Colorado and will probably get my next run at 5800 feet. *end edit*

Let me know if you have any questions.

-Jesse

 

Best time in sig Hot humid day and too lean on the secondary side of the carb. Changed jets a few weeks ago and it was a big improvement but never got back to the track for new times.

 

thanks for the numbers guys, keep em coming

cartman, your combo is essentially the same as mine. Keep tuning you should be turning MUCH better times than that

What sort of cams are you guys running?

Thanks for the kind words 84305ho,
I think the key to my combo is a thousand details that dont amount to much on their own but the cumulative effect is apparent.
That, and tuning... the wide band setup is worth its weight in gold as is knowing what to change and why carb wise.

 

Yeah I was hoping to break into the 14's but it didn't happen that day. Traction issues and tuning played a roll. (as well as the stinking 8.6:1 compression lol) I'm sure it would be in the 14's if I were to go to the track again. I'll never know what the 305 was capable of now though, it's out of the car on a stand getting picked up today buy the guy who bought it.

 

8.6795 @ 81+ MPH in 1/8 mile

 

So far my 305 has only done a best of 11.855 @ 111.80 mph. Looking into why it won't 60' like it should but still 745 under the 12.60 index I run against. This is stock intake, stock heads with only a 3 angle valve job, stock size q-jet (not the larger truck one), stock crank, etc etc. We have already started on another 305 for next season that will hopefully run in the 50's, not that I'd complain if it went faster LOL. I ran this time in I/SA at 3280 lbs, a bit heavier than min for this class/combo but it's always best to be heavy so your runs don't get tossed due to coming up light at the scales.

 

I just have a small .420" lift in/ex in mine; no other specs as it was pulled from the 400 that was in a motor home (a true RV cam )
1984 vintage LG4 - the low compression one - had about 225,000 miles on it. Heads have never been removed. Stock non-CC Q-jet (I'm in Canada) and T5 with a 3.42 open rear. The run on the timeslip I posted is the only run with a sub-2.3x 60-ft time.

Pete

 

n/m

 

my then box stock G92 LB9 ran a 14.8 with a 2.2 60 ft....
after 6 runs i was cutting hi 1.9's...and running 14.4's...

i installed a K&N a flowmaster and ground down the EGR walls...

same 60 ft but it ran a best of 14.12@almost 97

 

wow thats insane, I know you guys dont like to give away all your secrets but can you divulge cam specs and such? Id like to know more about your combo

 

you're gonna get mine anyway.


16.0 @ 88MPH



typical L03 time.


i could give you the times for my old car with the cheapie 400, but then i would just make you feel bad.

 

14.243 @ 96.180 with a stock TBI and autocross suspention setup.

 

Other than stock class, most "race cars" won't have a 305. Most people who race their 305 also drive it regularly.

Personally, I need to maintain emissions-legality, and some daily-driver sanity. So, my times/speeds may not be too impressive compared to a race-primary setup (and admit it, stock-class cars are race-primary and not very street-sane), but considering the restraints of emissions and daily driven, I'm not embarrassed.

Taller gears and higher stall would improve 1320 performance dramatically and still maintain those requirements, I'm sure. But, they would also compromise economy. FI would improve economy and properly set up would maintain power, but at a cost that would buy a lot of gas.

Ain't no free lunch, eh?

 

12 years ago i had my 82 Z/28 CFI car running 13.6's at 103 mph. i did alot of tuning to the car. cammed it with a big lift cam, ported the heads and lower intake, bumped alot of timing in it, bumped the fuel pressure up, 3500 stall, 3.42 gears all richmond from axles in on 10 1/2" cheater slicks. can't remember all the details but she would scream shifted at 6500 rpm.

 

Well if I told how to get these cars to run as good as they do, and mine is essentially a midpacker right now, then I'd have to....well you know, LOL. It's as much to do with the whole package as it is the motor. With my bracket motor in it the best 60' this car has done is a 1.48. We dropped this motor in just before the Nat'l event at Epping a week before it, of course the bracket motor busted its crank just before this, and in spite of swapping in a looser converter the car simply won't leave now. I'm thinking it may have tweeked something in the tranny even though the crank broke in the water box. And no, it won't pull a 48 but it should've done about a 55 in the 60 time.

 

i heard about a 11 sec n/a 305 in epping but i never actually saw your car. All you really have is stock intake, stock heads with only a 3 angle valve job, stock size q-jet . what about susp. mods. You wanna help my tune my car when i go carb? im hoping to pull a high 12 w/ 150hp nitrous and the mods i have now

 

Actually there are many 305's that can and do run 11's in stock. And at the recently completed Dutch Classic at Maple Grove last month there were a pair of 305's that ran 10's.

 

where can i read about your racing class and its rules and such? Is it heads up?

id like to get into class racing one of these days myself

 

Class racing is very cool. It gives you several ways to compete. Some guys are only concerned with being number 1 qualifier and setting records. Others merely want to participate and thus only make their cars run just fast enough to be under their index. Most try to run as fast as they can afford yet still go fast and go as many rounds as they can.
We all qualify based off the index for each class. This is why you might see a slower actual et outqualify a faster et. As an example, say a guy in my class I/SA runs 1.25 under (11.35) and another in A/SA runs 1.20 under (10.10). Since I runs on a 12.60 index and A runs on 11.30, the I car outqualified him. During eliminations it is normally a dial in deal. However if two cars in the same class get paired up on the ladder, then the first guy across the stripe wins - no breakout in this instance.
Now if say you built your car fast enough to set a new national record and during the record run day (normally day one of qualifying at divisionals or open series events in NHRA, any event in IHRA) you set and back up a new record, you must then go directly to the barn to go thru tear down. This is where you will pull one head, you will take two valves out fom the same cylinder, you will give them your carb for inspection, they will thoroughly inspect your head and intake, they will check the lift of both intake and exhaust valves on the side that still has a head on it, they will check the piston number which must be stamped on top of piston, they will check bore and stroke, etc. Lot of work but on that day you are the big dog in your class and you will get mentioned in either National Dragster or Drag Review and receive a certificate from whichever sanctioning body you set the record at.
There are a whole slew of restrictions for things you are allowed to do to the car and the motor. This is where the challenge comes in and what distinguishes this from regular bracket racing. For brackets you just build a motor however it takes to run the et you want whereas in Stock you are restricted on what you can do yet you also don't want to be the duck in a heads up run, not fun to know the other guy has you covered by three tenths and merely has to see you leave before he launches.
Anyway, this is the quick guide to class racing. If you are really interested in running it my suggestion would be to walk thru the pits and talk to some of the guys who run it before you take the plunge.

 

yeap, Ive seen it happen myself at the ac delco nationals. Who knows, if you were there it might have been you.

 

see my sig with a total weight of 3770 lbs

 

Best time is now 8.3559 @ 83.03 MPH in 1/8th mile.

 

muggsyjack,
How did it run? I see you picked up, all the top end motor running issues gone now?

 

New slicks, carb tuning help from Chickenman. Car dropped 60' time and lauched much harder. There is still more improvement possible. Gonna try a few things tomorrow before brackets.

 

And I thought mine was fast for a stock 305

 

Improved further to 8.3445 @ 83.26 MPH tonight.