Figured I'd get a baseline before swapping in my L98 cam. I should've got a run w/o the air filter, but oh well. I'll try to post the graphs tomorrow. This was on a dynojet.

178 rwhp @ 3900-4800 rpm pretty damn flat with 160+ hp from 3200-5500 rpm (I wish the torque curve looked like this) and 271 rwtq @ 2800 rpm with 250+ tq from ~2000-3400 rpm. Air/fuel was in the 11:1 range most of the time(suprising, haven't check FP yet). This is all stock top end, stock/modified air filter housing w/ k&N, edelbrock headers, 3" cat, 3" hooker cat-back, and a streetmaster chip

I finally got my TBI chip adapter, so I'll start playing with that soon enough, but I'm thinking of staying with the stock 305 injectors instead of moving up to a set of 350 inj. that I have, any thoughts?

Oh yeah, LS1s are amazing my roommate's '02 T/A dynoed 329 rwhp and 342 rwtq with only a cat-back and air lid.

 

Your car has always amazed me. Those are excellent numbers.

Judging by the air/fuel right now, you probably won't need those 350 injectors just yet.

 

2 kinds of ways of going fast, either make it or find it. Finding extra hp can be as easy as reducing weight or going with a 5 speed instead of the slush box. Also the stock intake is fine if you've got the stock heads and stock cam. Those items were matched together but if you do some exhaust work it's probably a good idea to make a spacer to increase the plenum volume. Keeping the smaller TB and keeping high velocity in the small runner and heads intake ports are also not always the "wrong" way. I've always known the 5 speed L03's with full exhaust and an open element to be running pretty strong. Even stronger with an Lt1 cam and aftermarket intake with chip tuning.
You definatly need to do the lt1 cam swap and intake swap. Would be nice to see a stock long block getting into the 13's if you can cut that 60' into the sub 2.00 range.

 

thats awesome, the 11:1 is even more awesome you are looking at a substantial HP boost by leaning it out.
This is still more proof that these cars are rich from the factory. Too many people break open their regulator and just crank it up believing they are making the car faster.

 

Great numbers!

i had mine up on the dyno about a month ago, and didn't get good results , but did find out my cat was clogged i did manage 240 TQ before the clogged cat effected everything. but my peak tq was at 1800 RPM and since the torque started dropping from there, my HP never started to climb i also had a really weird 02 readout also, so now that i have some thing fixed, i need to get up there and run her again.

 

Those are great numbers. Shows I got a quite a bit to make up for and know what to expect from my next up and coming mods...

It'd be interesting to see what my 1.6 rockers and cut out gave me on the dyno... but headers and new y-pipe are coming i before the next dyno session I got in may...

I was running 258 ft/lb of torque @ 2400 rpm and 155 HP peak @4100 rpm prior to those mods on an auto with 2 1/2 inch tubing and stock manifolds, y/pipe...

 

what do you have done to your 305 tbi bird? im looking ot work on my car but i dont know what to get. what would you suggest?

 

"This is all stock top end, stock/modified air filter housing w/ k&N, edelbrock headers, 3" cat, 3" hooker cat-back, and a streetmaster chip" and 3.73 gears/posi.

I recommend all that except the chip, get a custom one made for you. The hypertech streetmaster has only the main spark table changed from stock and bumped the speed limiter from 108 to 115 mph, that's it. Possibly an open element air filter over stock. Thanks for the response guys. Dyno graphs are coming tomorrow (got busy today).

 

...working on posting pics.

 

Maybe this worked...

 

2nd dyno

 

those look very simalar to mine, but my TQ died faster, earlier. i will try to post mine when i get a chance.

 

"the 2nd quote is from a different post"

I plan on doing a 1989 L98 cam swap tomorrow in ~2 days= less than 12 hrs of work. So I plan on swaping the (1)stock intake/TBI back on at first. I also have in my garage a stock TBI, (2)350 inj, and (3/4(w/ stock inj))edelbrock preformer. I could also make a (5)TBI spacer for less than $5-10. I'll probably try these things out anyways since there isn't much research on 305 TBI cars, but some suggestions on intake mods 1-6a would be appreaciated. I also have a (6a)14x3" drop base paper filter to play with too.

 

Holy crap that thing dies off. I can't imagine how awful a dyno sheet of my 92 RS would have looked.

I guess those are good numbers...I'd plan on some heads or something though...

And those are nice numbers from your friend's LS1! Quite similar to mine. Strong cars, they are.

 

damn dude those numbers are awsome!! Hopefully when get my 3.42's in, i will be running around the same numbers.

 

I hope you don't think gears give your horsepower...

But I am guessing you just meant that you're dynoing the car after you put some gears in.