Results of a 350 TPI

 

my 305 stock makes more then that.

 

or am i reading that wrong?

 

6spd
That chart is for RWHP & RWTQ not your stock 305 fywheel numbers.

 

Still, at the flywheel, your only making about 260 to 275 horse. I think you should be making more than that. You may have to try some tuning....

 

I would say that you have a good start, but the engine needs more tuning. Is that chip you have installed designed for 22lb/hr injectors? What was you timing set at for the dyno runs? Do you know how much timing is in the chip you have? I would bet with a custom prom and a little porting work you could really get those number up.

No offense but camaro6spd wasnt that far out of line. RB83L69 has a L69 (305) that makes more RWHP with stock intake and carb. Like I said earlier I think you just need a little bit of tuning. You may want to try a stock 350 prom and see how it runs.

Peace

 

85transam
Run was made with a stock GM 88 350 Chip. With the FP set 41
PSI and 13.1 air/fuel ratio which was optimal. The Fastchip was just installed and the car run better. The timing & Idle is set to run on the street. And your remark about the 305 l69 making about the same RWHP, well TPI vs Carb enough said. I think 6sp read the chart incorrectly and thought his 305 TPI 5sp with 215 hp and 295
#ft/tq at the flywheel was the same vs my 271 HP & 362 @ft/tq

Remenber this is a daily driver with enough power to surpise people. I have not seen to many listing of STREET CARS or their
Dyno Results. Well I posted my results!

 

I'll be posting my results in the summer when I make it out to the dyno.... What kind of cam do you have in the engine? Is it a stock replacement L98?

 

Are you using a stock base for your intake? If so I think an aftermarket base would help those numbers a bunch. Also I don't think that is much lift on the cam. Good numbers though.

 

Jay & Blanchard
Cam & Intake base posted on my Profile. Not a stock L98.
Thanks for the replies.

 

What has happened is the cam you selected trades TQ for HP, but the TPI intake won't let you have the HP and you have less TQ than if you had selected a smaller cam.

Change the intake and I am willing to bet you won't loose too much TQ but your HP will keep climbing after 4,000 rpm (instead of looking like the horizon of Kansas). Your cam wants to go higher, but the TPI is choking it.

 

also remember that dyno #'s cant really be compaired against each other. all of them are different. oh and howdy all. i used to post a lot a wile back but havent been around in a wile

 

Well here we go again, YOU SHOULD HAVE done this or used this or another part and YOU WOULD make more Horsepower & Torque. Sorry fellows, the engine is already BUILT and running
great.

Now if anyone thinks they can improve on this set up, fine. Thats one way to learn. Now you can try it on your own, and spend your dollars on those SHOULD HAVE parts.

I agree that Dyno Numbers are not engraved in stone but are a useful tool. Also, I do not go the Drag Strip. Anymore coments.

 

thx for posting your dyno results... looks pretty good for a daily driver.

 

I found your problem. it is the SLP runners. throw them in the trash and put the stock runners on there. I lost so much power going to those runners. mater of fact your peaks seem to be at the same rpm's mine are now. I should have listened to the guys on this board and purchased other runners. to be honest your cam and your heads are not agressive enough to use those runners.

 

Seeing as how everyone knows just what the guy needs to do to build more HP, I think everyone who thinks he knows the perfect combo. should send the guy the parts you feel are best and let him put them on and dyno the thing and post those results.

Everyone agree?

 

long&low

Now that is a comment I can relate to. Too many SHOULD HAVE
done this, I did not ask for any should have parts only Posted my
Dyno Results of a Daily Driver not a Drag Queen.

 

Thx for the dyno. Makes it easier for me when I make my decisions next summer.

Also, I don't care too much about hp -- in my car it's torque that matters and your 360+ lbs torque is big block HUGE. Definitely a world class 0-60 car with that much torque on hand. Must be alot of fun to drive eh ?

RP.

 

For palric and others like him.
I would venture to guess that at least 85% of the menbers of this form just want a Camaro/Firebird that has the more power
over stock to drive and not be shown up by late model cars.

So you do not have to be the King of the strip, to brag about your
car. Remenber they spend about 13 seconds in their cars and we enjoy ours for hours.

So lets here some more comments, PRO or Con.

 

one of the 85%, don't post much but sure do appreciate, nuff said

 

Z28djp1987: Not to bad a run. I would have guessed higher based on my run several years ago (257rwhp, 311ftlbs), but our mods are slightly different. What kind of dyno was the run on, because that will make a difference? I would stay with th SLP runners, that's what I had at the time. Again, good deal...

 

RCR
Car was run on Dynojet dyno, also used 22% as my drivetrain loss.

 

Last year I drove my car over 13,000 miles. It makes 257hp and 356 tq. I know there are a lot more cars faster than me that are driven everyday. You got to get out more.

 

before I bought my Z (from my good friend) it dynoed a MAX 218.3 RWHP & 296.2 RWTQ on 2/2/01. That was with terrible plugs, wires, cap rotor,etc etc. The ONLY mods at the time were SLP runners, air foil, K&N @ TB, 3" SLP cat back w/ 3" cut-out and SLP prom.

Since I have added 1 3/4 SLP headers, bumped the fuel pressure, bumped the timing and TB coolant bypass and full tune up. So, yes, I think your numbers are very low.

 

chevyboy07
Well Iam glad your friend made those numbers, nice.

However; You are the proud new owner, now you can not go by those numbers, Sorry. Lets see you post a Dyno Chart and not some I did this and now I have??????.

 

umm, you make no sense. First, to let you know, the change in ownership doesn't change anything about the car's HP. Second, I did all the mods to the car...even when it was his. I treated it and took care of it just like it was my own. Third, I was there when it dynoed these numbers. I have the sheet with me right here. Now, since I bought it off of him I have added the headers, etc.....so what actually was your point? I don't get some of the clowns on this board.

 

Well, Z28DJP1987, I am glad to see that you are happy with your car. I mean when it all is said and done, you are the only one that needs to be satisfied with your car.

But I will second what Glenn said in that your setup is a bit mismatched..... That is not to say it doesn't perform at all, just that the cam and intake design are in a bit of a conflict with each other........ But I will add that an engine can and will often somewhat overcome a conflict of interest in its components like that...... A good example are some of us that run the LT4 Hot Cam with a LTR TPI setup...... The cam is really not designed for a LTR setup at all but still performs fairly well with it...... That is not to say that there is no more power to be found by replacing the LTR intake setup with an LT1/LT4/Miniram manifold.....

Anyways, nice work and check into burning your own PROM as there is definately some power sitting on the table in the PROM calibration.

Good Luck!!
Laterzzzzzzz