Today my 1992 RS TBI was dyno tuned and with all my mods I got 158.5rwhp or 118.2rwkw LMAO. It was over fueling and running like crap but now its running mint so they tell me. I will pick it up tomorrow and give it a good blast and see.

 

Ouch considering all the mods you have. I've seen other people post nearly the same numbers on an LO3 stock with headers & full 3" exhaust.

 

Yea, someting is not working right. Another proof that cutting off the cat is not the best way to start modding.

 

You may want to think about investing in the EBL setup so that you can get the most from those mods. Cat delete or not it should be running better than that with a decent tune. Was that 158RWHP before or after they tuned it?

 

I just think it has the worst cam,worst heaedrs,worst exhaust and stock L98 heads with no milling done. I am surprised it made that much. It was 138rwhp before the Dyno tune. I would like more but I dont want to spend any more cash on it.

 

Something does not seem right with your setup. Are you sure the shop knew what they were doing?

 

How much Torque did it put down? Do you know what head gasket / how much compression you are running?

It could be worse, you could have the stock L03 cam.

 

Well what power should I be making with this set up? Dont know what headgasket or compression sorry.

 

The L98 aluminum heads should have 58cc chambers. If the engine has the typical replacement gaskets they should be around .038". The compression cant be any worse than 8.5 to 8.75.

 

the cat delete can only help...
but either you're lying, or they played a joke on you.

 

a camshaft with more duration will rev higher and make more horsepower with that torque


some things change the power band of the engine up or down and some will increase hp and torque or its output

 

I put down 181 RWHP with that cam and stock swirl ports on a 310 CID 305.

 

If the heads were milled do you think it would have been beter? I really wish it made more hp/tq

 

Maybe a little bit better, but not too much. I would seriously question the tune. Personally I would invest in an ALDL cable and do some logging myself to see what is really going on.

Hey Fast: That 181 RWHP must be with headers correct?

 

did you upgrade the injectors? do you have an adjustable fuel pressure regulator?

 

The heads are 58cc just like the old ones. The only place you make have picked up chamber volume is with the head gasket.

 

Well I guess the heads aint the problem then and 92 Camaro yes I changed the injectors to 350 ones and I do have a AFR the guys who are doing the Dyno Tune said the Air Fuel mixtures are right but I did stomp the pedal down on the way home and I had a couple of backfires and It stalled and died one time when I jumped on the gas as I was doing about 40. So its back at the shop getting it redone the tuner said the tune might be a bit to lean. BlueRS91 TQ was about 520nm's on the sheet. Guys with my Mods what roughly should I be getting? About 175rwhp perhaps?

 

That is interesting because it translates to this 520nm = 383ftlbs. That must be FWTQ which is really good for a 305.

To give you an idea where you should be I put your specs into DD2000 with 9:1 compression, Alum L98, same cam specs, 400cfm with Dual Plane intake, shorty headers w/mufflers. It comes up with 260HP@5000 & 332TQ@2000. I would guess that you should be able to make around 230FWHP with your combo being conservative which should put you closer to 200WHP.

 

Nope...Stock tubular manifolds and factory true dual exhaust....It was in a G-Van.

 

how many miles on the engine?