MawneeC5

Not huge,but I am running Low LSA( ).

221/221 575/575 112

I get a nice bumpy idle to go with my procharger whistle

I actually went with a smaller pulley because I was told it would bleed boost....well it doesnt. I've seen over 9# with a 4.00 pulley on my P1SC.

Cajundude

I've been thinking 113.

Vince99FRC

How big of a cam are you talking about? I made the decision to sacrifice peak horsepower for a more streetable cam. I am running a 225/219 cam... She idles great and I thought it would peak early until Dr. Phil made a few changes via degree'ing the cam... The car is rock solid!!

Cajundude

No bigger than 112-113. I have a 228/232 on a 115 and the car is rock solid. I just want it for sound. I'm not looking for any performance gain out of it. I'll probably lose some if anything. I'd still whip your azzz though.

jkz06

Cajundude, what is your opinion of running the G5X3 on a 114 on a motor built for boost. I'm in the process of forging my motor for turbo's and I already have this cam and love the way it sounds, but have been told it's no good for boost. I know it's not ideal, but again I love the sound.

Cajundude

Well, I would not want to venture an opinion just like any tuner would not want to. The choice would be certainly up to you. You are right, the cam would not be recommended for boost applications, however, the are several here that are running cams bigger than the X3 without problems. Would the cam be ideal? Absolutely not. The cam I have in my car now is ideal. However, I am on the street more than the track and that is the reason I am looking towards the bigger cam. If I go from 800 to 750, big friggin' deal. If I lose low end grunt big deal, I have a shiny new kit in the garage that will take care of that. Like you, I want the sound and will sacrifice a little power for it if need be.

jkz06

Cmon, that's not what your supposed to say. Your supposed to say"it will work great, and the low end power will be out of this world." Oh well, looks like my search continues for a new cam.

ttboyvette

Is a cam change on a stock bottom LS1 going with a D1SC kit a tought or should I only worry about that if I go With a new forged motor in the future?
I too would like the sound of a better cam...I had a 70 buick G.S. 455 5-speed with 650hp in my previous car to the vette and I really miss that power thats why I am going FI, but I also REALY miss that LUMPY IDIOL!!! That car was wicked sounding!!!, but as of right now I am not going to SUPER SIZE and I am going to run the stock bottom and see how long it or I can take it before concidering going forged. I plan on mostly street driving. My car goes in for the install of the ECS D1SC with alki injection,new clutch,trans brace,hrdn output shaft,gauges,an FLP tune, and all the other gen stuff. Any suggestions I should do to make this set up as good as I can while still keeping in mind I will be maintianing a stock bottom? I would love to do a cam to get that lumpy idol along with the FI power or am I barking up the wrong tree???

Tom

Cajundude

That could come back and bite me in the butt if I make a statement like that. I'd much rather do it on my own car and then comment on my experience. I generally don't talk about things that I don't have first hand experience with. There is a lot of that on the forum but I'm not one of them.

ttboyvette - typically, I don't think it would be in the best interest of a tuner to put in a big cam since it is not "ideal" to get the numbers they are used to seeing. That may come back and bite them in the butt if someone sees a car not making as much power as it should. A big cam and FI is maybe something that people do themselves. Dunno. Most tuners will tell you not to do it I suspect. My car is a toy, I do the labor myself so the swap is no big deal to me. If for some reason it totally sucked I could always put my old cam back in. It's time consuming but what is fun is working on these cars, at least to me. I will report my finding whenever I do do it and I'll take it to the dyno to see what we lost if any. I think a bigger cam will lose some of the low end grunt but will make it up a little on top which probably wouldn't be ideal for street racing but I suspect that can be offset easily.

Vince99FRC

Why not a cutout? Just kidding.. That wont offer too much of a performance gain with your setup. Keep dreaming if you think you can beat my setup.. Rumor is a 4XXci STS car making 1000rwhp would have a hard time beating a 34X TTi X car making 800rwhp.. That is 6 speed to 6 speed. Does STS have recommendations for going faster down the track like they have recommendations for dynoing I cant wait to get back home. Maybe I can try to sneak away and come to Texas for the Supra Meet. We will see..

Cajundude

I am assuming you are talking about removing the tail lights. My car was not tuned that way. It was tuned just like I drive it on the street with everything in place.

stevieturbo

Impressive stuff....but until you go back to back with a milder cam and see its results, you cant say that your ET, and trap is all down to cam choice.
I think its more down to a big engine, and a couple of T76's in your sig !!!!

In fact, as Im sure you well know, ET is massively dependant on traction, and little to do with camshaft. traps are indicative of power....but again, how much of this can you put down to camshaft alone ???

I would hazzard a guess, you could fit a milder cam, that would idle pretty smooth, and still manage the same ET's and speeds.

I was reccomended something like a 232/240 circa 0.600 on 114 to achieve my 140mph+ trap goals by a well regarded cam grinder.
Knowing in my own head that this wouldnt idle the way I wanted, and that big cams simply arent necessary in blown applications, I opted for a much milder cam, and so far have far exceeded my initial goals. In fact, early next year I hope to exceed my goals by 10mph, and hit 150+, and with only a 224/230 on 115 cam on pump fuel with a little meth.
If I get enough track time though, I'll be trying pump fuel only for a while.

0EG@EnglandGreen

Jason, get a Thunder Racing T-Rex clone on a 114LSA like mine and call it a day. No need to follow the sheep

The lope, shake and evil idle will outweigh any performance loss (IMHO). Plus you have giggly for any low end loss and the top end will be

Got my pistons and rods in house, and my trip to PRI gave me even more radical ideas - starting my "Madness Motor" build in the next week or two

Cajundude

Wish I was there to see/help with the build. I may clone your cam, just drop the LSA down a notch.

0EG@EnglandGreen

Regarding "big" cams and forced induction : the folks at LS1tech will give you a totally different opinion if you asked the same question over there.

My old cam was 234/240 598/608 114LSA. It pulled like a freight train - way too much fun from 2500rpm on up.
My current cam is 242/248 610/615 114LSA

Remember, that is only a medium sized cam on a 402ci engine.
I'm seriously contemplating getting a much bigger cam now

stevieturbo

And they guys down under will be very different again.....

Thats why I ignored everyone, and selected my own cam. And I guess it worked ok...Smallish cam, mild heads and a simple/cheap 382.

Pretty smooth idle, and consistently trapping 148-149mph. Better than I had ever hoped.

I hate cams that dont idle nicely.

Im not knocking anyone for trying big cams. In fact, I'd love to see some serious back to back testing, with all other things remaining the same. As yet....that doesnt seem to happen anywhere.

0EG@EnglandGreen

Again - Apples and Oranges comparison. Cajundude is looking for a lumpy, radical idle - the power is secondary. He puts down 800rwhp with his current cam - and he doesn't care if he loses some power.

It's not about comparisons of what is best for what application.... it's about thinking outside the box...

Your criteria is smooth idle and high trap speed. Cajundude doesn't want a smooth idle..... neither do I....

Vince99FRC

I am with Stevie.. I want a smooth idle and high trap speed. My days of a lopey cam are over. I dont want everyone looking over at me when I pull up at a light anymore. I want the stealth sound. Now if I build another FRC I will go with lope because it will be NA.. Thats down the road though. I just love the look of the FRC.

Cajundude

I do have a filling and I want it to shake on out. I want my wife's tigglebitties to bouce at stop lights. I'm not worried about 50 hp. I know the car is fast.

MawneeC5

LMAO