lsx4thewin

Been thinking about this winter going FI. I recently put together a 6.0 bored .030 over no forged internals. BTR stage 4 cam- 235/242 .621"/.592" 111+3
Is this cam too "big" for a turbo? I love the sound of it. Its definitely nasty.
I was told that procharger would be better to go with that size cam but I wanted some opinions!

HCI2000SS

iTrader: (2)

That cam has a lot of overlap. With just a few psi it might do okay, but any more than that would probably not be so good. If it's the sound and chop that you like, just get a cutout. Even a turbo spec cam will sound pretty good with a cutout

soloman369

iTrader: (13)

"I love the sound of it, Definitely nasty "

Is all I needed to know, that you don't know what your getting your self into

Ron_Stoppable

iTrader: (1)

Don't go for the sound alone, whatever its going to sound like, its going to sound like.... you need to be careful with overlap especially depending on the size of the turbine on whatever turbo you're using. While overlap can be your friend, Overlap can also contribute to exhaust backpressure which will limit the amount overall power you're able to make, especially if already using a limited 96mm turbine with 360ish cubic inch. (Borg S400 series). "Camshaft Overlap" is what causes the exhaust " Chop". All the while, Compression, cubic inch, idle timing ect all have big impacts on the sound. I would personally call tooley @ BTR and discuss your goals with him.

Photochop

iTrader: (74)

The engine doesnt care what cams in it, its going to make power regardless. Now will that camshaft be optimum at boost levels over 8-10psi, nope.

Mavn

iTrader: (3)

false lol

Photochop

iTrader: (74)

How so?

The engine will run with a big cam, and make decent numbers, just much less efficient.

Mavn

iTrader: (3)

gametech

iTrader: (1)

You will need a turbo with a huge exhaust turbine and spin that motor up pretty high to make use of that size cam. This would make me worry about the lack of forged internals. You could definitely add power, but you will end up with a lot more show than go. I'm picturing a nasty sounding motor that barely idles, but still has turbo lag and has to cut rpm early to keep the not forged internals intact. Does not sound like a good combination of parts.

Photochop

iTrader: (74)

^Ding ding ding. Combination is everything.

lsx4thewin

Yeah I see what you guys are talking about. I wanted to stick to n/a but I just keep getting this itch for more power. But I have done all I can without adding nitrous which is an option.
Im guessing that getting a procharger is also I no go with this size cam?

JoeNova

Blowers with a good free flowing exhaust can make better use of a big N/A cam than a turbo will.

HCI2000SS

iTrader: (2)

Procharger at the same power will probably be a little more accepting than the turbo with that cam, but yeah the same principals apply more or less. You'll still be limited and blow out a lot of that boost due to the overlap of that cam.. If you must stick with that cam then a good centrifugal blower would be the best bet

lsx4thewin

I think it was mostly because I just got the 370 built with this cam that I don't want to have to get another one lol I might just run nitrous for awhile and enjoy the cam. Maybe do a 100 shot? I don't have forged internals. You think the engine will hold 100-150 shot??

HCI2000SS

iTrader: (2)

Yep I totally get what you're saying. I run a 150 shot now on my LQ9, and used to run a 100 shot on my old LS1 setup. With the right tune, plugs, fuel, timing, etc...a 100-150 shot is no problem for a stock internal LS1. I personally love nitrous since it allows me to run an aggressive n/a setup without affecting or changing anything

lsx4thewin

Ive got a great tuner so im not worried about that part. I think for me right now running nitrous would be the best thing. Plus it is a lot cheaper LOL!!! Or so it seems. Maybe im wrong.
Ive heard 6.0 really can take a lot. It will be my first time using nitrous. Always have bene n/a.

HCI2000SS

iTrader: (2)

Yep having a good tuner is huge especially when dealing with forced induction like this. If it were me I'd just do a 100 shot on your setup....no more and no less. It's a nice improvement, but no so much that you're pushing the limits. Know what I mean. Btw if you predominantly use it on the street vs the track, a bottle will last quite a while since you rarely make full 1/4 mile passes on the street. Bang for the buck it's impossible to beat

Luke19901

100-150 shot on 6.0 in 4200lb car feels comparable to a small PD blower on about 7psi boost pump fuel.
in an auto with a stall the nitrous comes on aggressive like a PD blower and pulls like a train.

BUT.....

after you've shown off to your mate and done 4 laps around the block your 10lb bottle is empty and you'll be paying to fill it up again. (refills in western Australia is about $18/lb) so $180 of fun that lasts 4 laps around the block. bigger the shot faster it runs out.

gas is initially cheaper but with constant bottle refills it adds up pretty quick