Turbo and biggish cam?
Thread Starter
On The Tree
Joined: Jun 2018
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Turbo and biggish cam? 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!
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!
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
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.
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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!
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!
Thread Starter
On The Tree
Joined: Jun 2018
Posts: 110
Likes: 0
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?
Im guessing that getting a procharger is also I no go with this size cam?
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
Thread Starter
On The Tree
Joined: Jun 2018
Posts: 110
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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
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??
Thread Starter
On The Tree
Joined: Jun 2018
Posts: 110
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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
Ive heard 6.0 really can take a lot. It will be my first time using nitrous. Always have bene n/a.
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.
Ive heard 6.0 really can take a lot. It will be my first time using nitrous. Always have bene n/a.
Launching!
Joined: Jan 2018
Posts: 283
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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
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