Help with my 6.0 power curve
Thread Starter
Teching In
Joined: Aug 2014
Posts: 49
Likes: 0
Help with my 6.0 power curve I got my truck dyno tuned and have been happy with the power for awhile now but wondering what my next mods should be to the motor so my power curve will increase. I called TSP and they said their cams power curve should be 1900 - 6300/6400. My power curve is like 2600 - 5800 right now. Mods are...
- Stock shortblock LY6 (VVT delete)
- Stock L92 heads with LS3 headgaskets
- TSP cam kit 229/236 112LSA .624/.615
- 7.40 Pushrods
- LS3 intake manifold, injectors
- Factory LY6 TB
- Big 4 inch piping intake with massive filter
- 1 3/4" Mid length headers to a y, then into a single in and dual out magnaflow
- T56 Trans
Dyno graph
- Stock shortblock LY6 (VVT delete)
- Stock L92 heads with LS3 headgaskets
- TSP cam kit 229/236 112LSA .624/.615
- 7.40 Pushrods
- LS3 intake manifold, injectors
- Factory LY6 TB
- Big 4 inch piping intake with massive filter
- 1 3/4" Mid length headers to a y, then into a single in and dual out magnaflow
- T56 Trans
Dyno graph
TECH Resident
Joined: Apr 2014
Posts: 985
Likes: 12
I got my truck dyno tuned and have been happy with the power for awhile now but wondering what my next mods should be to the motor so my power curve will increase. I called TSP and they said their cams power curve should be 1900 - 6300/6400. My power curve is like 2600 - 5800 right now. Mods are...
- Stock shortblock LY6 (VVT delete)
- Stock L92 heads with LS3 headgaskets
- TSP cam kit 229/236 112LSA .624/.615
- 7.40 Pushrods
- LS3 intake manifold, injectors
- Factory LY6 TB
- Big 4 inch piping intake with massive filter
- 1 3/4" Mid length headers to a y, then into a single in and dual out magnaflow
- T56 Trans
Dyno graph
- Stock shortblock LY6 (VVT delete)
- Stock L92 heads with LS3 headgaskets
- TSP cam kit 229/236 112LSA .624/.615
- 7.40 Pushrods
- LS3 intake manifold, injectors
- Factory LY6 TB
- Big 4 inch piping intake with massive filter
- 1 3/4" Mid length headers to a y, then into a single in and dual out magnaflow
- T56 Trans
Dyno graph
Well known cam grinder and tell
them exactly what you want. Google might help out. Good luck
Its because TSP doesn't have a -clue- what they are doing.
I had a 370" with a stock ls3 top end and a TSP cam (got it CHEAP from a buddy).
It sounded great. That is about where the pros stop.
It ran like complete dog ****.
Was lazy as all get out down low and died off quick up top.
They are a joke.
Call John Bewley and have him spec you a cam. Viola, problem solved.
I had a 370" with a stock ls3 top end and a TSP cam (got it CHEAP from a buddy).
It sounded great. That is about where the pros stop.
It ran like complete dog ****.
Was lazy as all get out down low and died off quick up top.
They are a joke.
Call John Bewley and have him spec you a cam. Viola, problem solved.
My power curve is like 2600 - 5800 right now. Mods are...
Only way to get more power everywhere would be with some better heads.
Its because TSP doesn't have a -clue- what they are doing.
I had a 370" with a stock ls3 top end and a TSP cam (got it CHEAP from a buddy).
It sounded great. That is about where the pros stop.
It ran like complete dog ****.
Was lazy as all get out down low and died off quick up top.
They are a joke.
I had a 370" with a stock ls3 top end and a TSP cam (got it CHEAP from a buddy).
It sounded great. That is about where the pros stop.
It ran like complete dog ****.
Was lazy as all get out down low and died off quick up top.
They are a joke.
Thread Starter
Teching In
Joined: Aug 2014
Posts: 49
Likes: 0
This is interesting, I always thought tsp was pretty knowledgeable. The cam is a tsp cam, I may call Lil Johns then and ask. I also want to be set up for a turbo in the future, so I would probably go with a slight turbo cam. Would a holley hi-ram and nick Williams tb benefit me?
Trending Topics
Thread Starter
Teching In
Joined: Aug 2014
Posts: 49
Likes: 0
That's where it looks like it starts on my dyno sheet, and it does feel like turbo lag almost with this cam. Motor doesn't start waking up until later rpms.
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?
Pouria Savadkouei
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine
Verdad Gallardo
7 Most Reliable High-Performance Engines GM Has Ever Built
Verdad Gallardo
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin
Verdad Gallardo
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
That's where it looks like it starts on my dyno sheet, and it does feel like turbo lag almost with this cam. Motor doesn't start waking up until later rpms.
I go back to the heads. I would say your issue with being laggy is mostly the big heads on a small bore rather than the cam. Plus low compression would make for a car that's lazy to drive downlow.
Get some ported cathedrals with 11+ compression and watch that car with the same cam feel like an animal down low.
Thread Starter
Teching In
Joined: Aug 2014
Posts: 49
Likes: 0
That's just where the dyno operator started the pull, has nothing to do with where the "power curve" of the cam is. He could've started that pull at 1000rpm or 4000rpm.
I go back to the heads. I would say your issue with being laggy is mostly the big heads on a small bore rather than the cam. Plus low compression would make for a car that's lazy to drive downlow.
Get some ported cathedrals with 11+ compression and watch that car with the same cam feel like an animal down low.
I go back to the heads. I would say your issue with being laggy is mostly the big heads on a small bore rather than the cam. Plus low compression would make for a car that's lazy to drive downlow.
Get some ported cathedrals with 11+ compression and watch that car with the same cam feel like an animal down low.
Could I just port, Polish and Mill my current ones?
My heads are rectangle now so would going cathedrals help much more then rectangles? Also whos site is good to check for these heads?
Could I just port, Polish and Mill my current ones?
Thread Starter
Teching In
Joined: Aug 2014
Posts: 49
Likes: 0
Ya that makes sense but now if I plan to go boosted I also have a pretty good setup for it because of the lower compression? So many ways to look at it.
Bringing boost in the equation is going to turn your plans upside down. You need a completely different setup for that vs. NA. And it would be tough or downright impossible to have a setup that works great now and later when in boost.
I suggest figuring out what your ultimate goal is. If it is indeed boost then forget everything we just talked about and start off fresh with something that will work for boosted setup even if it's inneficient right now.
I suggest figuring out what your ultimate goal is. If it is indeed boost then forget everything we just talked about and start off fresh with something that will work for boosted setup even if it's inneficient right now.
I got it cheap, so I used it.
I figured it'd do half ***. It did -horrible-.
I didn't have very high expectations at all... It failed even that by a long shot.
The cam was specd by tsp for ls3 heads. It wasn't mismatched on my end. Tsp is just clueless.
That's just where the dyno operator started the pull, has nothing to do with where the "power curve" of the cam is. He could've started that pull at 1000rpm or 4000rpm.
I go back to the heads. I would say your issue with being laggy is mostly the big heads on a small bore rather than the cam. Plus low compression would make for a car that's lazy to drive downlow.
Get some ported cathedrals with 11+ compression and watch that car with the same cam feel like an animal down low.
I go back to the heads. I would say your issue with being laggy is mostly the big heads on a small bore rather than the cam. Plus low compression would make for a car that's lazy to drive downlow.
Get some ported cathedrals with 11+ compression and watch that car with the same cam feel like an animal down low.
Do I recommend going to a cathedral? Sure.
Would his problem get dramatically better with proper cam? Absolutely.
Would his problem get dramatically better with proper cam? Absolutely.
Yes he can get a smaller cam spec'd for those heads/compression to help with the laziness down low...but that thing will fall on its face not much further than the current 5800rpm he has now. If he gets a cam spec'd for better power uptop then it will hurt or keep the same lazy downlow. You can't have both with the current setup no matter how custom you go with the cam.
If he truly wants power everywhere, from 2000 to well past 6000 then he has to do something with the heads and compression. No other way around it.
Which now goes back to the OP and how much he wants to spend to fix this. Get more pep down low he can do it for as much as it costs to do a cam. If you want to improve all over well then he has to spend some money.
The thing with that is he's kinda dug himself in an hole with the lack of compression, small bore and big heads.
Yes he can get a smaller cam spec'd for those heads/compression to help with the laziness down low...but that thing will fall on its face not much further than the current 5800rpm he has now. If he gets a cam spec'd for better power uptop then it will hurt or keep the same lazy downlow. You can't have both with the current setup no matter how custom you go with the cam.
If he truly wants power everywhere, from 2000 to well past 6000 then he has to do something with the heads and compression. No other way around it.
Which now goes back to the OP and how much he wants to spend to fix this. Get more pep down low he can do it for as much as it costs to do a cam. If you want to improve all over well then he has to spend some money.
Yes he can get a smaller cam spec'd for those heads/compression to help with the laziness down low...but that thing will fall on its face not much further than the current 5800rpm he has now. If he gets a cam spec'd for better power uptop then it will hurt or keep the same lazy downlow. You can't have both with the current setup no matter how custom you go with the cam.
If he truly wants power everywhere, from 2000 to well past 6000 then he has to do something with the heads and compression. No other way around it.
Which now goes back to the OP and how much he wants to spend to fix this. Get more pep down low he can do it for as much as it costs to do a cam. If you want to improve all over well then he has to spend some money.
Mine was a 370" with 12:1 cr (+12 dome) and it was still a dog down low.
Tsp is clueless.
If he is half way happy right now I'd be willing to bet John could spec him a cam that would satisfy him until he goes forced induction.
Btw forced induction... Grab some 317s and johns stage 2 or 3 turbo cam and roll. Not much to that.
On The Tree
Joined: Mar 2015
Posts: 154
Likes: 12
Its because TSP doesn't have a -clue- what they are doing.
I had a 370" with a stock ls3 top end and a TSP cam (got it CHEAP from a buddy).
It sounded great. That is about where the pros stop.
It ran like complete dog ****.
Was lazy as all get out down low and died off quick up top.
They are a joke.
Call John Bewley and have him spec you a cam. Viola, problem solved.
I had a 370" with a stock ls3 top end and a TSP cam (got it CHEAP from a buddy).
It sounded great. That is about where the pros stop.
It ran like complete dog ****.
Was lazy as all get out down low and died off quick up top.
They are a joke.
Call John Bewley and have him spec you a cam. Viola, problem solved.