Reverse torquer cam (the other side of the coin)
On The Tree
Joined: Feb 2006
Posts: 109
Likes: 0
With the proper valve events, and good exhaust, YES
(got a cat back, nothing more is planned)
Who would be qualified (not guessing) to spec out a reverse split tow cam like mentioned above? I would think that not many people has actually any experience with a reverse split Gen III 21x-20x .5xx / .5xx 110 lsa cam?
If I am wrong, all the better!
//
Good exhaust would be a good set of long tube headers going into an off-road Y-pipe. I've read that that's the best for a 5.3 instead of duals. Add a cutout and you're in there.
So would a small reverse split cam be a good one for a pickup like my Sierra? Not looking for much low end sacrifice since it will tow at times. Just more power throughout the powerband.
TECH Senior Member
Joined: Nov 2001
Posts: 10,341
Likes: 1
Originally Posted by bad6as
so when would a 230/230 or 232/232 come in compared to a 232/230 or 230/232
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How would a reverse split cam work on good flowing heads? Are these cams basically for restrictive intakes? Ive heard of someone on here going with the TR230, trickflows, and FAST 90/90 and putting out around 450 rwhp. What about compression? Do they like high compression or somewhere around stock.
Originally Posted by STRETCH'S T/A
I was all set to get a 231/237 .589 .595 112 lsa cam, but after talking to Larry @ Speed Inc. and telling him my car is just a summertime/weekend cruiser, wanted to stay N/A, and I still wanted to maintain somewhat stock drivibility, he suggested their reverse split 228/222 .588 .581 114 +5 cam. This cam is perfect in my book, great drivibility, and made nice power, it made 394rwhp. This cam will also work great with my future mods, some TEA Stage 1.5 5.3L heads, and Fast 90/90 set up.
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Thread Starter
TECH Senior Member
Joined: Mar 2004
Posts: 14,620
Likes: 17
From: BFE
Well now I can add to this:
I was pulling my Z from track duty for this year and I was tired of lope and rough idle, burning eyes etc...
But I wanted to keep as much power, make it Stealthy and keep the 12:1 SCR on my 370.
Guess what I did?
I stuffed it with a 224/222 .609/.581 117 LSA (XFI/XE-R) custom grind (The SS Cam) and I was ammazed at the results.
More trq than with the bigger cam and only lost 12 rwhp.
I will make a thread and post a dynograph once it is fully fine tuned.
I was pulling my Z from track duty for this year and I was tired of lope and rough idle, burning eyes etc...
But I wanted to keep as much power, make it Stealthy and keep the 12:1 SCR on my 370.
Guess what I did?
I stuffed it with a 224/222 .609/.581 117 LSA (XFI/XE-R) custom grind (The SS Cam) and I was ammazed at the results.
More trq than with the bigger cam and only lost 12 rwhp.
I will make a thread and post a dynograph once it is fully fine tuned.
So here are a couple cams I have been thinking about running in my set up:
XFI based 236/230 106/106
XFI based 236/230 106/108
IVC @ .050 is 44*
Both have 8.57 DCR based on my setup (see link bellow for set up as I plan on doing a cam shoot out).
As far as PV it's as good or better than a TREX with both intake and exhaust so it might work in a stock shortblock/head combo:
IVO Points:
______TREX__Custom
.006__37.4____37
.050__13.5____12
.200_(-26.2)___(-26.5) * These are ATDC
EVC Points:
______TREX__Custom
.006__39.8____30
.050__13.2____5
.200_(-27.4)___(-33) *these are BTDC
The thing I like about the first cam is it's EVO of 41 @ .050 but a little concerned about the 21* of overlap
The Second cam has a later EVO of 45* @ .050 but has 17* overlap
Another Idea I had was the same Cam but a 107/107
This moves the IVC to 45* and the EVO to 42* moves overlap to 19* and the PV clearence is even better on the intake and still better than the TREX. It does drop DCR a little bit to 8.50
BTW, this is going in my 63 P/U that weighs about 4,200lbs so low rpm TQ is wanted as well as some serious top end pull.
Cam shoot out thread: https://ls1tech.com/forums/generation-iii-internal-engine/783007-cam-shoot-out-who-wants-see-5-cams-back-back-testing.html
Suggestions, thoughts welcome.
XFI based 236/230 106/106
XFI based 236/230 106/108
IVC @ .050 is 44*
Both have 8.57 DCR based on my setup (see link bellow for set up as I plan on doing a cam shoot out).
As far as PV it's as good or better than a TREX with both intake and exhaust so it might work in a stock shortblock/head combo:
IVO Points:
______TREX__Custom
.006__37.4____37
.050__13.5____12
.200_(-26.2)___(-26.5) * These are ATDC
EVC Points:
______TREX__Custom
.006__39.8____30
.050__13.2____5
.200_(-27.4)___(-33) *these are BTDC
The thing I like about the first cam is it's EVO of 41 @ .050 but a little concerned about the 21* of overlap
The Second cam has a later EVO of 45* @ .050 but has 17* overlap
Another Idea I had was the same Cam but a 107/107
This moves the IVC to 45* and the EVO to 42* moves overlap to 19* and the PV clearence is even better on the intake and still better than the TREX. It does drop DCR a little bit to 8.50
BTW, this is going in my 63 P/U that weighs about 4,200lbs so low rpm TQ is wanted as well as some serious top end pull.
Cam shoot out thread: https://ls1tech.com/forums/generation-iii-internal-engine/783007-cam-shoot-out-who-wants-see-5-cams-back-back-testing.html
Suggestions, thoughts welcome.
Last edited by LIL SS; Sep 15, 2007 at 01:38 PM.
Originally Posted by PREDATOR-Z
Well now I can add to this:
I was pulling my Z from track duty for this year and I was tired of lope and rough idle, burning eyes etc...
But I wanted to keep as much power, make it Stealthy and keep the 12:1 SCR on my 370.
Guess what I did?
I stuffed it with a 224/222 .609/.581 117 LSA (XFI/XE-R) custom grind (The SS Cam) and I was ammazed at the results.
More trq than with the bigger cam and only lost 12 rwhp.
I will make a thread and post a dynograph once it is fully fine tuned.
I was pulling my Z from track duty for this year and I was tired of lope and rough idle, burning eyes etc...
But I wanted to keep as much power, make it Stealthy and keep the 12:1 SCR on my 370.
Guess what I did?
I stuffed it with a 224/222 .609/.581 117 LSA (XFI/XE-R) custom grind (The SS Cam) and I was ammazed at the results.
More trq than with the bigger cam and only lost 12 rwhp.
I will make a thread and post a dynograph once it is fully fine tuned.
TECH Addict
iTrader: (5)
Joined: Jan 2004
Posts: 2,458
Likes: 0
From: Miami, Fl. - Hurricane Highway
I have been comparing every dyno graph you guys have posted to the one i have of my MS3. And so far on paper my car is getting circles run around it. Then again i don't have all the mods to make the big cam worth it, such as the gears, ls6 intake, heads, etc. If this thread would have existed prior to my MS3 purchase i would have had a reverse split cam. I have raced a few cars from a first gear roll, and my car doesn't seem impressive till i get to the higher rpms. Yes gears would definetly change that, but when i compare a reverse split graph to mine, the MS3 looks like it has no power down low compared to one of the reverse split. I think every new member should read this thread before they jump on the peak HP wagon like many of us have done.
-Joel
-Joel
from everything i have read and all, it seems like the reverse splits make better under the curve for a DD street car!! but im curious, how lets say the X1 or TR 230/224 would do vs. the bigger cams from a roll? because they would kick the bigger cams *** under the curve, will they be hanging right there with the big cams or would they just get walked?
Originally Posted by 2000Hawk
I have been comparing every dyno graph you guys have posted to the one i have of my MS3. And so far on paper my car is getting circles run around it. Then again i don't have all the mods to make the big cam worth it, such as the gears, ls6 intake, heads, etc. If this thread would have existed prior to my MS3 purchase i would have had a reverse split cam. I have raced a few cars from a first gear roll, and my car doesn't seem impressive till i get to the higher rpms. Yes gears would definetly change that, but when i compare a reverse split graph to mine, the MS3 looks like it has no power down low compared to one of the reverse split. I think every new member should read this thread before they jump on the peak HP wagon like many of us have done.
-Joel
-Joel
Thread Starter
TECH Senior Member
Joined: Mar 2004
Posts: 14,620
Likes: 17
From: BFE
Originally Posted by TXZ28LS1
from everything i have read and all, it seems like the reverse splits make better under the curve for a DD street car!! but im curious, how lets say the X1 or TR 230/224 would do vs. the bigger cams from a roll? because they would kick the bigger cams *** under the curve, will they be hanging right there with the big cams or would they just get walked?
So instead of advancing I retard and I keep the split very tight, usualy no more than 2* (like 224/222, or 230/228 etc...)
TECH Addict
iTrader: (5)
Joined: Jan 2004
Posts: 2,458
Likes: 0
From: Miami, Fl. - Hurricane Highway
Trust me i know what i was getting myself into when i got the MS3, i was planning on spraying on top of it. But now i feel like heading in the all motor direction, so basically no spray and no gears makes this cam a dog. Don't get me wrong it is fun when it gets up in that RPM range, but when i see graphs of other cams mine looks like it can't hang. Either way this is a very informative thread, and will stay checking it out.
-Joel
-Joel