Looking for a Chopy Cam
Looking for a Choppy Cam The cam is going into a 1971 C-10 truck. I am looking for a cam that sounds really choppy. I have a mildly built ls1 block. Not realy looking for HP but if it comes with it thats fine. Does anyone have any recomendations?
Last edited by rawpwr7; Aug 1, 2005 at 01:30 PM.
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From: The South
Originally Posted by SouthFL.02.SS
If you're looking for a choppy cam, with not too much emphasis on HP (but it will still perform well). GMPP Hot Cam.
It's relatively cheap and you can run LS6 springs so you will virtually never have to worry about swapping springs again. For a lot of chop look at the ASA cam. Won't make great power, but will be better than stock.
My cam is pretty choppy. It makes fairly good power too for what it was designed for. It's good on spring life as well. (soft lobes) I know you said you didn't care about power, but, with this cam the more you let it breathe the more power it will make.
The heads have comp springs so i can handle a high lift cam. And my pistons have valve cuts on them. so my setup can support a high lift but i know that lift is not all that is going to make it choppy. What LSA should i look at? ie. 112, 114, 115. I was thinking a t-rex.
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From: Miami
Originally Posted by rawpwr7
The heads have comp springs so i can handle a high lift cam. And my pistons have valve cuts on them. so my setup can support a high lift but i know that lift is not all that is going to make it choppy. What LSA should i look at? ie. 112, 114, 115.
Also, a big, traditional split with a 112 or below LSA will do it.
Cams to look into, from small to large....
Hot Cam (GMPP)- .525 lift, easy on springs, 112 lsa, chops hard
ASA Cam (GMPP)- .525 lift, easy on springs, 110 lsa, lopes hard.
TSP 231/237 (Texas Speed--->) Lazy ramps, easy on springs, 112 lsa, chops hard, top end cam.
F14 (Futral) Cam Motion lobes, great tq across the rev range
G5x3 (LG) aggressive lobes, max power!
TRex (Thunder) aggressive lobes, max power! LOPES HARD!
All of these lope hard.
There's tons more to choose from, I just threw those out from the top of my head.
Also, tuning affects the audible "lope" too.
Last edited by SouthFL.02.SS; Aug 1, 2005 at 03:15 PM.
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Verdad Gallardo 11 Second Club
Joined: Feb 2003
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From: The South
Originally Posted by rawpwr7
The heads have comp springs so i can handle a high lift cam. And my pistons have valve cuts on them. so my setup can support a high lift but i know that lift is not all that is going to make it choppy. What LSA should i look at? ie. 112, 114, 115. I was thinking a t-rex.
https://ls1tech.com/forums/generation-iii-internal-engine/327734-cam-guide.html
You have a LOT to learn, and apparently forget as well.
Originally Posted by SouthFL.02.SS
Hot Cam (GMPP)- .525 lift, easy on springs, 112 lsa, chops hard
ASA Cam (GMPP)- .525 lift, easy on springs, 110 lsa, lopes hard.
TSP 231/237 (Texas Speed--->) Lazy ramps, easy on springs, 112 lsa, chops hard, top end cam.
F14 (Futral) Cam Motion lobes, great tq across the rev range
G5x3 (LG) aggressive lobes, max power!
TRex (Thunder) aggressive lobes, max power! LOPES HARD!
ASA Cam (GMPP)- .525 lift, easy on springs, 110 lsa, lopes hard.
TSP 231/237 (Texas Speed--->) Lazy ramps, easy on springs, 112 lsa, chops hard, top end cam.
F14 (Futral) Cam Motion lobes, great tq across the rev range
G5x3 (LG) aggressive lobes, max power!
TRex (Thunder) aggressive lobes, max power! LOPES HARD!
239/251//525/525//106 max power and lopes like a SOB from hell
Keith
Read the article. A lot of info thank you but in there it stated "Many enthusiasts purchase a camshaft strictly on the basis of how it sounds. A cam with generous overlap creates that distinctive choppy idle that just sounds cool."
But the choppy sound that i am looking for comes with cams with a LSA of 112 and lower like the GMPP cam with a LSA of 106??? I still do not understand.
But the choppy sound that i am looking for comes with cams with a LSA of 112 and lower like the GMPP cam with a LSA of 106??? I still do not understand.
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From: Miami
Originally Posted by rawpwr7
Read the article. A lot of info thank you but in there it stated "Many enthusiasts purchase a camshaft strictly on the basis of how it sounds. A cam with generous overlap creates that distinctive choppy idle that just sounds cool."
But the choppy sound that i am looking for comes with cams with a LSA of 112 and lower like the GMPP cam with a LSA of 106??? I still do not understand.
But the choppy sound that i am looking for comes with cams with a LSA of 112 and lower like the GMPP cam with a LSA of 106??? I still do not understand.
Big split (like the ASA with a 226/236 int/exh).
Go down to a 106 lsa and you're going to have tuning nightmares. Stay above 110lsa.
11 Second Club
Joined: Feb 2003
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From: The South
Originally Posted by rawpwr7
Read the article. A lot of info thank you but in there it stated "Many enthusiasts purchase a camshaft strictly on the basis of how it sounds. A cam with generous overlap creates that distinctive choppy idle that just sounds cool."
But the choppy sound that i am looking for comes with cams with a LSA of 112 and lower like the GMPP cam with a LSA of 106??? I still do not understand.
But the choppy sound that i am looking for comes with cams with a LSA of 112 and lower like the GMPP cam with a LSA of 106??? I still do not understand.
Overlap comes from a lot more than simply the LSA. My cam has an LSA of 113, and it lopes HARD. (13.5* at .05" lift)
The equation for overlap is:
[(intake duration + exhaust duration) divided by 4] - LSA, and finally multiply by two.
You can use this to determine the overlap at any point of measurement. Most common measurements are at .05" lift but taking more into considerion, if you can find them, will tell you more.
Originally Posted by SouthFL.02.SS
For lope, it's overlap.
Also, a big, traditional split with a 112 or below LSA will do it.
Cams to look into, from small to large....
Hot Cam (GMPP)- .525 lift, easy on springs, 112 lsa, chops hard
ASA Cam (GMPP)- .525 lift, easy on springs, 110 lsa, lopes hard.
TSP 231/237 (Texas Speed--->) Lazy ramps, easy on springs, 112 lsa, chops hard, top end cam.
F14 (Futral) Cam Motion lobes, great tq across the rev range
G5x3 (LG) aggressive lobes, max power!
TRex (Thunder) aggressive lobes, max power! LOPES HARD!
All of these lope hard.
Also, a big, traditional split with a 112 or below LSA will do it.
Cams to look into, from small to large....
Hot Cam (GMPP)- .525 lift, easy on springs, 112 lsa, chops hard
ASA Cam (GMPP)- .525 lift, easy on springs, 110 lsa, lopes hard.
TSP 231/237 (Texas Speed--->) Lazy ramps, easy on springs, 112 lsa, chops hard, top end cam.
F14 (Futral) Cam Motion lobes, great tq across the rev range
G5x3 (LG) aggressive lobes, max power!
TRex (Thunder) aggressive lobes, max power! LOPES HARD!
All of these lope hard.
