Cam Selection
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Cam Selection Discussion starter · #1 · 4h ago
I need help selecting a cam for my 6.2 LS. I’m going to have a 3.55 or 3.73 rear gear most likely with a M21. Engine has 10.5 compression with stock unmilled heads and dual plane intake with a carburetor. 2” headers with a full exhaust system. Street car with occasional strip time. I’m not worried about low speed surging. The smaller cams are only off by a couple horsepower it looks like. Which cam do you think I should go with?
www.texas-speed.com
www.texas-speed.com
www.texas-speed.com
I need help selecting a cam for my 6.2 LS. I’m going to have a 3.55 or 3.73 rear gear most likely with a M21. Engine has 10.5 compression with stock unmilled heads and dual plane intake with a carburetor. 2” headers with a full exhaust system. Street car with occasional strip time. I’m not worried about low speed surging. The smaller cams are only off by a couple horsepower it looks like. Which cam do you think I should go with?
TSP Stage 2 LS3 N/A Camshaft
NEW Texas Speed Stage 2 LS3 229/244 .629"/.615" Camshaft www.texas-speed.comTSP Stage 3 LS3 N/A Camshaft
NEW Texas Speed Stage 3 LS3 231/246 .640"/.615" Camshaft www.texas-speed.comTSP Stage 4 "F-35" LS3 N/A Camshaft
NEW Texas Speed Stage 4 "F-35" LS3 235/248 .649"/.615" Camshaft www.texas-speed.comLast edited by Classic_6.2; Dec 16, 2023 at 11:32 PM.
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TSP Stage 2 LS3 N/A Cam Specs: 229/244 .629"/615” 112 LSA, 109 ICL
TSP Stage 3 LS3 N/A Cam Specs: 231/246 .640"/615" 111 LSA, 109 ICL
TSP Stage 4 "F-35" LS3 N/A Cam Specs: 235/248 .649/615 111 LSA, 109.5 ICL
TSP Stage 3 LS3 N/A Cam Specs: 231/246 .640"/615" 111 LSA, 109 ICL
TSP Stage 4 "F-35" LS3 N/A Cam Specs: 235/248 .649/615 111 LSA, 109.5 ICL
Last edited by Classic_6.2; Dec 16, 2023 at 11:32 PM.
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Comp cam 54-454-11 and the
Cam Dynamics 229/244 Hydraulic Roller Cam for GM LS Gen III/IV.
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https://www.summitracing.com/parts/s...make/chevrolet
https://www.summitracing.com/parts/s...make/chevrolet
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From: Coast of San Mateo County Between Pacifica & HMB
With a dual plane intake, 2" headers, 3.73 gears, & 2.20 first gear, I would look real hard at the
Cam Motion LS Hot Rod Cam 227*/237* 111* +4* .595"/.587".
You would be much happier with performance and drivability imo.
My .02
Cam Motion LS Hot Rod Cam 227*/237* 111* +4* .595"/.587".
You would be much happier with performance and drivability imo.
My .02
[QUOTE=old motorhead;20533994]At this point, they are running the same crap from 20yrs ago which wasn't that great to begin with. I like spending my $$$ better than that. Comp is leading the pack with lobe design and BTR is putting effort into it too. Since it's slow around here these days, ask me how I feel about .660 spring kits for more controversy, lol
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[QUOTE=DualQuadDave;20534035]
At this point, they are running the same crap from 20yrs ago which wasn't that great to begin with. I like spending my $$$ better than that. Comp is leading the pack with lobe design and BTR is putting effort into it too. Since it's slow around here these days, ask me how I feel about .660 spring kits for more controversy, lol Whats the issue with the .660 spring kits? I was looking into the trick flow kit.
At this point, they are running the same crap from 20yrs ago which wasn't that great to begin with. I like spending my $$$ better than that. Comp is leading the pack with lobe design and BTR is putting effort into it too. Since it's slow around here these days, ask me how I feel about .660 spring kits for more controversy, lol
I typed 8701 instead of 8710. That cam looks perfect for my setup. Do you guys use the lifter trays or run link bar lifters? Not sure which brand to use but summit has these in the recommended parts.
https://www.summitracing.com/parts/s...make/chevrolet
https://www.summitracing.com/parts/s...make/chevrolet
https://www.summitracing.com/parts/s...make/chevrolet
https://www.summitracing.com/parts/s...make/chevrolet
Last edited by DualQuadDave; Dec 17, 2023 at 09:40 PM.
[QUOTE=Classic_6.2;20534036]I'm leary of them. I know everybody says they are PAC ones they are selling, but the china copies are bleeding in non-stop. I have seen several .660 kits lose like 20-30lbs of seat pressure in like 20-30k. That's a lot. I go overkill on springs anymore, because I beat on my stuff and it needs to perform and last.
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Seems smaller than the 8170R1. But a slightly loopier idle with a 6* IVO compared to the 5* on the 8710R1. Cam should peak sooner by the looks of it. Wouldn’t I be making far less power with this cam?
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The drop in lifters are fine, I run Melling usually for cheap LS7 stuff. The good GM ones are $450 these days and the Johnson''s drop in's are like $800, but worth it. For spring kit I like the PSI 1511ML for beehives and the Summit duals are decent for the $$. PAC 1207x springs if you want to do it once and have some room later for 1.8 roller rockers(Comp Pro Mag Bolt ons, recommended).
Navy's Cam Motion cam is a very good choice. It's a different animal than the 8710r1. The 8710r1 has a wide powerband overall, the Cam Motion cam is narrower, but will make a lot more torque overall through it's range. If you call Cam Motion, they can cut that on a different lobe and it'll have more lift, which you definitely want on a LS3 head. You just have to watch the PTV clearance and the Cam Motion cam will need to be checked for sure. The Summit cam should be checked(like every cam), but they engineered it pretty good as a drop in.