10-09-2020, 05:20 AM | #43 | |
Shifts under load
Drives: 2020 Camaro 1SS 1LE rally green Join Date: Apr 2017
Location: Fuquay-Varina, NC
Posts: 1,295
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Quote:
Duration @ .050" Lift( Deg): Intake: 228 / Exhaust: 248 Maximum Lift (in) W/ 1.7 Rocker: Intake: .577 / Exhaust: .577 Lobe Centerline ( deg): 110 Technical Notes: Design for 1.81:1 rocker arms; requires non-afm lifters But I would say there are probably better cams by Cam Motion, BTR, etc for us lower lift desiring folks.
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10-09-2020, 03:52 PM | #44 |
Drives: 2018 Camaro SS 1LE Join Date: Jul 2018
Location: Stuttgart, Germany
Posts: 807
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Timbo-1LE: Hope you continue to pursue the GM Hot Kit. Are you ordering piecemeal or as a combination part number? My Chevy rep quoted better numbers for the individual parts and no comment on back order.
It would be great if you could dyno numbers before and after - my technique to confirm the investment (great for the rest of us too!). I think some benefit to the GM name...even resale value for parts or a car equipped. I'm aware possibly not the best option, but I recall easily selling my GM Hot Cam for my Gen II LT4 for decent return.
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10-09-2020, 08:09 PM | #45 |
Drives: 2017 SS 1LE Join Date: Mar 2017
Location: Florida
Posts: 617
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Tim M, still looking. I was pursuing the complete kit. I did check local dealer and he also stated in back order. Will advise.
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10-10-2020, 01:56 PM | #46 |
Drives: 17 2SS, 8L90, Cam, Heads, E85 Join Date: Dec 2016
Location: US
Posts: 1,201
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Does anyone know who makes the cam and ports the heads for GMPP?
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10-11-2020, 12:29 AM | #47 |
Drives: 2018 Camaro SS 1LE Join Date: Jul 2018
Location: Stuttgart, Germany
Posts: 807
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I thought I had read (forum) that Katech does the porting, but unconfirmed. Unsure on the cam - OEM factories?
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10-11-2020, 05:46 AM | #48 |
Drives: 6th gen Join Date: Aug 2013
Location: US
Posts: 3,675
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I thought I read lme did it?
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‘22 2SS 1LE M6 Summit White - RF, Flexfuel, LT2 intake, 95mm tb, ATI udp, VT ramair, full 28” dragpack - 11.68@122
‘16 1SS M6 LT2 intake + boltons on DR 11.0@126+ (Sold) |
04-28-2021, 06:55 PM | #49 |
Drives: 2017 SS 1LE Join Date: Mar 2017
Location: Florida
Posts: 617
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Could not find the complete kit, so I nabbed the can at summit, also read the ported heads dropped cr by 1...
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05-07-2021, 09:16 AM | #50 |
Drives: 17 2SS, 8L90, Cam, Heads, E85 Join Date: Dec 2016
Location: US
Posts: 1,201
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I saw that minor difference in chamber size too, but I was thinking it's just a typo. I forgot the LS mill to chamber size factor but seems like 1cc wouldn't be very much and wouldn't make that much difference in compression anyway.
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05-07-2021, 11:58 AM | #51 |
Drives: 6th gen Join Date: Aug 2013
Location: US
Posts: 3,675
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Good catch if it’s 1cc and not 1 point.
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‘22 2SS 1LE M6 Summit White - RF, Flexfuel, LT2 intake, 95mm tb, ATI udp, VT ramair, full 28” dragpack - 11.68@122
‘16 1SS M6 LT2 intake + boltons on DR 11.0@126+ (Sold) |
05-07-2021, 04:55 PM | #52 |
Drives: 2017 SS 1LE Join Date: Mar 2017
Location: Florida
Posts: 617
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Sent a check to Katech, head porting, LT1 hot cam, new valve train, oil pump, a few other items. Focused on torque and reliability. Should be dropping it off in 8-10 weeks. Get a dyno'd so should have numbers...
Also one point of compression ratio, not CC... But they listed like five items they are doing to my heads.... He also said to keep the LT2 manifold.. He said they have had good luck with them, his view was 5 HP from MSD, 911 hunting Last edited by Timbo-1LE; 05-07-2021 at 05:08 PM. |
05-07-2021, 05:48 PM | #53 | |
Drives: 2019 Camaro 1LE Shock Candy Join Date: Mar 2016
Location: Garage
Posts: 1,757
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Quote:
I think we will be both happy with Katechs work.
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LT4 1.7 Supercharger snout ported & Meth
103 Katech TB, KATECH Custom Heads, DSX In-line fuel TSP Headers, Spec P Super Twin Clutch, TSP EL C7 CAM Diamond Piston & Manley Rods, Roto Fab Big Gulp BTR Push Rods,LS7 Lifters, ARP, FI Chiller, Kirkey Seats SJM Line Lock, Hurst Pistol Grip. 747/739 RWHP street tune - 821/794 RWHP track tune 101 octane. 2014 Mini Cooper countryman S All4 M6 daily driver |
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05-07-2021, 06:40 PM | #54 | |
Drives: 17 2SS, 8L90, Cam, Heads, E85 Join Date: Dec 2016
Location: US
Posts: 1,201
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Quote:
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05-08-2021, 08:24 AM | #55 |
Drives: 2017 SS 1LE Join Date: Mar 2017
Location: Florida
Posts: 617
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Sorry, two different discussions. When doing reserch, one tuner stated the combustion chamber porting lowered cr by about a point with the GM kit. Discussions with Katech did not cover this topic, but they are.doing something called "head decking" on top of cbc porting, valve job, chamber porting. So assuming they again it back..
Remember I only bought the hot cam itself, could not find the heads. |
05-11-2021, 06:55 AM | #56 |
Drives: 2020 LT1 Join Date: Dec 2019
Location: Gilberts
Posts: 123
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If you are going for tq with the hot cam you may be disappointed. I only have 456 lb ft with long tubes, E, PTB, rotofab and the LT2. Soggy below 3500, rips hard past that. Maybe the bump in CR will aid in TQ. Good luck
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