Project GatTagO

iTrader: (7)

Just installed the Ghost cam with the 7.425" pushrods, preload was right at .060".

This little cam kicks *** and drives so nice. I am in love with my Cougar all over again.

Andrew

warriorpluto

iTrader: (2)

What type of lifters did you have

bortous

I love cougars.

Project GatTagO

iTrader: (7)

Whatever lifters came stock in my LH8 engine.

Summitracing

We have a report from a well respected Calibrator that his LS3 powered C6 idled with 42 KPA at 715 rpm. Mavn reported that 650 rpm was where his LS1 was happy. Stock KPA for a LS3 is about 35 at 675 rpm. As more and more folks get a chance to run the Pro LS cams, we encourage you to send us idle clips and KPA numbers etc. Anything we can use to quantify them and help our customers make a purchasing decision.

Project GatTagO

iTrader: (7)

I wrote the following in another Summit cams thread:

Installed the Summit Stage 1 turbo, AKA Ghost cam. Drove from Alabama to Chicago, did the swap in my buddies garage. Started at 7:00am made first tuning drive at 3:30pm...LOL

Anyway, theatrics aside, this cam is way better than the ASA cam. Engine idles down to 750rpm no problem and still has a bit of lope. Nearly no raw fuel smell, ASA cam had 10 degrees of overlap, this cam has -3 degrees of overlap. Idles at 42 kPa, while the ASA cam idled at 58 kPa. After a few days of tuning, at WOT the midrange added 30% more fuel and at 6500 added about 20% fuel. It also pulls much harder in the higher RPMs, while the ASA cam was basically done by 6000rpm, and fuel usage confirms this. So not only is it making more torque, it is making more HP, probably 30HP more. On my drive back, checked fuel consumption and got a boost of 2-3mpg on the highway, logging over 500 miles and two tanks of gas.

So yeah....big improvement.

Andrew

jojo_3663mk3supra

I just recently put a 4.8 in a mk3 supra. It has ls6 intake with stock injector, long tube headers. Stock 706 heads and it’s all bolted to a t56. I eventually want to go boost, but for now I want to keep it n/a what do you recommend for cams where I can benefit from being n/a and than eventually going turbo.

Summitracing

The Ghost cam was originally in designed for boost so it does well with both but you way want to consider the .600 lift version of the Stage 2 Truck cam if you’re not going to be running a deep gear and prefer more low end grunt with that displacement. Part number on that is Sum-8720. It will also work well with boost due to limited overlap.

Project GatTagO

iTrader: (7)

I just posted a video of the Ghost cam on my IG. Feel free to repost it.

Andrew

Summitracing

Thank youl Very appreciated. We’ll get our team on it Monday.

jojo_3663mk3supra

Thanks! I was looking at the sum-8706 but never really paid attending to stage 1 “ghost cam”. I’m planning on revving the engine probably around 7200. Is there any big difference between the two or would it be just preference?

Summitracing

It's almost a matter of preference for what you are doing due to the way we have the valve events set. The Stage 2 SUM-8706 has a little more of an aggressive idle so let that be your guide

BracketRacer82

Will the 8706 play nice with pac 1218s in a sub 6400 rpm boosted application?

Summitracing

Yes, any of our .600 lift cams were designed for compatibility with the 1218 springs. If you like the redundancy of a dual spring, The TFS-2500286P with Steel retainer or a TFS-2500287P is a great deal for what they are.

LSleeper1500

Hey Summit, I ordered the SME-174003 spring kit to be paired up with the Stage 2 turbo cam with .600/.575 lift. I forgot to double check the max lift on the springs but it’s .600 as well. Should I upgrade to the TFS spring kit?

Summitracing

The SME-174003 is a nice spring kit...no problems to run it. Less expensive than the Nanopeened parts too and you'll be fine with those.

LSleeper1500

just wanted to make sure i didn’t need extra “wiggle” room with the springs being .600 max and the cam is a .600 on the intake side. thanks

wes302

Just thought i would share my video of summit stage 2 turbo cam in my ly6 6.0. Cam works really well in my blow thru set up!

Shimaze

I have a 2006 L33 5.3 that I am putting in a 2001 S10 Extreme. I am using the T56 with 3.73 gears. This is going to a daily driver that I plan to haul & tow light loads …not to exceed 2500lbs. I pulled my motorcycle & trailer with the stock 4.3 / 5-speed with a lightweight flywheel & stage 2 clutch with adequate results. The only issue was passing on the highway. I caused traffic jams when trying to pass semi-trucks at 60 MPH.

My question is: What is the difference in torque at 1500 to 2000 RPMs between the Stage 1 Drop In (SUM-8712), Stage 1 Hi-Lift (SUM-8719), & the Stage 2 (SUM-8701)?

I will be using the LS6 springs with either cams. I may also consider the Stage 3 truck cam (SUM-8713). I am also open to other cams, but I WILL NOT use anything other than a Summit Racing Pro LS Camshafts!

My concern is the very tall .50 overdrive 6th gear. My calculations are that I am going to be at 1708 @ 70 and 1952 RPMs @ 80 MPH with a 25.7” tire & 3.73 gears. I am going to need torque at those RPMs to move the truck on the highway. BTW - I will tow in 5th gear. For reference, my stock ’94 Z/28 5.7 LT1 did fine on the highway with the T56 & 3.42 gears and the same size tires.

I want to take advantage of the L33’s higher flowing LS6 heads (243/799) and the increased compression of the flat top piston (9.9 vs 9.5). But I am not interested in revving above 6200 RPMs so power below 6000 is my primary concern. The LS2 in my Trailblazer SS scares the bejesus out of me when I step on it and it downshifts and revs to 6500+! And a loopy idle is always nice, but it may make getting the heavy load to move from a dead stop more difficult much like the light flywheel did on the V6.

Any suggestions of the three cams for my application and any comments for others considering the Summit Racing® Pro LS truck cams for use with the T56?

Shimaze

I have a 2006 L33 5.3 that I am putting in a 2001 S10 Extreme. I am using the T56 with 3.73 gears. This is going to a daily driver that I plan to haul & tow light loads …not to exceed 2500lbs. I pulled my motorcycle & trailer with the stock 4.3 / 5-speed with a lightweight flywheel & stage 2 clutch with adequate results. The only issue was passing on the highway. I caused traffic jams when trying to pass semi-trucks at 60 MPH.

My question is: What is the difference in torque at 1500 to 2000 RPMs between the Stage 1 Drop In (SUM-8712), Stage 1 Hi-Lift (SUM-8719), & the Stage 2 (SUM-8701)?

I will be using the LS6 springs with either cams. I may also consider the Stage 3 truck cam (SUM-8713). I am also open to other cams, but I WILL NOT use anything other than a Summit Racing Pro LS Camshafts!

My concern is the very tall .50 overdrive 6th gear. My calculations are that I am going to be at 1708 @ 70 and 1952 RPMs @ 80 MPH with a 25.7” tire & 3.73 gears. I am going to need torque at those RPMs to move the truck on the highway. BTW - I will tow in 5th gear. For reference, my stock ’94 Z/28 5.7 LT1 did fine on the highway with the T56 & 3.42 gears and the same size tires.

I want to take advantage of the L33’s higher flowing LS6 heads (243/799) and the increased compression of the flat top piston (9.9 vs 9.5). But I am not interested in revving above 6200 RPMs so power below 6000 is my primary concern. The LS2 in my Trailblazer SS scares the bejesus out of me when I step on it and downshifts and revs to 6500+! And a loopy idle is always nice, but it may make getting the heavy load to move from a dead stop more difficult much like the light flywheel did on the V6.

Any suggestions of the three cams for my application and any comments for others considering the Summit Racing LS Pro truck cams for use with the T56?

Thanks, Shimaze