Cam Suggestions?
03-12-2019, 02:34 PM
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Cam Suggestions? 
I’m planning on swapping a 5.3 out of a 2000 Silverado into my 98 Z28. The LS1 spun a bearing and I’ve got the 5.3 laying around so I figured I’d run it while I rebuild the LS1. I’m running 706 heads with springs upgraded to handle .600 lift and a professional products intake with everything else being stock. I bought a comp cams custom grind cam but I dont
know how much of a performance upgrade it will be so I was wondering if anyone had any suggestions on a better cam for my setup. Thanks.
03-13-2019, 05:47 PM
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That particular cam is huge by large if everything else is more or less stock and not a good fit. There are much better options out there. Tell us what you do with the car, the driveability you are looking for, and the gear converter etc. The intake is dated and there are some better options out there for not a lot of money if we could get that fixed up at the same time time.
03-13-2019, 06:12 PM
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Agreed! WAY too much cam for what you are doing. Summit won't steer you wrong. They have some new cams that will do a a good job for you.
03-13-2019, 09:14 PM
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That particular cam is huge by large if everything else is more or less stock and not a good fit. There are much better options out there. Tell us what you do with the car, the driveability you are looking for, and the gear converter etc. The intake is dated and there are some better options out there for not a lot of money if we could get that fixed up at the same time time.
03-13-2019, 11:15 PM
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So I’m looking to squeeze the most power out of it and still be somewhat of a daily driver. It’s got a stock converter and 2.73 gears. I got the intake brand new basically for free so I’d like to use it instead of having to buy another one. What cams do you think would work best for my setup?
Last edited by Summitracing; 03-13-2019 at 11:57 PM.
03-17-2019, 01:00 AM
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Ok, the Pro Ls Stage 1 Ghost cam p/n Sum-8715 would be a good choice, but the gear and converter are going to leave you less than happy with any cam you put in there out of the hole. If the gear/converter is locked in, our Sum-8713 222/231 112+ 5 is the best in terms of acceleration. The idle Is slightly stouter than the 8715 Ghost cam, but torque in the range where your converter stalls is improved. We think the cam will make you very happy. Of note, we added some great new 2800 and 3200 Made in the USA converters for your 4L60-e if you want to go quicker without the expense of converter efficiency. They are made by a manufacturer you wouldn’t ever expect at this price-point and are awesome in performance.
03-17-2019, 02:32 AM
#7
Our high lift hot cam would work well there and no need for gears OR converter. $499 for cam and springs. Great on budget for the ls1 rebuild.
Just remember that 5.3 is going to be nowhere near ls1 power.
And if you need parts for the ls1, our complete rebuild kits are $699 also :-)
Just remember that 5.3 is going to be nowhere near ls1 power.
And if you need parts for the ls1, our complete rebuild kits are $699 also :-)
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03-17-2019, 11:53 AM
#8
LS1 Intake manifold dyno testing
There are a lot of better choices that are budget friendly than the Professional Products/Speedmaster. It's on par with a factory TBSS intake. The TBSS and Dorman LS2 90mm flow similar amounts of air. I think either would work better on a 5.3 engine than the Professional Products in most applications.
Likewise, the 242/250 cam listed above is massive for a 5.3 LS with stock converter & 2.73's. In my humble opinion, a collection of mismatched parts unless it's for a 6.0/6.2 or bigger short block.
I think WS6 Store & Summit are suggesting the right direction.
The WS6 Store Hotcam 218/227 .600 lift would probably be pretty sweet in a 5.3 with 3,200 to 3,600 stall and maybe even a Dorman LS2 intake. Likewise, with the Summit cam.
There are a lot of better choices that are budget friendly than the Professional Products/Speedmaster. It's on par with a factory TBSS intake. The TBSS and Dorman LS2 90mm flow similar amounts of air. I think either would work better on a 5.3 engine than the Professional Products in most applications.
Likewise, the 242/250 cam listed above is massive for a 5.3 LS with stock converter & 2.73's. In my humble opinion, a collection of mismatched parts unless it's for a 6.0/6.2 or bigger short block.
I think WS6 Store & Summit are suggesting the right direction.
The WS6 Store Hotcam 218/227 .600 lift would probably be pretty sweet in a 5.3 with 3,200 to 3,600 stall and maybe even a Dorman LS2 intake. Likewise, with the Summit cam.
03-17-2019, 07:23 PM
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LS1 Intake manifold dyno testing
There are a lot of better choices that are budget friendly than the Professional Products/Speedmaster. It's on par with a factory TBSS intake. The TBSS and Dorman LS2 90mm flow similar amounts of air. I think either would work better on a 5.3 engine than the Professional Products in most applications.
Likewise, the 242/250 cam listed above is massive for a 5.3 LS with stock converter & 2.73's. In my humble opinion, a collection of mismatched parts unless it's for a 6.0/6.2 or bigger short block.
I think WS6 Store & Summit are suggesting the right direction.
The WS6 Store Hotcam 218/227 .600 lift would probably be pretty sweet in a 5.3 with 3,200 to 3,600 stall and maybe even a Dorman LS2 intake. Likewise, with the Summit cam.
There are a lot of better choices that are budget friendly than the Professional Products/Speedmaster. It's on par with a factory TBSS intake. The TBSS and Dorman LS2 90mm flow similar amounts of air. I think either would work better on a 5.3 engine than the Professional Products in most applications.
Likewise, the 242/250 cam listed above is massive for a 5.3 LS with stock converter & 2.73's. In my humble opinion, a collection of mismatched parts unless it's for a 6.0/6.2 or bigger short block.
I think WS6 Store & Summit are suggesting the right direction.
The WS6 Store Hotcam 218/227 .600 lift would probably be pretty sweet in a 5.3 with 3,200 to 3,600 stall and maybe even a Dorman LS2 intake. Likewise, with the Summit cam.
03-18-2019, 09:10 AM
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Once you get into a converter, you have a lot more options. Our Pro LS Stage 2 226/238 113 + 3 .600/.600 runs extremely hard in the 3000-7000 range and will carry power well up high so you can spin that 5.3 to make up for the displacement.
03-18-2019, 09:24 AM
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Once you get into a converter, you have a lot more options. Our Pro LS Stage 2 226/238 113 + 3 .600/.600 runs extremely hard in the 3000-7000 range and will carry power well up high so you can spin that 5.3 to make up for the displacement.
03-19-2019, 09:38 AM
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The newest 4L80E converters are $629.99 SUM-700343 for the 2600-2800 range. SUM-700342 for the 3000-3200 range.
The newest 6L80/6L90 converters are $639.99. SUM-700345 for the 2600-2800 range. SUM-700344 for the 3000-3200 range.
These converters have woven carbon lockup clutches, new impeller and turbine hubs, and custom stator, They also have anti-ballooning plates, heavy duty Torrington bearings and new pilot. Tig Welded too! We have them rated at 600whp. After that, we have a number of billet cover options available.
Last edited by Summitracing; 03-19-2019 at 10:00 AM.
