Cam for 5.3 on 87 octane? (L33)
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Cam for 5.3 on 87 octane? (L33) This is a daily driver that has an 80 mile round trip commute, I will not be feeding this car hi-test simply to **** it all out the tail pipes on my way to work. SO, if a cam will require it, I won't bother. I just figure seeing as the engine is still on a stand right now, why not throw a cam in it, even if it only nets me an extra 20hp or so? Has an LS6 intake, 1-5/8" long tubes and dual 2-1/4" exhaust.
If you want an aftermarket camshaft that will idle well, drive well, and give a nice little 30+HP or so gain, then I'd look at this from Lingenfelter:
http://www.lingenfelter.com/product/L210085297.html
http://www.lingenfelter.com/product/L210085297.html
Last edited by JakeFusion; Mar 11, 2017 at 10:16 PM.
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-edit- I just found something that says the LQ cam has 5deg more duration so it may not be a downgrade. I'll look into it more.
Last edited by 8.Lug; Mar 11, 2017 at 08:31 PM. Reason: breaking news
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If you want an aftermarket camshaft that will idle well, drive well, and give a nice little 40+HP or so gain, then I'd look at this from Lingenfelter:
http://www.lingenfelter.com/product/L210085297.html
http://www.lingenfelter.com/product/L210085297.html
Yeah. Look at the cam card. You can run GM springs with it too (LS9 would be preferred or Beehives). Also, the valve events @ .006 mean the IVC is 66.5 degrees. Now use that figure with the L33's 10.1:1 CR and the DCR is around 7.9:1 which works with 87 octane.
http://www.lingenfelter.com/PDFdownloads/L210085297.pdf
Also, the low overlap would make it drive like stock. You're just using more aggressive lobes and a better profile to make more power overall. Like I said, you'd probably see about 30HP more with this cam. Which is a nice little bump considering it'd drive exactly like stock. It'd pick up over any of the GM cams I think. And if your stock springs can do 90lbs seat pressure, you can reuse them it looks like.
http://www.lingenfelter.com/PDFdownloads/L210085297.pdf
Also, the low overlap would make it drive like stock. You're just using more aggressive lobes and a better profile to make more power overall. Like I said, you'd probably see about 30HP more with this cam. Which is a nice little bump considering it'd drive exactly like stock. It'd pick up over any of the GM cams I think. And if your stock springs can do 90lbs seat pressure, you can reuse them it looks like.
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Edit- L33 cam specs- 193/193 @.050, lift unknown
LQ9 cam specs- 196/201 @.050, lift .467/.479
One more edit- just for comparison, LM7 cam is 191/190, .466/.479, so L33 gains 2 and 3 degrees, not much, but enough to make a slight difference.
Last edited by G Atsma; Mar 12, 2017 at 05:49 PM. Reason: add cam specs
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I found a test on Hot Rod that says it has a bit less duration than what I found before but still shows a 20hp bump over the L33 cam at the top end. I'm liking that LQ idea. I'm finding them used for super cheap, I guess I just have to decide if that Ligenfelter cam is worth 4x as much for only 10-15hp.
Well you can look at these as well from Cam Motion or BTR - they are truck cams and designed to drop in (but similar price to Lingenfelter):
https://www.briantooleyracing.com/tr...age-i-cam.html
https://www.briantooleyracing.com/tr...ge-ii-cam.html
And here is a Cam Motion cam... picked up 41/22:
http://store.cammotion.com/53-l-325ci-95-compression-2
https://ls1tech.com/forums/dynamomet...hp-22rwtq.html
https://www.briantooleyracing.com/tr...age-i-cam.html
https://www.briantooleyracing.com/tr...ge-ii-cam.html
And here is a Cam Motion cam... picked up 41/22:
http://store.cammotion.com/53-l-325ci-95-compression-2
https://ls1tech.com/forums/dynamomet...hp-22rwtq.html
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The 210/218 cam was the " milk and cookies" of the cam test. Not only did it make great peak horsepower but it made great torque all through the power band. I would personally run this cam on a 550 lift. A 600 lift vs 550 lift isn't worth 10hp.... and the higher dollar valvesprings that'll be need to run a 600 lift plus camshaft.
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The 210/218 cam was the " milk and cookies" of the cam test. Not only did it make great peak horsepower but it made great torque all through the power band. I would personally run this cam on a 550 lift. A 600 lift vs 550 lift isn't worth 10hp.... and the higher dollar valvesprings that'll be need to run a 600 lift plus camshaft.
That was a good comparison of factory cams, but also proved that the aftermarket is still the source for the best performance cams.
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Yes the cam tested was around 550 lift... but they also offer a "high lift" version of the cam (same exact specs but different lifts) which isn't worth the extra stress on the vavletrain/wallet. Less maintenance in the long run is awesome.
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I stand corrected! Thanks! 10-4 on the maintenance aspect. Get that last 10HP somewhere else....
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10 hp is just a intake swap away.... if the op has hood clearance a tbss intake would be the choice of intake. Its the best cathedral intake GM ever made and cost pennies compared to Fast or MSD etc...
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Or use the Dorman LS2 or LS6 to improve on the LS1. The TBSS is good if you have the vertical clearance.
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This is a daily driver that has an 80 mile round trip commute, I will not be feeding this car hi-test simply to **** it all out the tail pipes on my way to work. SO, if a cam will require it, I won't bother. I just figure seeing as the engine is still on a stand right now, why not throw a cam in it, even if it only nets me an extra 20hp or so? Has an LS6 intake, 1-5/8" long tubes and dual 2-1/4" exhaust.
http://store.cammotion.com/53-l-325ci-101-compression-4