AFM/DOD Delete, Cam, Headers, Intake, Tuning Info Needed

Tech discussions on the L77 6.0L V8.
Pursuit
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Re: AFM/DOD Delete, Cam, Headers, Intake, Tuning Info Needed

Post by Pursuit » Mon Jan 06, 2020 3:50 pm

Walt,
Our stock converter and the aftermarket converters will have the ability to lock up at cruising speeds to avoid the slipping. Just make sure that your tuner addresses the new higher stall converter and adjusts for the new stall speeds. You gotta love modern technology!

Maurice
Maurice Sheil

mhsheil@gmail.com

2011 Caprice Phantom Black 9C3
2012 Impala 9C1
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1996 GMC Sierra C1500
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Oldblue68chevy
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Re: AFM/DOD Delete, Cam, Headers, Intake, Tuning Info Needed

Post by Oldblue68chevy » Mon Jan 06, 2020 9:10 pm

Due to the lack of adjustability at the rocker like an old small block. You need to verify the pushrod length is correct so the preload on the lifter is correct. Thats why comp is saying it needs to be checked.

There are several ways to do it but i think the most accurate way is with an adjustable pushrod tool. The comp brand one is about 20 bucks so its not to bad. Do a quick search on the internet and you will find a few videos and write ups about it.
2011 PPV 9C3

Capeasy
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Location: Downey, CA.

Re: AFM/DOD Delete, Cam, Headers, Intake, Tuning Info Needed

Post by Capeasy » Mon Jan 13, 2020 4:35 am

Thanks O'lblue68, so aren't they hydraulic allowing a bit of leeway? And is there some standard pushrod lengths available for are motors or are the machines to the exact length we call out?.
Walt (AKA:Capeasy) So. Cal.
2013 Caprice 9C1, 98K, Huron white, Spectra CAI, 3.45 Diff. BlackWidow Venom exhaust, Pedders coilovers, Blackbear tune.

CrashTestDummy
Posts: 2011
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Location: Pearland, Texas

Re: AFM/DOD Delete, Cam, Headers, Intake, Tuning Info Needed

Post by CrashTestDummy » Mon Jan 13, 2020 4:01 pm

Capeasy wrote:
Mon Jan 13, 2020 4:35 am
Thanks O'lblue68, so aren't they hydraulic allowing a bit of leeway? And is there some standard pushrod lengths available for are motors or are the machines to the exact length we call out?.
Some cam manufacturers simply regrind existing cams. Also, some more-radical cam profiles end up cutting down the base circle to achieve the wanted profile. You can only fit so much cam lobe into the engine to clear the bearings, so if you want more lift, you'll have to cut the base circle down more. They can be cut down more than the 'leeway' will compensate for.

So it's best to verify the required length while you have the engine apart and get pushrods that fit, vs. discovering they're too short after you get the engine back together and refilled with oil/coolant.

You can get adjustable rockers, but they're not cheap, and you may still not be able to reach the base circle, dependin on cam vendor and grind.
Gene Beaird,
Pearland, Texas
2012 Caprice 9C1
1992 B4C 1LE Camaro
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