L76 swap to LS2
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L76 swap to LS2 What's up guys, I recently bought a L76 with 423 heads. I planned on putting a Howard rattler cam in anyway, should I just go ahead and get a LS2 oil pump or would the stock one work? Also would that complete the DOD/AFM delete besides electronically?
TECH Senior Member
Joined: Jun 2016
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From: Central Cal.
The main thing with DOD/AFM deletion is the lifters. At least change the "long" DOD lifters or all of them for best results. Also the ECM must be programmed to delete DOD/AFM. There is a kit available from many sources to do this. A site sponsor, WS6store.com, has all you need at very good prices. They will take care of all your LS engine needs. Your stock pump will be fine if it's in good shape. Otherwise a new pump will work.
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I seen on Texas speed about a 3 or 4 bolt conversion none of that is necessary ? Just the lifters and electronically deleted ? Texas offers the valley cover head bolts, etc, but my motor is in good condition and it has the 423 heads and I plan on swapping a camshaft anyway.
Those would be 823 heads.
For afm delete you need at least
Lifters and trays
Head gaskets
Head bolts
Exhaust manifold gaskets
Valley cover
Tune
The optional parts are
Valve cover gaskets
Coolant xover gaskets
Intake manifold gaskets
For vvt delete you need
Single bolt or 3 bolt cam gear (with bolts)
Ls2 Timing chain tensioner
Ls2 front cover
Water pump gaskets
Crank bolt
The optional parts are
Cam thrust plate
If you have both afm and vvt youll need a reg style oil pump
Timing chain is your call as its the ls2 chain anyway. replace if high miles. valve stem seals are the same way.
If you need help with any of that let us know.
For afm delete you need at least
Lifters and trays
Head gaskets
Head bolts
Exhaust manifold gaskets
Valley cover
Tune
The optional parts are
Valve cover gaskets
Coolant xover gaskets
Intake manifold gaskets
For vvt delete you need
Single bolt or 3 bolt cam gear (with bolts)
Ls2 Timing chain tensioner
Ls2 front cover
Water pump gaskets
Crank bolt
The optional parts are
Cam thrust plate
If you have both afm and vvt youll need a reg style oil pump
Timing chain is your call as its the ls2 chain anyway. replace if high miles. valve stem seals are the same way.
If you need help with any of that let us know.
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Thanks for the reply guys! But I plan on keeping vvt, and getting rid of dod/afm, but will the L92 valley cover w/o the pcv provision be necessary or just everything else, trays, lifters, valley cover etc?
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^ correct. Youll see "sloppy mechanics" use the orig valley cover but they dont tell you that it can leak and cause pressure loss. Most of the time youll see them running way to low oil pressure and they shrug it off. Ive tried it numerous times and you should ALWAYS use a non vvt valley cover when you can. Gen5 lt stuff is an exception.
The vvt isnt going to gain you as much as you expect though honestly. It is more $$ to delete it, but well worth it in my opinion and experience.
The vvt isnt going to gain you as much as you expect though honestly. It is more $$ to delete it, but well worth it in my opinion and experience.
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Joined: Jun 2016
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From: Central Cal.
The vvt is less reliable than a reg std cam setup. The vvt actuator relies on oil pressure. Since you are keeping vvt youll have to keep the filter under the valley cover to make sure there are no issues there. It can (and will) clog up. The secondary part is the phaser is fed by the special cam bolt/oil valve. Without a good seal there and proper oil pressure and volume it can fail also. Plus the electronic part of the vvt front cover assy as well. Lots of extra parts.
Trying to tune a vvt setup correctly takes an experienced tuner. Yes tsp can give you the info but that is only for locking out the phaser and positioning, not the actual cam tuning itself.
Your choice just giving all the facts. Ive had better luck removing both and going with a std cam vs any vvt setup even with hours more tuning.
Trying to tune a vvt setup correctly takes an experienced tuner. Yes tsp can give you the info but that is only for locking out the phaser and positioning, not the actual cam tuning itself.
Your choice just giving all the facts. Ive had better luck removing both and going with a std cam vs any vvt setup even with hours more tuning.