Gen V big block valvetrain

[82ChevroletK20]

Im looking to put a different cam in the gen v big block im building. I was just wondering how much lift the stock valvesprings could handle or whether i should upgrade. Any info is appreciated

Thanks, Red

 

[Rickf]

The cam manufacturer should be able to recommend springs and related hardware.

 

[bucket]

The valve guides can only handle so much lift before they need cut down. It's also a non-adjustable valvetrain and converting that is another can of worms.

Besides that, the stock springs are good for a stock cam and nothing more.

 

[82ChevroletK20]

The valve guides can only handle so much lift before they need cut down. It's also a non-adjustable valvetrain and converting that is another can of worms.

Besides that, the stock springs are good for a stock cam and nothing more

Ive already converted the non adjustable valvetrain arp makes conversion studs

How much lift could i get away with before i run into the valve guides?

 

[TerColHan]

This series from Super Chevy deals with a L29, I didn't link the earlier one where the dumped the TBI for a carb because this is the one which deals with a cam swap but if you search for Super Chevy Big Hero BBC you can read the rest. All in all a pretty good read..

http://www.superchevy.com/how-to/en...power-on-a-junkyard-454-with-simple-cam-swap/

 

[82ChevroletK20]

This series from Super Chevy deals with a L29, I didn't link the earlier one where the dumped the TBI for a carb because this is the one which deals with a cam swap but if you search for Super Chevy Big Hero BBC you can read the rest. All in all a pretty good read..

http://www.superchevy.com/how-to/en...power-on-a-junkyard-454-with-simple-cam-swap/

Any idea whether that tolerance holds true for a gen v also?

 

[TerColHan]

I think the rotating assemblies about the same on the base engines so you'll still be limited on how much lift to run I think the biggest difference you'll have is which lifters to run. Gen 6 is factory roller but don't gen 5's still need retro-fit rollers?

 

[82ChevroletK20]

I think the rotating assemblies about the same on the base engines so you'll still be limited on how much lift to run I think the biggest difference you'll have is which lifters to run. Gen 6 is factory roller but don't gen 5's still need retro-fit rollers?

I want a hydrualic flat tappet

 

[TerColHan]

Then the cam listed in the article won't work for you, gen 5 upgrades are pretty limited by the stock configuration.

This build got pretty good results but they did a full rebuild and bumped up compresion to do it.
http://www.cpgnation.com/power-for-peanuts-gen-v-big-block-power/

This site offer some good advice for dealing with the limitations of a stock gen 5 and what can be gained on a budget without going to a roller setup.

http://tbichips.com/?page_id=87

or with one..

http://tbichips.com/?page_id=135