[colombianchulo07]

can i use them on a stock 2003 k20a2 head the block is stock just got a ported rbc mani and hytech headers and i do got injectors and fuel rail

 

[b20vtecallmota]

u will most likely need upgraded valvetrain like springs,retainers and make sure your pistons will have deep enough valve relief pockets.

 

[ralfspeed]

U can use them but they are design for high compRession pistons.. Obviously u would have to upgrade ur valve train... I would recommend stage 2 with a stock block..

 

[jon v]

you can use them... they may not be the best cams for your setup, and you may be limited in how much VTC you can run...

 

[EG6VtecR]

blue print stage 2 & 3 need updated valve train.
stage 3 will have valve to piston clearance issues with the factory pistons.
stage 3 are too big for the stock piston's compression.
i have a set of blueprint stage 2 that i'm willing to trade for stage3

 

[k20coupe]

I have them both the stage2 will be better for your setup

 

[Jay_Dee_Em]

If I have shelf Wiseco 12.5 pistons will they work? Or would I need custom pistons?

 

[k20coupe]

I use the ones blueprint sell they work great with a 2.4 block and a stage 3 cams

 

[Jay_Dee_Em]

I picked up some shelf Wiseco's from BP. 12.5:1 87.5 pistons and BP ultralite I beams yesterday...would this set up compliment the BP stage 3's well?

 

[k20coupe]

as long as you going to run a 2.4 will be a good setup check out my setup it has dyno sheets