finally got these puppies in the mail thanks to a great member here. got in touch with WEBCAM and they are a custom grind that isnt listed on their site. they sent me over the timing card. what i am wondering is if i need aftermarket valve springs as they seem pretty on par with Mori STG1 cams which i know are good to go with the stock springs. heres the specs

and for comparison here is the Moriwaki stg1 specs courtesy of tony's post
MORIWAKI:
IN::BTDC 22/ABDC 53/10.3/105.5 (255 deg. duration)
Ex::BBDC 53/ATDC 16/10.1/108.5 (249 deg. duration)



and for those of you without a conversion chart handy, the lift on both intake and exhaust cams is .405 inches so thats 10.287 mm. so about the same lift on the intake side as the moris and a little more lift on the exhaust side.

 

They say that stronger valve springs react better to higher cam profiles
havent seen any proof of gains with or without,but with turbo or nitrous applications stronger valve springs are needed to keep the valves closed under high boost conditions

 

Well really the aftermarket springs are just there to cope with higher lift and keep the valves from bouncing. Usually heavy duty springs have less coils giving more space between coils to prevent coil bind.

I just know that the Mori Stg1 cams are fine with the stock springs and since these seem so similar in spec, I'm thinking the stock springs will be fine

 

If you end up wanting to get some, there are some Moriwaki valve springs on eBay. Click here

 

As much as I love all things moriwaki for the VTR, I can get a set of high performance valve springs for $68 brand new from webcam. Makes me wonder where the STG2 cams that went with those springs ended up

Just realized they are being sold by Simon Kobe. I've bought stuff privately from him before. He's a great guy