Atomic

iTrader: (42)

Anyone with experience with the valve size on a 408?

custm2500

iTrader: (10)

You have had the blower for a few weeks and now are building a 408! That is awesome! Good luck and can't wait to see it come togather.

black00chev

iTrader: (2)

I think it should be a fun combo, not too destructive on parts since you arent forcing the volume a 2300 would.

curious to see the outcome.

Atomic

iTrader: (42)

Yea me too... If the compression is too much, a .5 reduction is only a pair of headgaskets away.

Spoolin

iTrader: (8)

Subscribing for the results!! Best of luck!

Spoolin

iTrader: (8)

Oh and call Richard at WCCH already to answer your valve question. He doesn't bite!

Atomic

iTrader: (42)

Maybe not, but he sure doesnt always answer the phone

Atomic

iTrader: (42)

Just got off the phone with Dave (I think?) at WCCH, who was extremely helpful in answering some questions.

-The largest valve he recommended was 2.02/1.57 for a basically stock 317 head. For Valves he likes FI, and REV, although they are all pretty much the same (in theory anyway).

- Definitely recommended the dual springs over beehives.

- Appearently the LS2 and LS7 lifters are the same nowadays. Its what ill be using in any event.

- Recommended the stock rockers with a truinion upgrade if you want.

Also got my cam suggestion from Pat G, looks to be in the 220 range with near 0.600" lift on a 117 which should bring the DCR down enough to run some decent timing with the high SCR and boost.

Spoolin

iTrader: (8)

Yup, that would be Dave, he also knows his ****!!

1slow01Z71

iTrader: (36)

What kind of work are you going to get done to the heads?