Ill be another week with my 347 in w9. Previous engine builder if you want to call him that threw me a curve ball. This motor has been a problem but we have them almost worked out. It is only a problem due to the NON ENGINE BUILDING ABILITIES of one Named Chevy Engine Builder.

Herb Jr

The cam I bought for my W8 engine was a comp grind with a 0.488" lobe lift with 275 @0.050". With the rockers I was going to use it was around 0.860"/0.780" gross valve lift.
It was to be a 346 cube engine with a peak around 8800-9000 RPM. I wanted a gring that would make power that I wouldn't have to throw valve springs at, otherwise I would have gone for something more aggressive.
AL...

How much power did it make?

What size exhaust are you guys running?

I never finished it Herb, plans changed and I bought a bunch of R5/P7 stuff instead. Still have some of the parts left over like the Weber Belt Drive, The cam, The Jesel lifters, CFE heads and Intake, Ti Valves, Bryant Crank etc. To be perfectly honest, my wants exceeded my wallet, I don't honestly think I could have afforded to race the darn thing and maintain it.
AL...

VC360,
That's close to what I'm thinking of going to for cam specs. I'm currently running the camshaft I ran with my W5 heads, a Bullet 276/282@ .050". Power is so flat and will rev to 8000. My engine sounds bigger than my buddys 632, I feel like the ex. Valve opens too early(77* BBDC), since the ex. Valve and port are larger and the headers are 3 step (26")with a short 4" collector and muffler. I feel like less duration is needed.I'm going to do something about the 3.55 gears too.

I just got one of those R5P7's on a trade. I'm going to call Rick Monday about what it needs.

heres some sound W5dart

http://www.youtube.com/watch?v=ueJtloRhUBI&feature=channel_page

http://www.youtube.com/watch?v=xIcbm_JQ8LM&feature=channel_page

What are the engine specs on your W5?

422, 4.100 bore x 4.0 stroke. 46cc chamber,2.18 intakevalve, 1.625 ex .085 piston to head around 13:1. Tall deck intake with 4500 flange. 1.875,2,2.125 header 26" long, collector 3.5 merge to 4" and 10" muffler. Will be limited per class to a .082 nitrous jet.

What block are you using & how high are you turning?

X block, on motor it will go through the 1/8th in second around 7500 with 3.55 gears went 6.80 at 108. Only made a couple passes. Went 5.88 at 122 at 6600 on a 250 shot. Need a gear and converter change.

Good info thankx

VC360, your pm box is full. I was going to ask how you ended up with the short duration camshaft and is it 264 on the exhaust also? How much rpm does it pull? I have a 262/262 with .700 lift I'm thinking of trying.

Kenny,
I got it together at the end of last week..fired it up Sunday night..might go out this Sunday and make some break end passes on it..

I had to wait 2 weeks on getting the intake back from some minor machining and wait for a new carb spacer...I would have been at the Chrysler Classic if all would of went well..but no big deal..

Good luck with it Chris.I plan on making a couple passes tomorrow night.Kenny

We trying to find out!