85Iroc

iTrader: (12)

I will be doing 1/8th mile drag racing only

346 sbe with flycut pistons
CNCd 799s milled .025
Edelbrock ProFlo XT w 90mm TB
Similar to chris1313 pro stock ram air

powerglide w/ 8" 5500 PTC converter
9" w/ 4.86 gear
275/60/15 radial

Cam ideas?

Darth_V8r

iTrader: (4)

what rpm you want to make peak power?

85Iroc

iTrader: (12)

I haven't thought about it. Whatever gets me down the track the quickest.

G Atsma

If it is "sbe" as indicated above, it better not rev TOO high.... lol

Darth_V8r

iTrader: (4)

OK. Then let me ask this -- what valves do you plan to use?
Edit -- rockers too?
Edit, Edit -- 91 or 93 octane in your area?

85Iroc

iTrader: (12)

Stock valves
Stock rockers with bronze bushing upgrade
93 octane

Oh and upgraded rod bolts lol, so not 100% sbe

Darth_V8r

iTrader: (4)

OK....

232/238-112+5. If you're willing to put lash caps on the valves, go to .654 lift intake and .637 exhaust. if no to lash caps, then .625/.608 lift. Use 5/16 x 080 pushrods minimum. You'll probably end up with btr dual plat 660 springs.

There's my $0.02

85Iroc

iTrader: (12)

Ok, full disclosure. I have a custom cam on the way from a reputable "guru", the specs were just a little different than what I was expecting with the single plane intake. I was expecting a little more duration, and LSA in the 108-110 range. Not that I don't trust his cam knowledge, I just expected something different from what I had been reading. What he spec'd was very similar to what you suggested. I currently have a 230/230, 111+3 cam in it, and expected something a little more drastically different than the current cam.

Thanks for the input!

Darth_V8r

iTrader: (4)

you were probably expecting more like 236/244-109?

RPM on the stock bottom end, and compression ratio in the mid 11's is why i picked what I picked. Bump the compression up to 12, and that kind of cam (big duration,tight LSA) makes more sense.

85Iroc

iTrader: (12)

Yes, and yes. I'm not sure if the cam is being ground yet or not, but if not, wonder if I can mill the heads more to bump the compression up?

I know SBC is a different animal, but my 355 had 10-10.5:1 compression and I had a 255/263 109 LSA solid roller in it that worked well. I did spin it to 75-7600 though.

Darth_V8r

iTrader: (4)

You could. You'd need to mill down to 57-58cc, which would require angle milling. With your intake, a mid 230's cam will rev into the 7600 range just fine.

85Iroc

iTrader: (12)

Guess I will just throw it in and see what she does at the track. Like I said, the guy that designed the cam knows his stuff, i just question if I will see over $450 worth of improvement over my current cam.

NEstyle

iTrader: (1)

What does he think the shift and trap RPMs are?

85Iroc

iTrader: (12)

He didn’t say, just gave operating range of roughly 4000-7300

00pooterSS

iTrader: (40)

Guess it depends on how fast you already are, the faster you are the more each tenth of ET costs

HioSSilver

iTrader: (8)

What's your et / mph goal?

85Iroc

iTrader: (12)

7.21 @ 95mph w 1.52 60’ in 95 degree heat is what I’ve been so far. Milled/valve job 241s and LS6 intake. I’m on a mail order tune from Pat G so will be getting dyno tuned after changes.

I’m wasting money because I’m pulling this out in a few months for a turbo deal but I want to get in the 6s, would love to get a 6.70 in good air. Worried I’m gonna lose 60’

HioSSilver

iTrader: (8)

Whats your car weigh?

Cwarta

iTrader: (12)

Pretty small can you have on the way along with the ones that have been recommended imo. My last cam was a 247/255 .650/.650 on a 111 with a bunch of thrown together garbage. Was much faster than the 230’s duration cam that was in it before.

85Iroc

iTrader: (12)

Weighs about 3280 w me in it.

Yeah I was expecting mid 240s duration and 108-110 LSA.