IgnitionMan, I was hoping I could get some advice on setting up my engine. Specs are
4.350 bore 4.25 stroke for 505 cu in.
Custom Wiseco pistons 13-1 comp.
GMPP rectangular heads- aluminum semi-open chambered (hence need for custom pistons)
Roller cam 258/268 at .050 .680/.700 on 110 centerline
Dart Intake
New holley dominator carb pn 8896 w/intermediat idle circuit.
MSD dist. and 7 series box.

I was wondering about whether or not to lock the dist. or maintain a mechanical advance. What would a good starting point for timing? If I should remove the power valves, or leave them be? And what would be a good starting point for jetting. This is not a street motor, but I don't want something that runs too poorly around the pits. Local track is about 700ft above sea level.

Thanks in advance for the help.
Babyrat

Sorry, but I don't think Ignition man posts here anymore. Someone correct me if I'm wrong.

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1971 Chevelle Malibu - 406 sbc TH350

Pictures of my '71 before I got it home (http://www.adam_nova.homestead.com/Untitled1.html)
Pics of my '71 after I got it home (http://www.adam_nova.homestead.com/Untitled2.html)
Picture of my 406 c.i. small block (http://www.adam_nova.homestead.com/engine.html)
Pictures of the frame, firewall and interior (in progress) (http://www.adam_nova.homestead.com/inprogress.html)
NEW UPDATED PICTURES (1/04/01) (http://www.adam_nova.homestead.com/inprogress2.html)

ENGINE INSTALL PICS!!! (http://www.adam_nova.homestead.com/engine_install.html)

BabyRat, if you think that he's the man with the plan, email me and I'll cut you in on how to get in touch with him.

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Francis Taracido Gold# 201
sniper0666@aol.com
History shows again and again how nature points out the folly of man.
Oh No! You Know She's Got To Go!
Go Go Quadzilla! <oo=+=oo>

Check out www.davessmallbodyheis.com (http://www.davessmallbodyheis.com) His email address is listed there....

Also, I-Man lurks around www.chevytalk.com (http://www.chevytalk.com) and throws in his .02 on occasion. Seems a lot milder since he left TC.

I truly miss the I-Man Defensive Pre-Emptive (and post-emptive) Strikes http://www.chevelles.com/forum/frown.gif. It was fun to watch the fur fly! (as long as it wasn't MY fur)

I'll probably get NAILED for saying this, especially since they've been so nice to each other lately, but we DO have Don and Ed http://www.chevelles.com/forum/biggrin.gif.

Plus the ever-returning Synth Wars and the Head Material Battles.

Can't forget about the unbridled and unabashed happiness and humor of Big Block Dave! http://www.chevelles.com/forum/tongue.gif

We even talk about Tech Stuff and Chevelles! And Chevolvos. Yes, this is a good place to be; a VERY good place. It's home.

Whimsically Yours,

Big O Dave

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God, Family, Country, Chevrolet... and Volvos with Small Blocks in them. To paraphrase the Chrismas carol:

"Oh what fun it is to ride with a HIDDEN Chevrolet!"

Just like a noisy family here at TC. We did stick to the issues though during our recent controversial discussions.

Mike

Many many many attractions here it TC.....were just like a big ol circus right Dave http://www.chevelles.com/forum/biggrin.gif

No Comment http://www.chevelles.com/forum/biggrin.gif

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Don Edmonds
T.C.Member 1033
1969 Chevelle
2000 Harley softail deuce
www.bottlerats69.homestead.com

Babyrat, I cant speak for Dave, but in the past his preferred setup for high cr/big cam drag stuff was lots of inital ( as much as can be allowed to crank it over ) and a short quick curve. Something on the order of 16-18 inital + 18 mechanical, setting total at between 34-36, or possibly more if the mill requries it.

The power valve on the secondary is almost academic on a drag car. Remove it and jet up +8. I ran a 750 dp on the street w/o secondary PV and saw no ill effects at all. Simply due to the fact that when I cracked the secs, i didnt do it "marginally".

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Gene Chaas
Gold Member 62/ACES 3112
67 SS 427 (http://www.chevelles.com/feature/october2000.html)
"Be big. Be a builder."

THIS TIME, Don, I promise I won't ask about the "No Comment." http://www.chevelles.com/forum/biggrin.gif We do have fun around here, don't we?

Big O Dave

Hey guys, thanks for the leads- maybee I will find the elusive IgnitionMan after all. http://www.chevelles.com/forum/smile.gif
I'm heading to the track on saturday, so hopefully I will be able to answer some of my own carb/jetting questions. I'll let you know how it went on Monday. http://www.chevelles.com/forum/biggrin.gif