Quote:
Originally Posted by oldskool
Hi Brent. I'm not new by any means, but new to the site. Just joined today. But I've been reading some stuff on here for a while. Your Bird build thread caught my eye, cause we use to run a '68 E/SA. But back then, they were about 2 seconds slower than the top cars are today.
I'm trying to piece together what has changed to make these cars so much quicker now. I've seen some of the rule changes, like forged rods and pistons.
And the cams that are allowed now are really radical compared to the Lunati we ran. I see from your build that you are running a converter with over 4000 stall. With our cam a 3000 was plenty.
Anyhow I have a lot of questions about your build and the current rules and such. Since racing season is over, I was hoping you may have time to share some info with me.
But I realize that most guys are busy and some don't like to share with strangers. So, if you'd rather not do it, I understand completely and have no hard feelings.
If you'd rather not, then could you possibly recommend one or more Pontiac guys on here that might be willing to share some Stock class info with me. I don't need any super secret stuff, just the basics it takes to get a Pontiac Stocker to run just barely under it's index.
Hey, thanks for listening. And congrats on your progress so far.  |
My build is pretty basic, with some attention paid to detail... if it werent, there is no way that the stuff that i have would run under the index at all...hehe
I dont mind posting what i have, since im not worried at all about class runoff's or heads up races. I wont see a National event, unless it would be Norwalk. Indy is out of the question, since im not running atleast .9 under. If anything, itll show people that you dont need to spend 10k to run under. I did build it myself and did some of the prep myself, so that saved some money.
Hope this gives you some insight:
I have a set of used Venolia #400 pistons +.040 over. Stocker torque plate hone, back cut 2nd ring, low tension oil rings, Eagle rods(chevy ends) 6.635( legal), Harts in Cecil Ohio did my crank, .013 offset ground, pistons down .005 in the hole, Running the race chevy rod bearing, full groove mains, clearances .0035, 60LB pump, crank scraper, no tray, factory baffled pan, with plate welded on rear, so oil wont climb it on launch. Cam is .424/.424 251/256* on 108LSA, in at 105 ICL... heads are down to 65cc with good valve grind, 45* seats, Ferrea Valves and COmp springs 160/340 at 1.675 I.H.
As far as the converter goes, Stockers nowadays need lots of converter, since we allowed to run durations, similar to small roller cams...Im actually pretty happy with the way the engine performed this year, as it really doesnt have crazy valvetrain components, such as limited travel lifters, or ceramics, for that matter, and not running crazy spring pressures(yet), and a really mild cam, as far as Stockers go. Wanted to keep things sort of simple, just to get the car out on the track with a new combo and make lots of passes. 91 on it so far. Gonna step it up a bit, next season, with 2.75 low gear, light drum, well prepped 350 trans, bigger cam, more spring pressure, limited travel lifters, and most likely more stall speed. I hope to see some sub 11.20 passes by seasons' end. I wont make all the changes at once...
My chassis is proven, and dialed in with a 10.80 bracket engine, so i wasnt fighting the gremlins, there. Also would like to add, i've been given alot of valuable advice, along the way, by some fellow Pontiac Stocker racers, and Chevy guys, too... I figured everyone would be alot more secretive, but found that everyone is willing to help, where they can. I , as much as anyone, would hate to see this side of the sport die out...I imagine that is part of their motivation...Without their help, i may have not run .26 under , my 1st attempt..