Well, your last run, assuming you could decently get the car out of the hole, was a potentially solid mid 12-second run. A potentially low 12-second run if you could really launch the car. A nice set of tires, some practice and a good (state of) tune should get you into the high 11's.

The timing chain breaking that soon may be a sure sign of something else amiss though. I realize the stockers aren't great, but that seems a little unreal....it's not like he revved it to the moon or that it is putting out gobs of power. I'd definitely step up though...it's not a part to skimp on.

 

My car went 11.70's ALL MOTOR and was a daily driver, and thats on the stock bottom end and with a baby cam. With the 383 he should have no problem getting a high 11 sec daily driver.

You REALLY need the driver mod, unless your track just sucks that much. Get some m/t dr's for one and get that 60ft DOWN.

Your current heads/cam should run deep 12's, but I think it'll be hard to get in the 11's. The le2 package should be good for 11.50's no problem with your stalled auto and the m/t drag radials.

I broke the timing chain on my 383/le2 setup last fall, and I only got two passes in, a 12.1 spinning like crazy, and then the 11.78. That was with a base tune, 255/50/16 m/t dr's, 3600 yank converter that locked at 5500rpms in 3rd and bogged me bad.

 

What psi were your tires at? You trapped 112 which is definetely good for low 12s you just need to work on the driving part. No way you shouldn't be able to hook with ET Drags. Your cam is fine, don't know what that one guy is smoking. 224/230 outperforms the CC305 all day long, it's also just able to sneak past emissions. And yes the 306 outperforms the 224/230, that's because it has about 10 degrees more intake/exhaust duration and a lot more lift.

My car rolled 330rwhp/337rwtq through a huge stall (would be 345rwhp on an M6) on stock heads with the 224/230. Is that not performing?

 

every time i came off the line with my foot on the floor, the tires would just spin. i started with 30 psi then 20 psi and then 18 psi. the tires were sitting in the sun and rain for 6 months without use. i dont know if that had any effect on them.
if 112mph is good for low 12's, then maybe i should just get better heads to match that cam. but if im going to tear it all down, might as well change the cam so that i wont have to go back and change it later. i want a solid 11 sec car so whatever will get me there for less money. i definitely need to PRACTICE my launching.

 

Call up Lloyd Elliot. www.eportworks.com He can do up a custom cam for you, just tell him what you want ! For about 1900 he can do the heads and cam. I got a custom grind, about like a GM847.... but with a lil more lift (can't give out the specs ) and have LE2 heads with comp bee hive springs and comp r lifters( a must) . This should net around mid 11's assuming a good 60' with traction!
Call him up, good guy. He works with Bret (sstrokerace) with the cams and I haven't heard one bad thing about them.

 

if i need to spend another $2500 for heads and other stuff to get to 11's when my current setup might be able to run that with less money, it might not be worth it to spend that much.

 

What did your heads flow?

When I first put my 383 together I used the same cam as you are using, with a 1.8 60 foot time I was hitting 12.5s and 12.4s. I then changed the cam to the GM 847 and ran an 11.9 the first time back out, my MPH went from 110 to 116 !!!

The 224/230 was not made for a stroker.

 

Before you just start throwing stuff back together....

There is nothing wrong with your combo. Head flow means squat without the proper setup.

You have an easy high 11 second combo there while being a daily driver when you work out the bugs.

Your combo is close to an old 11.7@116 combo I had...but you probably have better heads.

A smaller cam will work better with your stall and your gearing. Put a bigger cam in the car...need to send restall the tq...throw a 3.73 gear in it...then you have to address valve train issues...etc...

Your selling your current combo short...did you cover the basics? Fuel psi...check WOT under a load...afr, what is it? Your timing, what is it? How much KR? You don't have enough seat time to just jump to another combo when what you have is easily capable of doing what you want.

 

i dont think my heads are that good. i built this motor before i knew about this forum so i went by what the machine shop told me and calling manufacturers. the machine shop said they knew some guy that ported heads at his house for cheap. so i took them to him and had him port them. he had a flow bench but it wasnt working at the time. he used to work for a big performance shop before. he left the stock valves in there and i dont know how good his port work is. being 18 years old, i was pretty green with a this car stuff.

 

I ran stock valves also...don't sell yourself short.

 

CANTONRACER brings up a good point. Too many people are quick to ditch their combo if it does not come back with *unbelievable* numbers. It is much easier to sort through what you already have and get the most out of it than it is to change setups. Plus I believe that the guys making impressive numbers with what they have, have taken the time to sort through their combo, or they did it all right from the start.

 

will it help if i put 2.02" and 1.60" valves in there?

 

You need to take your heads somewhere and get them flowed, then report back.

 

"the cam gear and chain had less than 800 miles and crank gear had less than 6000 miles."

you never mix timing chain components new and used, you are just asking for trouble

 

any links to get that timing chain??