My heads are of 1fstTA car (infamous pro performance heads) and i am running a custom FMS cam.
No times yet, hopefully i will have some on September 26th

 

My first post that caused an argument!! thats pretty cool. Anyways I want the best cam I can get now that will work well with ported heads later, I guess I'm looking for track times with stock heads and these certain cams, or other cams that people run that arent mentioned. Then maybe someone with the same cam and ported heads with times. thanks for the replies keep them coming, this is getting interesting.

 

my car ran a 12.7 @ 115 mph with a CC306, not even all boltons. Full weight, street tires.

 

are you guys all running 1.6 rockers with the 306, 847, and 230/236? what about injector sizes I've heard my stock should be good with just the cam change. Are these 3 cams the best out there and will I see approximately the same track times and hp #'s with any of them?

 

I'm running a cam smaller than 99% of the head/cam guys out there but have run the times in my sig IN 2350 DA. In good weather that would've been a 11.5x pass at 118+mph from a BABY Joe O. cam in a stalled auto. My car isn't some dyno queen or track queen either, as matter of fact before this spring I've only been to the track twice in my life. I'm sure with the right driver/track my car would've went 11.5x in bad weather. I also run where we have CRAPPY track prep. I'm also running on a mail order tune, stock tb, no electric waterpump, and an stalled auto(since mph means everything). Based on traction mph can change a few mph also so it doesn't always show HP. My heads/cam setup is matched right and thats why it runs as good as it does. I'm shooting to beat SAR's time this fall with my BABY cam and with good weather, the few bolts ons I have left, better tuning, and some better traction.

Now, can you find me another stalled auto heads/cam lt1 that runs a 11.7 at 116+mph n/a in sh*tty weather on stock bottem end.

Also, 12.7 @ 115 mph just shows a bad setup and no traction. MPH means nothing, et wins the races.

 

My next step was an LE2 package. The dyno and ets with head and cam packages from all porters seem to vary widely. I guess its a decision you have to make and a chance you take. On the LS1 forum there are two guys in the last week that have posted dynos less than 300 with heads and cams. So Im as confused as he!! When you add up the cost of the package plus other must have items, your looking at a fortune and may not see much gain. Good luck.

 

The gain is there to be had and if its not then something is wrong. I personally saw a 224/230 car with all the bolt ons run 15.3 at 94mph when stock cars run 14.2's at 99mph. Does that mean the cam is bad? Nope, it means something was wrong with the car.

 

Yes you can run 1.6 rockers with all 3. Just need to make sure the springs are up to the task.

The 230/236 is the mildest of the group. It wouldnt rev as high, and not make quite the power of the other two. Its the most streetable of the 3.

The 306, and the 847 are bigger cams, and will make similiar power. The trend seems to be shifting away from the 306 and torwards the 847 however. You can see what i did with the 847 and stock heads in the sig.

I am still on stock injectors, but they are about maxed. going to 30lbs wouldnt be a bad idea. Dont forget computer tuning too, its a must.

 

http://memimage.cardomain.net/member...58_45_full.jpg

Thats with mailorder tune. Hows that for nice looking torque curve I was happy with my XE230/236, some guys have hit 400rwhp with it, but most with lloyds heads are in the 383rwhp. Most guys like me didnt dyno tune it either, so we are leaving a few ponies on the table. i probably could have seen 390rwhp.

My suspension/rearend setup wasnt the greatest (stock rear and stock suspension). when i dynoed 368rwhp/336rwtq I ran 12.5 @ 114mph w/2.0 60'. I also had 3.73's, so if i had 4.10's (like most guys with 306 or 847 cam) I would have yielded another 1-2mph, plus my final numbers coming out to 383rwhp/353rwtq should have showed another 1-2mph. I wouldnt be shocked if this setup went 117mph. Oh well...I'll never know. Building my blown 383

 

hey atljar, 11.9 is sweet on that 847 cam only. Just wondering I live about 50 miles east of cincinnati and I go to tri state to race a couple times a year, I was looking at your pictures and noticed you go there to. I used to go to edgewater but having a convertible they wouldn't let me run in the 13's without a roll cage.. so I quit going there. If I go with the 847 cam and have problems since your not that far away maybe whoever tuned your computer or whatever else I might need you could help me out. I cant to 6000 grand launches with my auto but I can hopefully at least see low 12's cam only? Anyone have reasons why I shouldn't go with the 847?

 

Ya i run tristate and edgewater when i get the time. Lately its been more watching since i am trying to get a new combo together and thats been keeping me busy.

If you are going for max power, then the 847 will work very well. You are going to need gears and a good stall convertor in an a4 car as you loose low end torque. Other downside is that it likes to rev. Expect to shift at 6700 rpms or so, and that on a 4l60e is hell. If you do go this route, ill make sure you get it dialed in with the tune

 

how much do you think I will lose only cranking it to 6500 thats as high as I want to take the stock bottom end? What is the actual lift on an 847 with 1.5 rockers and with 1.6 rockers, I know the lift is more than the 306 but not sure how much? Same for the 306 what is the lift with 1.5 and 1.6 rockers? If im correct 847 is 112 degrees with 234/242, not sure about lift? And 306 is 112 degrees with 230/244, again not sure about the lift?

 

The 847 is 575/595 with 1.6 rockers, and 539/558 with 1.5

The 306 is 510/540 but i dont know if thats the 1.5 or 1.6 numbers, sorry. I would assume its the 1.5, which would make 1.6 544/576.

I have a stock head dyno graph on my webpage, you can see how it revs. If you dont want to spin it that high, you should look into another cam IMO.

 

Well it looks like theres a few guys that are cranking that high on the stock bottom end, so hopefully I'll be ok. Would the comp 986 springs be good enough for either the 306 or the 847?

 

also are both the 306 and 847 dowel pins correct for a 94 lt1 or will i need a shorter dowel pin.