Want to change cam....

cucho · 12-10-2003, 11:23 AM

Hii you guys im Julian the guy from mexico,ill be thinking to change my hyd. roller cam. I got 9:5 to 1 compresion, roush 180 cylinder heads ported 250 cfm intake at 550 lift and 190 cfm exhaust at 550 lift, single plane intake, msd ignition distribuitor, 6AL, 1 5/8 headers, 750 holley carb., roller rockers 1.6 ratio,and the cam that already have is a comp extreme energy with 224 in 232 ex duration at @.050, 555- 565 lift, 112 lobe center, advertised duration 274 in 282 ex.(part number 35-518-8)
And I want to change for other extreme energy this 232 in 240 ex duration at @.050, 565-574 lift, 112 lobe center, advertised duration 282 in 290 ex. (part number 35-522-8).
I use the car every day, ET 12.80 and 1.67 in the 60 fts.
I feel that the car need more duration at @.050.
What you guys think do you like that cam I accept other suggestions.
Thanks.

420nitro · 12-10-2003, 12:19 PM

Quote:

Originally posted by cucho
Hii you guys im Julian the guy from mexico,ill be thinking to change my hyd. roller cam. I got 9:5 to 1 compresion, roush 180 cylinder heads ported 250 cfm intake at 550 lift and 190 cfm exhaust at 550 lift, single plane intake, msd ignition distribuitor, 6AL, 1 5/8 headers, 750 holley carb., roller rockers 1.6 ratio,and the cam that already have is a comp extreme energy with 224 in 232 ex duration at @.050, 555- 565 lift, 112 lobe center, advertised duration 274 in 282 ex.(part number 35-518-8)
And I want to change for other extreme energy this 232 in 240 ex duration at @.050, 565-574 lift, 112 lobe center, advertised duration 282 in 290 ex. (part number 35-522-8).
I use the car every day, ET 12.80 and 1.67 in the 60 fts.
I feel that the car need more duration at @.050.
What you guys think do you like that cam I accept other suggestions.
Thanks.

Whats going on

I looked at your past messages to see all that you have, and noticed that you have a 306 ci engine with a cam of 224 &232 duration @.50. Thats pretty healthy for a 306! The flow #'s on your heads have great flow numbers for a street car. The only thing I see that concerns me is the size of your carb! Its huge for a 306 that shifts'only at 5500-6000 RPMS. If you can borrow a 600-650 doulble pumper carb (4150 style) you could pick up alot!!
I would not feel comfortable putting in a bigger cam. My first combo had a lot less cam, head and intake and went mid twelves with a 1.72 60 foot at 200 above sea level. You might be at the point where you have to much of something. Plus another great tool to have would be a "EGT". Help toon in you beast!

With the "EGT" you will know if your running lean or rich at the race track.
Good luck

420nitro · 12-10-2003, 12:23 PM

Another thing I forgot to mention is that the cam you have is also at the point where 9.5 to 1 comp. would be the lowest I would want, and going bigger will only hurt you more.

cucho · 12-10-2003, 08:29 PM

Hi 420nitro, thanks for the advised, but wath is a EGT, is the computer that you plug to the oxygen sensor. And im gone a tried with the 650 and i just put a weiand scoop the aluminium one, cause i dont have any air flow to the carb and maybe with the scoop im gone a run like 12.65 that be my guess and then maybe think in the cam if i needed, and other think im out of trany, its realy hard get a t5 here in mexico with this is my 3rd trany that i blow.

420nitro · 12-11-2003, 10:15 AM

Quote:

Originally posted by cucho
Hi 420nitro, thanks for the advised, but wath is a EGT, is the computer that you plug to the oxygen sensor. And im gone a tried with the 650 and i just put a weiand scoop the aluminium one, cause i dont have any air flow to the carb and maybe with the scoop im gone a run like 12.65 that be my guess and then maybe think in the cam if i needed, and other think im out of trany, its realy hard get a t5 here in mexico with this is my 3rd trany that i blow.

An EGT is a "exhust gas tempture guage". It reads how hot or warm the exhust is. Generally you want the exhust around 1,000 degrees even a little warmer if you're good with tuning. You take that reading at full throttle at the top of fourth gear. A safe limit would be in the 1,000-1,100 degrees F. Still look at your spark plugs to be safe. Some people even run hoter than that with good quaility parts. When I was running in the 12's I kept breaking T-5's as well. You can get either the "Z box T-5 trans, or a world class, or just end all the bull-sh*t and get the tremic trans. You mentioned its hard to get a trans down there, well try real hard on a strong piece so you dont have to do it any more.
Then after that you can smoke all those chevys and feel comfortable about your drive line.
Good luck and let me know how it ran with the 650 carb.!

cucho · 12-11-2003, 10:28 AM

Sure we keep in touch, and there is my e-mail jecucho@hotmail.com you can add me to the msn messenger and i can send you some videos that i have. Thanks for the advices maybe this weeekend i will go to phoenix arizona to find the trany. Oky

12-10-2003, 11:23 AM	#1
cucho Registered Member Join Date: Oct 2003 Location: Mexico Posts: 50	Want to change cam.... Hii you guys im Julian the guy from mexico,ill be thinking to change my hyd. roller cam. I got 9:5 to 1 compresion, roush 180 cylinder heads ported 250 cfm intake at 550 lift and 190 cfm exhaust at 550 lift, single plane intake, msd ignition distribuitor, 6AL, 1 5/8 headers, 750 holley carb., roller rockers 1.6 ratio,and the cam that already have is a comp extreme energy with 224 in 232 ex duration at @.050, 555- 565 lift, 112 lobe center, advertised duration 274 in 282 ex.(part number 35-518-8) And I want to change for other extreme energy this 232 in 240 ex duration at @.050, 565-574 lift, 112 lobe center, advertised duration 282 in 290 ex. (part number 35-522-8). I use the car every day, ET 12.80 and 1.67 in the 60 fts. I feel that the car need more duration at @.050. What you guys think do you like that cam I accept other suggestions. Thanks.

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12-10-2003, 12:23 PM	#3
420nitro Registered Member Join Date: Nov 2003 Location: Rockford Posts: 596	Another thing I forgot to mention is that the cam you have is also at the point where 9.5 to 1 comp. would be the lowest I would want, and going bigger will only hurt you more.

12-10-2003, 08:29 PM	#4
cucho Registered Member Join Date: Oct 2003 Location: Mexico Posts: 50	Hi 420nitro, thanks for the advised, but wath is a EGT, is the computer that you plug to the oxygen sensor. And im gone a tried with the 650 and i just put a weiand scoop the aluminium one, cause i dont have any air flow to the carb and maybe with the scoop im gone a run like 12.65 that be my guess and then maybe think in the cam if i needed, and other think im out of trany, its realy hard get a t5 here in mexico with this is my 3rd trany that i blow.

12-11-2003, 10:28 AM	#6
cucho Registered Member Join Date: Oct 2003 Location: Mexico Posts: 50	Sure we keep in touch, and there is my e-mail jecucho@hotmail.com you can add me to the msn messenger and i can send you some videos that i have. Thanks for the advices maybe this weeekend i will go to phoenix arizona to find the trany. Oky