Another cam question for the gurus
01-05-2002, 01:01 PM
#1
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Another cam question for the gurus I am looking at a cam with these specs:
.581 intake /.572 exhaust lift 224 intake / 230 exhaust duration on 114 LSA
wantin to put in A4, and will have custom PCM work done,
long tube headers and NO head work with Yank 3000 or 3200 or so
how ya think it will work?????
thanks
R
A
T
[ January 05, 2002: Message edited by: Ram Air Tony ]</p>
.581 intake /.572 exhaust lift 224 intake / 230 exhaust duration on 114 LSA
wantin to put in A4, and will have custom PCM work done,
long tube headers and NO head work with Yank 3000 or 3200 or so
how ya think it will work?????
thanks
R
A
T
[ January 05, 2002: Message edited by: Ram Air Tony ]</p>
01-05-2002, 01:10 PM
#2
Re: Another cam question for the gurus Greetings Mr Tony. I knew you would find the cam gurus here <img src="gr_images/icons/wink.gif" border="0">
I like the aggressive lift on that cam, but you better make sure piston/valve clearance is okay with that much. Good valvesprings are a must as well, and that increased lift will fatigue them sooner than anything.
No need for that much split in the duration, especially since you are going to have headers on the car. When we did tons of dyno testing to develop the T1/B1 cams, we found that extending the exhaust duration past 221 netted no gains on a car with headers and only made the idle worse and the computer set more SES lights. 224 intake duration is about the biggest I'd go with a 346ci LS1 motor.
Just my $0.02 <img src="gr_grin.gif" border="0">
Tony
I like the aggressive lift on that cam, but you better make sure piston/valve clearance is okay with that much. Good valvesprings are a must as well, and that increased lift will fatigue them sooner than anything.
No need for that much split in the duration, especially since you are going to have headers on the car. When we did tons of dyno testing to develop the T1/B1 cams, we found that extending the exhaust duration past 221 netted no gains on a car with headers and only made the idle worse and the computer set more SES lights. 224 intake duration is about the biggest I'd go with a 346ci LS1 motor.
Just my $0.02 <img src="gr_grin.gif" border="0">
Tony
01-05-2002, 01:16 PM
#3
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Re: Another cam question for the gurus thanks for that info Nine....interesting on the exhaust duration <img src="gr_grin.gif" border="0"> .....
damn the choices <img src="gr_eek2.gif" border="0"> hehehe
thanks
R
A
T
ps....just was reading the other cam topic close to the top...dAYUM there is ALOT of **** to consider!!!!!!!!
damn the choices <img src="gr_eek2.gif" border="0"> hehehe
thanks
R
A
T
ps....just was reading the other cam topic close to the top...dAYUM there is ALOT of **** to consider!!!!!!!!
01-05-2002, 01:20 PM
#5
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Re: Another cam question for the gurus Hammer my man <img src="gr_stretch.gif" border="0">
this is for the TA.....considering lots of choices....just want to make max power in A4 with no head work right now....
talkin to LG and his son's car has this cam and I am gonna go listen to it....also, if I dont like the cam, they will put another in it for cheap <img src="gr_grin.gif" border="0">
on a side note....still LOVIN that HAMMER cam in the RAT III.5 (Z06 <img src="gr_eek2.gif" border="0"> )
thanks
R
A
T
this is for the TA.....considering lots of choices....just want to make max power in A4 with no head work right now....
talkin to LG and his son's car has this cam and I am gonna go listen to it....also, if I dont like the cam, they will put another in it for cheap <img src="gr_grin.gif" border="0">
on a side note....still LOVIN that HAMMER cam in the RAT III.5 (Z06 <img src="gr_eek2.gif" border="0"> )
thanks
R
A
T
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01-05-2002, 11:59 PM
#8
Re: Another cam question for the gurus [quote] better make sure piston/valve clearance is okay with that much. Good valvesprings are a must as well, and that increased lift will fatigue them sooner than anything.
<hr></blockquote>
With the heads milled 30 thou, there is plenty of P:V clearance, so much, that on a 3-2 mis-shift, it didnt bend valves...*cringes*. The new 918s will work fine, along with some 4130 pushrods.
[quote] No need for that much split in the duration, especially since you are going to have headers on the car. When we did tons of dyno testing to develop the T1/B1 cams, we found that extending the exhaust duration past 221 netted no gains on a car with headers<hr></blockquote>
On the contrary! the LSx cars LIKE like a split pattern cam. The single pattern cam works great, but if you have 2 differnt ports, why would you not taylor the cam lobe to that port??(i.e. intake is not the same as the exhaust) on all of our testing, a split pattern cam made more power and torque. The lope is not to harsh, and my PCM has never, NEVER been out of the car and it responded fine.
Tony, I will not be at the office until about 4:00 on monday. I know that you scheduled to talk with my dad on mon. but If you would like to hear my car, 4:00 would be best. Drop me a line, and mabe we can work somthing out so that you can hear it if mon. does not work out. PLUS, if you dont like it, pick a cam, hammer, T1, B1, and we said that we would do the swap cheap!!
-Louis
[ January 06, 2002: Message edited by: G2 LS1 ]</p>
<hr></blockquote>
With the heads milled 30 thou, there is plenty of P:V clearance, so much, that on a 3-2 mis-shift, it didnt bend valves...*cringes*. The new 918s will work fine, along with some 4130 pushrods.
[quote] No need for that much split in the duration, especially since you are going to have headers on the car. When we did tons of dyno testing to develop the T1/B1 cams, we found that extending the exhaust duration past 221 netted no gains on a car with headers<hr></blockquote>
On the contrary! the LSx cars LIKE like a split pattern cam. The single pattern cam works great, but if you have 2 differnt ports, why would you not taylor the cam lobe to that port??(i.e. intake is not the same as the exhaust) on all of our testing, a split pattern cam made more power and torque. The lope is not to harsh, and my PCM has never, NEVER been out of the car and it responded fine.
Tony, I will not be at the office until about 4:00 on monday. I know that you scheduled to talk with my dad on mon. but If you would like to hear my car, 4:00 would be best. Drop me a line, and mabe we can work somthing out so that you can hear it if mon. does not work out. PLUS, if you dont like it, pick a cam, hammer, T1, B1, and we said that we would do the swap cheap!!
-Louis
[ January 06, 2002: Message edited by: G2 LS1 ]</p>
01-06-2002, 09:26 AM
#9
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Re: Another cam question for the gurus thanks again for all the input guys.
ls1fun........brutha....ya know me TOO well <img src="gr_stretch.gif" border="0"> <img src="graemlins/gr_cheers.gif" border="0" alt="[cheers]" />
Louis.....yeah I would like to take a listen to your car with that cam .....so I will try to be there at 4 PM instead of 10:30 AM .... tell your Pops for me <img src="gr_grin.gif" border="0">
thanks
R
A
T
ls1fun........brutha....ya know me TOO well <img src="gr_stretch.gif" border="0"> <img src="graemlins/gr_cheers.gif" border="0" alt="[cheers]" />
Louis.....yeah I would like to take a listen to your car with that cam .....so I will try to be there at 4 PM instead of 10:30 AM .... tell your Pops for me <img src="gr_grin.gif" border="0">
thanks
R
A
T