Futral F13 cam specs?
08-14-2004, 02:11 PM
#21
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Originally Posted by PREDATOR-Z
The degrees of advance in a cam grind are there for a reason. Personally I wouldn't mess with a cam ICL as it will perform totaly different than the original grind.
A 112+4 has 4 degees advance in the grind to make the cam peak a little earlier in the powerband in order not to loose so much torq down low. A 111 ICL FM13 will be a dog on low torq and driveability will suffer.
But on the other hand, if you want to mess with the advance, all you have to do is get an adjustable timing chain and retard the FM13 4 degrees at the crank and voila.
Don't mess with a designed grind
A 112+4 has 4 degees advance in the grind to make the cam peak a little earlier in the powerband in order not to loose so much torq down low. A 111 ICL FM13 will be a dog on low torq and driveability will suffer.
But on the other hand, if you want to mess with the advance, all you have to do is get an adjustable timing chain and retard the FM13 4 degrees at the crank and voila.
Don't mess with a designed grind
08-14-2004, 04:48 PM
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You know…I do seem to recall that Futral does sell a FM13 that has a 109 ICL with an 111LSA.
My point in the first post was that as the ICL goes lower the P-V clearance becomes less.
My point in the first post was that as the ICL goes lower the P-V clearance becomes less.
08-14-2004, 05:54 PM
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Originally Posted by JS
Icon are your pistons notched and how far are your heads milled?Damian what is the LSA/ICL of your F13 and how much milling was done to your heads?
I have a milled (.030) head and 2.02/1.57 valves but I dis have the pistons notched in case I needed alittle room.Currently I run a 224-224 580-580 113+2 w/no problems.I was thinking of getting the F13 on a 112+2?
I have a milled (.030) head and 2.02/1.57 valves but I dis have the pistons notched in case I needed alittle room.Currently I run a 224-224 580-580 113+2 w/no problems.I was thinking of getting the F13 on a 112+2?
08-14-2004, 06:05 PM
#26
Originally Posted by PREDATOR-Z
A 111 ICL FM13 will be a dog on low torq and driveability will suffer.
I wouldn't go so far as to say it will be a dog on low end. Sure, the torque curve will move up the RPM band a bit, but if you have enough gear (like you're supposed to with big cams) then you won't even notice it.
FWIW, I have the F13 on a 113+4 but when I checked P-V clearance it was a little tight. It was like .060" on the intake side. So I retarded it 2* to a 111icl and got to .080". The HP still peaks at 6400 and TQ at 4900. I didn't notice any difference down low over the TR224 cam either.
08-14-2004, 06:42 PM
#27
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Originally Posted by JNorris
You know…I do seem to recall that Futral does sell a FM13 that has a 109 ICL with an 111LSA.
My point in the first post was that as the ICL goes lower the P-V clearance becomes less.
My point in the first post was that as the ICL goes lower the P-V clearance becomes less.
08-14-2004, 06:48 PM
#28
Originally Posted by SportSide 5.3
wish they would get their site back up and workin. i'd like to look at some of there shelf cams and other parts.
thanks jrp
08-14-2004, 08:20 PM
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i am really considering this cam for my 04 Zo6. how would it do mated to some absolute or TEA 2.5 ls6 heads? what kinda of numbers should i expect with all the typical bolt ons on a ls6 intake? i want something with some nice power but doesn't become a PIA to drive and doesn't kill the springs.
08-14-2004, 08:29 PM
#31
Originally Posted by algws6
i am really considering this cam for my 04 Zo6. how would it do mated to some absolute or TEA 2.5 ls6 heads? what kinda of numbers should i expect with all the typical bolt ons on a ls6 intake? i want something with some nice power but doesn't become a PIA to drive and doesn't kill the springs.
cam similar to the FM13
08-14-2004, 10:19 PM
#35
Then it was Gomer,One of u guys has it on a 112+2 
So with my .030 heads and 2.02/1.57 valves along with a notched piston could I run the cam with say a 112+2 Damian or would u suggest something else?I like the looks of this cam and I think I'll get 15RW from 4000 up to redline.
So with my .030 heads and 2.02/1.57 valves along with a notched piston could I run the cam with say a 112+2 Damian or would u suggest something else?I like the looks of this cam and I think I'll get 15RW from 4000 up to redline.
08-14-2004, 10:19 PM
#36
Originally Posted by algws6
that is exactly what i was looking for. what are the specs of that cam?
08-14-2004, 10:21 PM
#37
Originally Posted by Damian
JS you are incorrect. My FM13 is not on a 112+2.
My cam is a 114 LSA, 113 ICL. Yes, it will provide more clearance being higher in ICL.
My cam is a 114 LSA, 113 ICL. Yes, it will provide more clearance being higher in ICL.
114lsa 114 icl to deal with your cyl. pressure issues. 
08-14-2004, 10:33 PM
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Originally Posted by PREDATOR-Z
The degrees of advance in a cam grind are there for a reason. Personally I wouldn't mess with a cam ICL as it will perform totaly different than the original grind.
A 112+4 has 4 degees advance in the grind to make the cam peak a little earlier in the powerband in order not to loose so much torq down low. A 111 ICL FM13 will be a dog on low torq and driveability will suffer.
But on the other hand, if you want to mess with the advance, all you have to do is get an adjustable timing chain and retard the FM13 4 degrees at the crank and voila.
Don't mess with a designed grind
A 112+4 has 4 degees advance in the grind to make the cam peak a little earlier in the powerband in order not to loose so much torq down low. A 111 ICL FM13 will be a dog on low torq and driveability will suffer.
But on the other hand, if you want to mess with the advance, all you have to do is get an adjustable timing chain and retard the FM13 4 degrees at the crank and voila.
Don't mess with a designed grind
I 100% agree!!!!
08-14-2004, 10:33 PM
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Originally Posted by JS
Then it was Gomer,One of u guys has it on a 112+2
So with my .030 heads and 2.02/1.57 valves along with a notched piston could I run the cam with say a 112+2 Damian or would u suggest something else?I like the looks of this cam and I think I'll get 15RW from 4000 up to redline.
So with my .030 heads and 2.02/1.57 valves along with a notched piston could I run the cam with say a 112+2 Damian or would u suggest something else?I like the looks of this cam and I think I'll get 15RW from 4000 up to redline.
