how large of a cam can I fit under my AFRs
03-28-2006, 07:57 PM
#1
how large of a cam can I fit under my AFRs Guys, I have a stock bottom on my motor, all the bolts ons.
I have a set of AFR 205s milled .20 off, and a stock Gm MLS gasket ( quench either .051 or.054 depending on who you ask)
Im thinking of switching out my Tr224 for a little larger cam.
How large can I go with the heads on without the valves making smilie faces on my pistons.
I have a set of AFR 205s milled .20 off, and a stock Gm MLS gasket ( quench either .051 or.054 depending on who you ask)
Im thinking of switching out my Tr224 for a little larger cam.
How large can I go with the heads on without the valves making smilie faces on my pistons.
03-28-2006, 08:18 PM
#2
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I know you can safely step up to an F13 112+4 with those specs. This is the cam I have and I went through AFR, Futral, TSP etc... finding out a sure safe max without having to flycut. You can probably go a little bigger but this is the only cam I researched since it's what I have.
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03-29-2006, 09:59 AM
#8
Originally Posted by PREDATOR-Z
LIFTS have little effect on PTV clearance.
What you have to watch are the valve events (VE's), durations and LSA.
What you have to watch are the valve events (VE's), durations and LSA.
You might as well measure it... to know for sure...
BTW, your greatest lift occurs after TDC once the piston is going back down the bore and pulling the charge in... At some point the intake valve is chasing the piston down. The issue becomes critical at the point where the valve is moving faster down the bore then the piston is. This "valve speed" is dependent on physical cam/lobe events. Your P to V will be at the worse somewhere after TDC... again I would just measure it and get as much cam as you can and not break the .080 intake rule… If you go a little too big (to close) just fly-cut a little for the difference…
03-29-2006, 03:02 PM
#9
That's the thing, I wanted to buy the cam that fits and have everything installed at once.
If I wait , measure, and then purchase, the process may be to long. Im happy being under a window, rather than over it and cutting.
My other question is, my corrent cam is a 224/ 224 .563 lsa 114. Will I gain much out of a cam that's maybe a 228/228 .588 ish on a 114
if its 10-15 RWHP gain. Ill leave in what I have
If I wait , measure, and then purchase, the process may be to long. Im happy being under a window, rather than over it and cutting.
My other question is, my corrent cam is a 224/ 224 .563 lsa 114. Will I gain much out of a cam that's maybe a 228/228 .588 ish on a 114
if its 10-15 RWHP gain. Ill leave in what I have
03-29-2006, 03:28 PM
#10
Going to a 228/228 114 cam over what you have won't gain you but 5 rwhp. If you want something that will fit and make lots more power and mid-range torque, try one of these: 223/227 .637/.639 110LSA (+0). New cam by Thunder Racing made specifically for use with ported heads and is intended to satisfy enthusiasts looking for the most possible power under the curve. The torque potential of this cam is insane! Very high dynamic compression. The duration at .200" is equivalent to a 230/234 Comp XE-R cam and you get even more lift! Just the ticket for those AFRs. I'm sliding this cam in my car very soon. Stay posted for the results.
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2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
2016 Corvette Z51 M7 Magnuson Heartbeat 2300 supercharger, TSP LT headers, Pat G tuned, 667rwhp, 662rwtq, 191mph TX Mile.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
2018 Cadillac Escalade 6.2L A10 Pat G tuned.
LS1,LS2,LS3,LS7,LT1 Custom Camshaft Specialist For custom camshaft help press here.
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2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
2016 Corvette Z51 M7 Magnuson Heartbeat 2300 supercharger, TSP LT headers, Pat G tuned, 667rwhp, 662rwtq, 191mph TX Mile.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
2018 Cadillac Escalade 6.2L A10 Pat G tuned.
LS1,LS2,LS3,LS7,LT1 Custom Camshaft Specialist For custom camshaft help press here.
Custom LSX tuning in person or via email press here.
03-29-2006, 04:13 PM
#11
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I just looked on Thunder Racing's website and didn't see this cam. (223/227 .637/.639 110LSA) It must not be on there yet 
. This is one I'm really interested in. I was going to do with TR224. I want the good power under the curve.
. This is one I'm really interested in. I was going to do with TR224. I want the good power under the curve.
03-29-2006, 04:25 PM
#12
Originally Posted by HeapaShifter
I just looked on Thunder Racing's website and didn't see this cam. (223/227 .637/.639 110LSA) It must not be on there yet . This is one I'm really interested in. I was going to do with TR224. I want the good power under the curve.
. This is one I'm really interested in. I was going to do with TR224. I want the good power under the curve.(sorry for the thread hi-jack)
03-29-2006, 04:56 PM
#13
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Originally Posted by Phil'sC5vette
That's the thing, I wanted to buy the cam that fits and have everything installed at once.
If I wait , measure, and then purchase, the process may be to long. Im happy being under a window, rather than over it and cutting.
My other question is, my corrent cam is a 224/ 224 .563 lsa 114. Will I gain much out of a cam that's maybe a 228/228 .588 ish on a 114
if its 10-15 RWHP gain. Ill leave in what I have
If I wait , measure, and then purchase, the process may be to long. Im happy being under a window, rather than over it and cutting.
My other question is, my corrent cam is a 224/ 224 .563 lsa 114. Will I gain much out of a cam that's maybe a 228/228 .588 ish on a 114
if its 10-15 RWHP gain. Ill leave in what I have
Haha hurry up!!!You've seen my posts and know i stepped up from the TR224 to the current cam in my sig and the car runs great both as a daily driver and weekend racer no regrets
03-29-2006, 06:55 PM
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Originally Posted by Phil'sC5vette
you have the set up I want. Did you have to cut your pistons ?
did you notice any differance between the 224 and the 228?
If I can stay in the country long enough, I plan the have the head installed may
did you notice any differance between the 224 and the 228?
If I can stay in the country long enough, I plan the have the head installed may
03-30-2006, 12:06 PM
#16
Originally Posted by MSGHUFF
No fly cutting. I did the cam and shaved the heads at the same time so i dont know which made the most, but it made a huge difference in the way the car feels!!! Hurry up and get them on!!!
