Anyone rune a 220/220 cam in a 4.8???
May 1, 2008 | 08:42 AM
#1
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Anyone run a 220/220 cam in a 4.8???
Since I got a DD now, I was considering a TR220 @ 112 in my little 4.8.... Just wondering if anyone has experience runing it in a RC w/ a 4.8.... Mainly wanting to know general driving impressions, I will be doing the tuning so that wont be a problem...
Yes I know a converter will be needed, but it will be ordered after the cam install, that way I can have Greg at Phoneix transmission size it appropriately since they build all thier convertors in house per application...
Thanks
Corey
Yes I know a converter will be needed, but it will be ordered after the cam install, that way I can have Greg at Phoneix transmission size it appropriately since they build all thier convertors in house per application...
Thanks
Corey
Last edited by BlackGMC; May 1, 2008 at 10:46 AM.
May 1, 2008 | 09:05 AM
#2
i would think it would be fine, but probably wont pull any till after 3K rpm's
not much of a bottom end with a fairly large cam in a 4.8, without headwork and compression, but it should be fine for driveability. mine is smaller than that of course, but it drives excellent, like the stocker. i think that cam will be as big as you want for the supporting mods that you have, and should be good for 30+ rwhp.
not much of a bottom end with a fairly large cam in a 4.8, without headwork and compression, but it should be fine for driveability. mine is smaller than that of course, but it drives excellent, like the stocker. i think that cam will be as big as you want for the supporting mods that you have, and should be good for 30+ rwhp.
May 1, 2008 | 09:10 AM
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i would think it would be fine, but probably wont pull any till after 3K rpm's
not much of a bottom end with a fairly large cam in a 4.8, without headwork and compression, but it should be fine for driveability. mine is smaller than that of course, but it drives excellent, like the stocker. i think that cam will be as big as you want for the supporting mods that you have, and should be good for 30+ rwhp.
not much of a bottom end with a fairly large cam in a 4.8, without headwork and compression, but it should be fine for driveability. mine is smaller than that of course, but it drives excellent, like the stocker. i think that cam will be as big as you want for the supporting mods that you have, and should be good for 30+ rwhp.
Yep I am also considering one similar to yours but a high lift on 112. Comp cam custom grind 212/218 56X/56X @112+2 on XE lobes.... Both are proven, just doin some research...
May 1, 2008 | 11:20 AM
#6
it made power up to 6500 rpm on the dyno, i think peak was around 6200 ish. we ran it up just to see where it fell off, and it only fell around ~7 hp at 6500...so i set my shift point at 6400, to put me in a higher power band for the next gear. it really made a substantial difference.
with the correct A/FR, timing, and shift points, i gained 4 tenths in the 1/8th mile n/a. that was AFTER i had a guy try to tune it for me with the same cam in...i just went to a pro tuner that knew his ****. my converter will unlock at WOT at almost any speed, but is set to lock around 100 mph or so.
i made right around ~305-310ish rwhp with my setup n/a. i would probably stick with the same cam i have if i were to do it again, being that my LS6 spring were only $50... if you go up to .550+ lift, you are going to need some larger capacity springs. $$$
May 1, 2008 | 11:32 AM
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actually my friend, i would argue that the higher lift is not necessary on the 212/218 cam. mine is on a 114, for ease of tuning, but it still sounds great!
it made power up to 6500 rpm on the dyno, i think peak was around 6200 ish. we ran it up just to see where it fell off, and it only fell around ~7 hp at 6500...so i set my shift point at 6400, to put me in a higher power band for the next gear. it really made a substantial difference.
with the correct A/FR, timing, and shift points, i gained 4 tenths in the 1/8th mile n/a. that was AFTER i had a guy try to tune it for me with the same cam in...i just went to a pro tuner that knew his ****. my converter will unlock at WOT at almost any speed, but is set to lock around 100 mph or so.
i made right around ~305-310ish rwhp with my setup n/a. i would probably stick with the same cam i have if i were to do it again, being that my LS6 spring were only $50... if you go up to .550+ lift, you are going to need some larger capacity springs. $$$
it made power up to 6500 rpm on the dyno, i think peak was around 6200 ish. we ran it up just to see where it fell off, and it only fell around ~7 hp at 6500...so i set my shift point at 6400, to put me in a higher power band for the next gear. it really made a substantial difference.
with the correct A/FR, timing, and shift points, i gained 4 tenths in the 1/8th mile n/a. that was AFTER i had a guy try to tune it for me with the same cam in...i just went to a pro tuner that knew his ****. my converter will unlock at WOT at almost any speed, but is set to lock around 100 mph or so.
i made right around ~305-310ish rwhp with my setup n/a. i would probably stick with the same cam i have if i were to do it again, being that my LS6 spring were only $50... if you go up to .550+ lift, you are going to need some larger capacity springs. $$$
High lift, the TQ looks kinda funny thou...
Low lift, but in a 5.3, notice the flat TQ curve.
So maybe a low lift on a 112+2 LSA?? Any thoughts on that?
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May 1, 2008 | 11:41 AM
#8
I Wanna Say Mine Is 114 + 4, But Cant Remember For Sure. Are You Just Wanting To Lope Around And Make Power Too?
A Good Choice Either Way You Go, Imo... It Doesnt Take A Big Cam To Make Good Power. You Want More Power Under The Curve, Who Cares About A Peak Number? Good Useable Power Gets The Truck Moving And Keeps It Moving.
A Good Choice Either Way You Go, Imo... It Doesnt Take A Big Cam To Make Good Power. You Want More Power Under The Curve, Who Cares About A Peak Number? Good Useable Power Gets The Truck Moving And Keeps It Moving.
May 1, 2008 | 12:01 PM
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I Wanna Say Mine Is 114 + 4, But Cant Remember For Sure. Are You Just Wanting To Lope Around And Make Power Too?
A Good Choice Either Way You Go, Imo... It Doesnt Take A Big Cam To Make Good Power. You Want More Power Under The Curve, Who Cares About A Peak Number? Good Useable Power Gets The Truck Moving And Keeps It Moving.
A Good Choice Either Way You Go, Imo... It Doesnt Take A Big Cam To Make Good Power. You Want More Power Under The Curve, Who Cares About A Peak Number? Good Useable Power Gets The Truck Moving And Keeps It Moving.
Well I am wanting the lope and I want power more power under the curve... I totally aggree with you on the peak #'s, they mean nothing to me... But after reading the Cam Guide, it suggested that a lower LSA would bring the TQ in sooner, and also increase your DCR, which I think would create more power under the curve... looking at the 2 graphs I posted the low lift seems to be more power under the curve like I am wanting, The higher lift seems to be aimed more towards peak numbers, I think dropping the LSA on the low lift it will make it even better and give me the sound I am looking for...
May 1, 2008 | 12:07 PM
#10
My truck is at the shop right now getting the tr220 112lsa and supporting parts installed. I did alot of research and this cam was the one i found to be the best. I'm getting a custom dyno tune also. I should have the truck back next week and i'll keep you posted on the driveability and HP #s. I found that alot of people with the 212/218 like the cam, but eventually went bigger. I didnt want to have take the cam out and put a larger one in down the road.