GrandAM cam?
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From: Phoenix, AZ USA
GrandAM cam? Has anyone ever actually TRIED the GM GrandAM cam in a 346?
the specs are:
Duration = 239/251 @ 0.050" (294/306 advertised)
Lift = 0.570"/0.570"
LSA = 106
with an RPM range of 4000-7000
the LG Motorsports G5X2 cam is:
Duration = 232/240 @ 0.050"
Lift = 0.595"/0.609"
LSA = 112LSA
I would think the extra duration would make some crazy HP (no torque) and the lower lift should make valve springs last. The only thing I question is what RPM would a person have to run to make this thing not die at ever stop light?
With the 106 LSA it should THUMP even at 1000RPM idel
and with a 11.5:1 - 12.0:1 CR it should be "somewhat" better of an idler.
the specs are:
Duration = 239/251 @ 0.050" (294/306 advertised)
Lift = 0.570"/0.570"
LSA = 106
with an RPM range of 4000-7000
the LG Motorsports G5X2 cam is:
Duration = 232/240 @ 0.050"
Lift = 0.595"/0.609"
LSA = 112LSA
I would think the extra duration would make some crazy HP (no torque) and the lower lift should make valve springs last. The only thing I question is what RPM would a person have to run to make this thing not die at ever stop light?
With the 106 LSA it should THUMP even at 1000RPM idel
and with a 11.5:1 - 12.0:1 CR it should be "somewhat" better of an idler. 
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Originally Posted by 2001CamaroGuy
Has anyone ever actually TRIED the GM GrandAM cam in a 346?
the specs are:
Duration = 239/251 @ 0.050" (294/306 advertised)
Lift = 0.570"/0.570"
LSA = 106
with an RPM range of 4000-7000
the LG Motorsports G5X2 cam is:
Duration = 232/240 @ 0.050"
Lift = 0.595"/0.609"
LSA = 112LSA
I would think the extra duration would make some crazy HP (no torque) and the lower lift should make valve springs last. The only thing I question is what RPM would a person have to run to make this thing not die at ever stop light?
With the 106 LSA it should THUMP even at 1000RPM idel and with a 11.5:1 - 12.0:1 CR it should be "somewhat" better of an idler.
the specs are:
Duration = 239/251 @ 0.050" (294/306 advertised)
Lift = 0.570"/0.570"
LSA = 106
with an RPM range of 4000-7000
the LG Motorsports G5X2 cam is:
Duration = 232/240 @ 0.050"
Lift = 0.595"/0.609"
LSA = 112LSA
I would think the extra duration would make some crazy HP (no torque) and the lower lift should make valve springs last. The only thing I question is what RPM would a person have to run to make this thing not die at ever stop light?
With the 106 LSA it should THUMP even at 1000RPM idel
and with a 11.5:1 - 12.0:1 CR it should be "somewhat" better of an idler.I have it. Idles at 1200 RPM....decent lope. Street only...never been to the track. Stock bottom end LS6....only spin it to 6700 RPM. 6700 RPM leaves alot on the Table. Running the SDPC LS6/LPE heads 58.5 cc chambers with about 11.5 CR.
Above 3500RPM it absolutely screams. Still playing with the "Tune"...eventually I get it dynoed and move to a forged bottom end. I hope to run "One Lap " with it .....2005 ( by then I'll probably go to a more aggressive setup)? FWIW.
joel
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Originally Posted by J-Rod
Binks. Look at the GM computer. I thas the tune for that cam already done. Or talk to LGM. They have tuned several cars with this cam.
I have the ASA tune from Dave Farmer . ASA Tune-Timing is setup for 2000 (or earlier) heads ...too much for my setup. VE is stock 2000 Vette.
I asked Godspeed ( Jeremy) to help me out several times - he said "send me your file"- I did, and I never heard from him again.NoGo has been a Godsend (Pun intended). He is the man. NoGo has helped me alot....Great teacher!
I pretty much have it tuned except a recurrent drop in timing and AFR at 2500, 3000 and 3500 RPM - when held at constant RPM, TP% etc. It's not Cat Overtemp but very similar......I'm going to try to get a lot of VE data this weekend for ChrisB and NoGo's VE tuning.....I'm hoping this improves my transition to idle.
Interestingly - Before I pulled my 2001 Z06 cam I degreed it and recorded lift and duration every few degrees...intake and exhaust. Then after the install I did the same with the Grand Am cam. I plotted the data and found that the intake closing point of the Grand Am cam is the same as the Z06 cam!! Not as I would have thought since people say "narrow LSAs bleed off compression". Dynamic CR is 11.5:1. FWIW.
joel
Last edited by binksz06; Dec 9, 2003 at 12:04 PM.
6600 rpm clutch dump of death Administrator
Joined: Dec 2001
Posts: 4,983
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From: Texas
Originally Posted by binksz06
J-Rod- thanks for the help.
I'm going to try to get a lot of VE data this weekend for ChrisB and NoGo's VE tuning.....I'm hoping this improves my transition to idle.
Interestingly - Before I pulled my 2001 Z06 cam I degreed it and recorded lift and duration every few degrees...intake and exhaust. Then after the install I did the same with the Grand Am cam. I plotted the data and found that the intake closing point of the Grand Am cam is the same as the Z06 cam!! Not as I would have thought since people say "narrow LSAs bleed off compression". Dynamic CR is 11.5:1. FWIW.
joel
I have the ASA tune from Dave Farmer . ASA Tune-Timing is setup for 2000 (or earlier) heads ...too much for my setup. VE is stock 2000 Vette.
I asked Godspeed ( Jeremy) to help me out several times - he said "send me your file"- I did, and I never heard from him again.NoGo has been a Godsend (Pun intended). He is the man. NoGo has helped me alot....Great teacher!
I pretty much have it tuned except a recurrent drop in timing and AFR at 2500, 3000 and 3500 RPM - when held at constant RPM, TP% etc. It's not Cat Overtemp but very similar......I'm going to try to get a lot of VE data this weekend for ChrisB and NoGo's VE tuning.....I'm hoping this improves my transition to idle.
Interestingly - Before I pulled my 2001 Z06 cam I degreed it and recorded lift and duration every few degrees...intake and exhaust. Then after the install I did the same with the Grand Am cam. I plotted the data and found that the intake closing point of the Grand Am cam is the same as the Z06 cam!! Not as I would have thought since people say "narrow LSAs bleed off compression". Dynamic CR is 11.5:1. FWIW.
joel
Keep us posted on the results...
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Originally Posted by J-Rod
I dunno, I talked with Lou, and he said he had done several cars with that cam, and that the computer was avaliable from GM. He said they have about 32 degrees of timing. I would guess 11.5 Cr and 32 degrees on pump gas wouldn't be the hot ticket.
Keep us posted on the results...
Keep us posted on the results...
joel
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Weve seen as high as 450/~400 ( Think that was the tq.)
Forged bottom end, 11:1 CR ( Speed worldchallenge rules) GM LS6 CNC heads, stock un ported TB, LG Pro LTs. THis was a C5.
It definately needs to be spun beyond 7k.
I had a graph, Ill see if I cant dig it up
Forged bottom end, 11:1 CR ( Speed worldchallenge rules) GM LS6 CNC heads, stock un ported TB, LG Pro LTs. THis was a C5.
It definately needs to be spun beyond 7k.
I had a graph, Ill see if I cant dig it up
On The Tree
Joined: Jan 2002
Posts: 107
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From: Round Rock, TX
My brother had it in his 02 Z06 with a slight off-set crank (~360 ci). He put down 457/417, and that was over a year ago with an older version of LS6 CNC heads. He drove it every day.
I put it in my 383 with LS6 CNC heads, TPIS, 3.73, etc. and put down 475/420. I could run 11.3's with 1.8 60' in good weather here in Texas. It was my daily driver then. FWIW, I am still tuning my new SR, 244/253 .689/.698 110, and I don't mind driving it around town.
Hey Lou, did you guys ever get Pat's car tuned with this package. I sent him some info about it (and about tuning), but never heard back from him.
Joel, you need to stop scaring the neighbors and go to the track. I have had some terminal computer failure, and I haven't recovered some of my tuning info.
I put it in my 383 with LS6 CNC heads, TPIS, 3.73, etc. and put down 475/420. I could run 11.3's with 1.8 60' in good weather here in Texas. It was my daily driver then. FWIW, I am still tuning my new SR, 244/253 .689/.698 110, and I don't mind driving it around town.
Hey Lou, did you guys ever get Pat's car tuned with this package. I sent him some info about it (and about tuning), but never heard back from him.
Joel, you need to stop scaring the neighbors and go to the track. I have had some terminal computer failure, and I haven't recovered some of my tuning info.
I plotted the data and found that the intake closing point of the Grand Am cam is the same as the Z06 cam!! Not as I would have thought since people say "narrow LSAs bleed off compression". Dynamic CR is 11.5:1. FWIW.
Last edited by John B; Dec 10, 2003 at 08:13 AM.
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Originally Posted by TXNC5
My brother had it in his 02 Z06 with a slight off-set crank (~360 ci). He put down 457/417, and that was over a year ago with an older version of LS6 CNC heads. He drove it every day.
I put it in my 383 with LS6 CNC heads, TPIS, 3.73, etc. and put down 475/420. I could run 11.3's with 1.8 60' in good weather here in Texas. It was my daily driver then. FWIW, I am still tuning my new SR, 244/253 .689/.698 110, and I don't mind driving it around town.
Hey Lou, did you guys ever get Pat's car tuned with this package. I sent him some info about it (and about tuning), but never heard back from him.
Joel, you need to stop scaring the neighbors and go to the track. I have had some terminal computer failure, and I haven't recovered some of my tuning info.
I put it in my 383 with LS6 CNC heads, TPIS, 3.73, etc. and put down 475/420. I could run 11.3's with 1.8 60' in good weather here in Texas. It was my daily driver then. FWIW, I am still tuning my new SR, 244/253 .689/.698 110, and I don't mind driving it around town.
Hey Lou, did you guys ever get Pat's car tuned with this package. I sent him some info about it (and about tuning), but never heard back from him.
Joel, you need to stop scaring the neighbors and go to the track. I have had some terminal computer failure, and I haven't recovered some of my tuning info.
Your cam strikes fear in Type Print!!!!( I Like Big Lobes - Pairs!)
How are the launches coming along???
joel
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Originally Posted by G2 LS1
Weve seen as high as 450/~400 ( Think that was the tq.)
Forged bottom end, 11:1 CR ( Speed worldchallenge rules) GM LS6 CNC heads, stock un ported TB, LG Pro LTs. THis was a C5.
It definately needs to be spun beyond 7k.
I had a graph, Ill see if I cant dig it up
Forged bottom end, 11:1 CR ( Speed worldchallenge rules) GM LS6 CNC heads, stock un ported TB, LG Pro LTs. THis was a C5.
It definately needs to be spun beyond 7k.
I had a graph, Ill see if I cant dig it up
Louis - Your '99 Hardtop is Beautiful!!! My compliments to the Chef.
joel
Originally Posted by TXNC5
My brother had it in his 02 Z06 with a slight off-set crank (~360 ci). He put down 457/417, and that was over a year ago with an older version of LS6 CNC heads. He drove it every day.
On The Tree
Joined: Jan 2002
Posts: 107
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From: Round Rock, TX
Originally Posted by Chris81
Does your brother work at Scoggin Dickey? It sounds just like the car my cousin described to me.. If so my cousin works with him and I looked at that car when it was for sale at Classic Motors in Lubbock, we actually got the guy to start it up for us because I had heard that it had the Grand Am Cup cam, needless to say..it sounded wicked as hell.
When I put mine back together about two month's ago, I circled my neighborhodd twice with only my headers hooked up. It was just getting dark when we fired it up. On my second loop, there were way too many people coming out their homes to see just what the hell was going on. I am sure they wanted to know who the white trash NASCAR loving vette owner was. Soon after, all the men were around asking for rides (when their wives aren't around). I still get the 'evil eye' from all the women in my hood.
On The Tree
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Posts: 107
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From: Round Rock, TX
Originally Posted by binksz06
John - sorry to hear about your computer. I do need to get some track time...maybe in the spring. I need 4.10s......and a bigger bank acct.
Your cam strikes fear in Type Print!!!!( I Like Big Lobes - Pairs!)
How are the launches coming along???
joel
Your cam strikes fear in Type Print!!!!( I Like Big Lobes - Pairs!)
How are the launches coming along???
joel
I am going tonight. The air should be decent. I finally have my Timing Tuner installed and will try at least a 100 shot.
Last Friday, my racing buddies went. The air was soooooo good they each ran about 3-4 tenths faster than their previous bests. I would have finally been in the 10's NA for sure. I weighed my beast: 3475!
I send you a link to an 11.20 run of mine.
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Originally Posted by John B
Joel, help me out here.....based on the '01 ZO6 cam intake valve closing at 81° the stock ZO6 dynamic CR ~7.2:1 not 11.5:1......please explain!
Stock bore and stroke.
2002 factory headgasket - ( 0.056" ?)
Flycutting pistons -1 cc
Piston out of the hole - is it .006" ?
I looked up all the neccessary info back then (spring '03). Sorry, I didn't record it.
I used this DCR Page/CalculatorDCR . Actually, if I remember correctly it came out slightly above 11.5:1. FWIW.
joel
The SDPP heads are milled .055". I cc'd mine - -> 58.5 cc.
Stock bore and stroke.
2002 factory headgasket - ( 0.056" ?)
Flycutting pistons -1 cc
Piston out of the hole - is it .006" ?
I looked up all the neccessary info back then (spring '03). Sorry, I didn't record it.
I used this DCR Page/CalculatorDCR . Actually, if I remember correctly it came out slightly above 11.5:1. FWIW.
joel
Stock bore and stroke.
2002 factory headgasket - ( 0.056" ?)
Flycutting pistons -1 cc
Piston out of the hole - is it .006" ?
I looked up all the neccessary info back then (spring '03). Sorry, I didn't record it.
I used this DCR Page/CalculatorDCR . Actually, if I remember correctly it came out slightly above 11.5:1. FWIW.
joel