Can you tell if an LSx engine has VVT or AFM using the VIN? If not, how can I tell?
08-16-2007, 11:34 PM
#1
Can you tell if an LSx engine has VVT or AFM using the VIN? If not, how can I tell? Planning to do a cam swap on a 07 5.3L V8 Avalanche. I need to figure out if it has VVT or AFM before I accept the job since I don't know of any aftermarket cams that can be used in engines that have VVT or AFM. Do any sponsors sell aftermarket cams for VVT/AFM equipped engines?
08-17-2007, 08:19 AM
#2
The 5.3L has AFM (which can be turned off with EFI Live or HPT) and it does not have VVT. Some, but not all of the 5.3s have the larger single bolt on the snout of the cam as opposed to the 3 bolts like conventional LS1s have. You'd need to know this in advance so you could order your cam correctly.
__________________
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.
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.
08-17-2007, 08:52 AM
#3
That's the problem. If the AFM engine has a single bolt as opposed to the conventional 3 bolt pattern I need to be able to figure it out ahead of time, rather than having to wait until after I've pulled the timing cover to find out. By the time I pull the timing cover off I want to have all the replacement parts sitting on the workbench waiting to be installed. If there are cams available for AFM LSx engines I don't know about them.
01-06-2015, 01:40 PM
#4
TECH Senior Member
iTrader: (7)
Here is a breakdown of all GM truck engines for 2007:
https://archives.media.gm.com/us/pow...07/07truck.htm
You should be able to get the information you need.
Andrew
https://archives.media.gm.com/us/pow...07/07truck.htm
You should be able to get the information you need.
Andrew
Last edited by Project GatTagO; 01-06-2015 at 01:49 PM.
