GM LS 9 camshaft
02-06-2010, 02:39 PM
#11
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i had the gt7 cam with my 370/mp112. 208/230 .59x 121 it was kinda dead in the middle range...maybe due to having a heavy truck. i think the gt2-3 might have been a better choice at the time.
my 224/228 .600 114 was much better. pulled hard throughout the range and sounded good, too.
i have 224/230 .595 116 now and it was awesome with my tvs1900 tons of midrange and pulls hard.
my 224/228 .600 114 was much better. pulled hard throughout the range and sounded good, too.
i have 224/230 .595 116 now and it was awesome with my tvs1900 tons of midrange and pulls hard.
02-06-2010, 02:49 PM
#12
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I think the GM LS7 & LS9 will not work with our style of engines(99-06) engine because of the cam sensor setup are different.But I'm not an expert.Somebody must know 100%.
I also thing the 122.5 & 120 LS is not as good as a 114-118 range for a F/I .Also that EVILGMC just gave us his experience with his setups that he tried so far.
I also thing the 122.5 & 120 LS is not as good as a 114-118 range for a F/I .Also that EVILGMC just gave us his experience with his setups that he tried so far.
02-06-2010, 03:19 PM
#14
I think the GM LS7 & LS9 will not work with our style of engines(99-06) engine because of the cam sensor setup are different.But I'm not an expert.Somebody must know 100%.
I also thing the 122.5 & 120 LS is not as good as a 114-118 range for a F/I .Also that EVILGMC just gave us his experience with his setups that he tried so far.
I also thing the 122.5 & 120 LS is not as good as a 114-118 range for a F/I .Also that EVILGMC just gave us his experience with his setups that he tried so far.
Originally Posted by silveradokidd_4518
you'll have to end up getting the LS2 timing cover conversion kit to make the cam work i believe...
Originally Posted by budhayes3
I have a question that may be of some concern...if you run the LS9 camshaft do you have to replace the cam gear and timing cover? I don't believe that the cam has the lobe for the cam sensor on the rear of the camshaft. Also is it a single bolt or 3 bolt camshaft? You may need to get a different cam gear, cam gear bolt, timing cover and cam sensor, and run the wires to the cam sensor to the front of the engine
Originally Posted by 1Bear
I wouldn't really consider your post as much of a question as it is the answer for anyone contemplating using a Gen IV cam in a Gen III application.
02-06-2010, 03:47 PM
#15
LS7 Cam, Part Number: 12571251, dur. @ 0.050” I: 211 / E: 230, lift w/1.7 rocker I: .558 / E: .558, lobe sep. 121
Note: Straight from GM catalog, Stock LS7 camshaft will not work in a Gen III engines. Max Lift with 1.8 rockers .591 / .591
Of course the notes from the GM catalog means that it is not a direct fit, but does not take into account the option of switching to a LS2 timing cover/sensor and the required matching timing gears. And just the same as when performing a Gen IV swap into a vehicle originally equipped with a Gen III, one would need a camshaft position sensor harness extension.
Also, I don’t know if there is actually much performance difference between the GT-7 and the GT2-3 when in a comparable equipped vehicle, as kysilverado and I run very similar times, both of us having LQ4’s, ECSB’s with each one of having one of the cams listed.
Note: Straight from GM catalog, Stock LS7 camshaft will not work in a Gen III engines. Max Lift with 1.8 rockers .591 / .591
Of course the notes from the GM catalog means that it is not a direct fit, but does not take into account the option of switching to a LS2 timing cover/sensor and the required matching timing gears. And just the same as when performing a Gen IV swap into a vehicle originally equipped with a Gen III, one would need a camshaft position sensor harness extension.
Also, I don’t know if there is actually much performance difference between the GT-7 and the GT2-3 when in a comparable equipped vehicle, as kysilverado and I run very similar times, both of us having LQ4’s, ECSB’s with each one of having one of the cams listed.
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