Cam upgrade w/DOD
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From: Glen Ellyn, IL
Cam upgrade w/DOD Hey guys,
Looking to do a cam swap and I would like to keep the DOD. I have a source where I can get a OEM GM cam for cheap, I just gotta pick one.
Stock LS4 cam is:
INT:0.283"/0.289" lobe lift
EXH: 0.283"/0.289" lobe lift
LS2 cam:
INT: 0.306"
EXH: 0.305"
'02 LS6 cam:
INT: 0.324"
EXH: 0.322"
Can the DOD lifters handle either cam? Will either cam work with the stock LS4 timing chain?
We do a lot of truck motors. I can count on one hand how many vette motors I've done.
Looking to do a cam swap and I would like to keep the DOD. I have a source where I can get a OEM GM cam for cheap, I just gotta pick one.
Stock LS4 cam is:
INT:0.283"/0.289" lobe lift
EXH: 0.283"/0.289" lobe lift
LS2 cam:
INT: 0.306"
EXH: 0.305"
'02 LS6 cam:
INT: 0.324"
EXH: 0.322"
Can the DOD lifters handle either cam? Will either cam work with the stock LS4 timing chain?
We do a lot of truck motors. I can count on one hand how many vette motors I've done.
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From: Glen Ellyn, IL
Thread Starter
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From: Glen Ellyn, IL
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From: Farmington Hills, MI
The is just an opinion, but I think the G8 GT cam with Crane 1.8's would be a potent DOD compatible combo with completely stock idle and drivability. The G8 GT cam is already ground with DOD in mind. I also looked at the L99 cam, but it is less aggressive and it is setup for VVT.
The first post puts the stock LS4 specs at 193/193 on 114, and the stock G8 GT at 200/208 on 116:
https://ls1tech.com/forums/ls4-front...cam-specs.html
https://ls1tech.com/forums/pontiac-g...cam-specs.html
The 1.8's would offset the small loss of lift, and the extra duration would be nice. It's a lot of work to change the cam, but you wouldn't have to pull the heads and change the lifters. The Crane 1.8s are worth 18 WHP by themselves, and you could get another 10-20 WHP from the cam.
Personally, I came to the conclusion that I was just going to with the $750 cam package over the $700 rocker package and (just guessing) $50 used cam, and take the extra HP of the big cam. Obviously the cam is a little too big without some supporting mods (not that it isn't drivable or fun!), so the other package still looks really good and won't require spinning the engine as much.
The first post puts the stock LS4 specs at 193/193 on 114, and the stock G8 GT at 200/208 on 116:
https://ls1tech.com/forums/ls4-front...cam-specs.html
https://ls1tech.com/forums/pontiac-g...cam-specs.html
The 1.8's would offset the small loss of lift, and the extra duration would be nice. It's a lot of work to change the cam, but you wouldn't have to pull the heads and change the lifters. The Crane 1.8s are worth 18 WHP by themselves, and you could get another 10-20 WHP from the cam.
Personally, I came to the conclusion that I was just going to with the $750 cam package over the $700 rocker package and (just guessing) $50 used cam, and take the extra HP of the big cam. Obviously the cam is a little too big without some supporting mods (not that it isn't drivable or fun!), so the other package still looks really good and won't require spinning the engine as much.
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From: Glen Ellyn, IL
The motor is coming out anyway to do an oil pump and lifters per a GM bulletin that pertains to a condition I'm having with my car.
I could give up DOD all together, but I like the extra MPG. I don't think its working well though because my buddy's 08 Impala SS is way faster (granted probably has the 3.29 gear and I don't) and he averages 19 ish MPG and I average 16.5 mpg with similar driving conditions.
I could give up DOD all together, but I like the extra MPG. I don't think its working well though because my buddy's 08 Impala SS is way faster (granted probably has the 3.29 gear and I don't) and he averages 19 ish MPG and I average 16.5 mpg with similar driving conditions.
