I was wondering if anyone over here would happen to know how much lift you can do on an LQ4 untill you need to put valve reliefs on the pistons? Cam Im looking to go with is .635 lift and the previous owner had reliefs on his pistons just incase. Motor is an LQ4 with stock crank and 241 heads. Thanks guys, everyone on PTnet said measure it but I was hoping someone would know
its not just lift you need to worry about you need to worry about lift along with duration. with that being said i know a MS4 clears a lq4 with 243 heads
2002 Lightning - GT headed 5.5Litre w/ Twin 7665s
2002 Silverado - 427Lsx w/ Twin gt4202s
2010 Silverado crewcab Z71 - 5.3litre w/ procharger
2000 Wrangler - 5.3litre with some stance
2014 Xsport- 3.5 Eco boost
412 Motorsports
it ain't that I'm too big to listen to the rumors, It's just that I'm too damn big to pay attention to 'em..That's the difference
Sweet, thats about all I need to know then since the duration is 240/240. Thanks Quik
Nice sig btw, haha
It will be close. Funny no one asked if the heads or block was milled. Way too little info to guess.
o btw you best get some compression with a cam like that. something around 11.1 anything less youll be losing power
2002 Lightning - GT headed 5.5Litre w/ Twin 7665s
2002 Silverado - 427Lsx w/ Twin gt4202s
2010 Silverado crewcab Z71 - 5.3litre w/ procharger
2000 Wrangler - 5.3litre with some stance
2014 Xsport- 3.5 Eco boost
412 Motorsports
it ain't that I'm too big to listen to the rumors, It's just that I'm too damn big to pay attention to 'em..That's the difference
re-read the 1st post... something to the affect of "stock LQ4, stock crank, and 241 heads" What else do you need to know?Originally Posted by GasGuzzler
dam.. I was waiting for that one. I was looking for 243s but couldnt find any in my price range at the moment.. Ill see where I go when its time for the monster cam to go in. For now its getting the 221/221 in my 4.8.
Thanks again Quik
Seems everyone has a different meaning of the word "stock" dude.
Well thanks for the input guys. On PTnet they suggested porting my heads as well or anythings gonna feel real soggy. So looks like Im good to go on that end.
Yes, since your heads are bone stock, you're asking about a huge cam, you know more than you're letting on, and the avatar has been seen before (LOL), you might wanna think about a P&P.
J/K....
yeah thats what I've been hearing. Definitely need porting but it'll have to wait till the big cam is ready to go in.
Trailer Park Boys FTW
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