A lot of people have had that problem through the years. Before the sale, they are supposedly pretty good- but post sale tech support is lacking. That may have changed now, but since zzp/stattama turbo kits came out for the 3800s- they have definitely taken a beating on that front. With the 5.3's, they have more market control.

That is true to a certain extent, on street tires- you can't really hook enough down low to break anything. When you start making 400+ whp, even roll races will start to really stretch on that drive chain.

You've asked this multiple times, did you actually go search/post over at ls1tech? Are you wanting to do a beefy NA build- or are you wanting to boost it?

ZZP does a pretty good job. I used to prefer dynotech, but their head guy died. It does get pretty stupid expensive though.

 

i will look into zzp then. does it matter about the hd part or no?

 

I'm not sure what you are asking. The 4t65 and 4t65hd are virtually the same transmission, with the only major internal differences being a different differential/housing and different chain/sprockets (for a different drive ratio)- the builds for the two transmissions are the same as they share 99% of the same parts- so the weak points are identical, as are the upgrade parts.

 

that is what i didn' know, and what i was trying to ask. thanks.

 

just an update

i have been doing some research and i have found a few things.....
you can put the ls6 intake manifold on our cars. with modification. below will be a link to that mod..
since that intake manifold will fit so will a supercharger about 5 grand.

also if you really wanna crank out some good power the stroke is the same between the ls4 and ls1. so bore the ls4 to ls1 specs i think its like 3.898. get some pistons and rods.. your good to go. since you got the block out you might as well do a cam (still researching) and then also lifters, rocker arms, and springs.

if you do all the intake and bore i would guestimate about 400 hp

the turbo kit was put on a monte.... link below also.
his tranny already broke.

intake manifold: http://www.ls1tech.com/forums/ls4-fr...-closer-3.html
and turbo: http://www.ls1tech.com/forums/ls4-fr...installed.html

 

Doesn't +100 hp sound kinda steep from an overbore and intake manifold?

 

all of the intake including the maf, cam, lifters, springs, and rocker arms.
sorry my bad. it would obviously also need the appropriate tune

 

would the turbo/super mess with your dod? would it still work? like thats how you get good gas lol. cause if the turbo is usually going off 8 cyl then 4?...

 

I wouldn't think either a s/c or turbo would effect DOD. DOD should only deactivate cylinders when driving around at part throttle. When you floor it, and your wastegate (or boost bypass valve for s/c) closes- the engine should be running off all 8 cylinders anyways.

 

the turbo will not mess with it. but the supercharger will. since the supercharger will sit ontop were the intake manifold is the dod system is underneith. since you will need to use an ls6 superchager you will have to make many modifications to the system to make it work. you are better off going with the turbo for many reasons. it is cheaper and more efficient.

i have put alot of time and research into this and have found that you are looking at upwards of 8000 bucks.(superhcarger 10000)assuming you do trans work. and do it all yourself. good luck.

going fast is not a matter of the car but how deep your pockets are