Level 1 SUM-8714 Stage 4 Vortec Truck Swap Cam and Beehive spring kit: 226/230 112 +4, .545/.545
CURRENT 6.0/4l80E swap parts = $$$$
- Thread starter FastCraig
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Your cam is really close to mine, its gonna be pretty good. You should try it with the stock intake, before you drop a bunch of money on a new one, I think you'll be a lot happier.
I am going to use the truck intake for awhile. My tune is set up for that. I'm finally getting the parts to get the motor and trans in the car. I'm VERY EXCITED!!!
The bolded area is spot on. I run a 102 and if I had to do it over I would run a 92mm. The 102 is for a high HP, excess of 600, NA build. Bigger isn't always better.
The tuning is very difficult in the 0-15% throttle movements. Basically, very little pedal movement creates a very large vacuum change/MAF change. Once you're into the throttle the issue is gone, but for a cruiser/daily driver you'll be in a the troubleseome range alot.
My issue with the truck intake, that is truly the best street intake available, is that it's SO DAMN UGLY. I'm truly surprised that no one has come up with an aftermarket cover the truck intake that is somewhat more aesthetically soothing.
^^^^^^^^ this here is spot on! I still have a complete truck intake with injectors, rails, hell even two throttle bodies sitting in my basement. Even with the stock cover I couldn't get past the ugly for my build and opted for the Holley MidRise because it's a proven performer across the powerband.
Craig, take the advice given man! I ended up with a 92mm TB for the airflow reasons listed above. If guys are tossing stock TB's on, boosting the engines and making power, why get a monster TB for a street cruiser NA build.
If you want it just to say you have it, go for it but the driveability will suck. I'm running a larger cam in a 5.3, and with the combo I have setup it will be a riot on the street, but I have hours and hours of research and reading and asking questions, and taking sound advice and constructive criticism if I began to deviate from the plan.
That intake looks bitchin! All the dudes here are right on about the tuning though. Mine makes 700+ on a stock truck intake and throttle body. Boost negates the need for big parts!
I have the Lsxr102 intake with matching tb. I hope that the self tuning capabilities of the Holley xmax will help with this. Are you guys saying that it won't or if you are tuning stock computer that it's harder?
You're backwards here.
TH350 = 2.52/1st, 1.52/2nd, 1.00 final drive
TH400 = 2.48/1st, 1.48/2nd, 1.00 final drive
4l80e = 2.48/1st, 1.48/2nd, 1.00/3rd, .75 final/over-drive
The 4l80 will not increase gear multiplication, it will slightly lower it. Whether that's better or worse depends on the combo, rear end gearing, & tire OD.
You have to tune the transient response yourself. It's not hard, just time consuming to really fine tune. Just like a carb accelerator pump. I have an annoying lean popping when I stab the throttle that I'm slowly getting ironed out with the 92mm. It's a little easier with a DBC because you can slow down the initial tip in and smooth it out with throttle response settings.
The 102mm is for max effort high rpm power. It will do nothing but make life harder everywhere else in the "street car" area of rpm, even more for a cable setup.
Agreed. Even the shaved/painted factory truck intakes are ugly as sin.
Ive always liked the TBSS cover....although it might be tight clearance under a g-body hood.
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