03 ls1-Getting most off idle torque
03 ls1-Getting most off idle torque I have an oem corvette ls1. I will be getting either 243 or 799 heads. What are the best ways to get the most off idle torque I can. I am putting this in a rock crawler. Am running an old truck 4 spd with granny low and the gear spacing requires a lot of torque to pull from gear or gear with 37" tires. Having a 5500 rpm rev limit is completely fine. Thanks for all your help.
I would take the 243/799 heads and have about .007 hacked off them then run a .40 cometic gasket. This will give you 11:1 compression but the thinner gasket will give you a much better quench than just using a stock gasket and milling the heads more. Then go with a cam in the 214/218 range ona 114-116 lsa and you will be in a pretty good place
not at all, ls2 and ls7's both knock on the door of 11:1 bone stock. with modern tuning and aluminum heads its really no problem, dynamic compression plays a bigger role in detonation anyway and that is altered by cam selection anyway
Ported 5.3 heads or if you got the cash some AFR 205s will build more torque down low due to the higher compression and better velocity from the runners.
Advance that cam to a 110lsa and you will have a nice tree-stump puller.
Advance that cam to a 110lsa and you will have a nice tree-stump puller.
I'd love to do a whipple but I'm somewhat limited on what I can spend. I'd like to keep it around $1000 to throw at it. I will also be using either stock exhaust manifolds of some sort or the hooker manifolds due to space restrictions. Are higher ratio rockers a good idea?
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Verdad Gallardo I'd love to do a whipple but I'm somewhat limited on what I can spend. I'd like to keep it around $1000 to throw at it. I will also be using either stock exhaust manifolds of some sort or the hooker manifolds due to space restrictions. Are higher ratio rockers a good idea?
The heads are going to cost you about $400, so that leaves $600. I would use that to have the heads milled and maybe a valvejob with a little blending into the chamber and port. By the time you buy gaskets, new head bolts, and fluids you should be at a little under your budget.
FYI, you don't need a 11.0:1 SCR, 10.0-10.5:1 is plenty.
Lots of off idle torque, with one of theses cams!
Both of these are custom grinds.
http://www.texas-speed.com/p-161-com...-camshaft.aspx
210/214 112lsa+4, lift .556"/.559" lobes are Xtreme RPM high lift lobes are #3708(210*), and #3710(214).
If you're willing to sacrifice some valve spring life for even more power, then swap the #3708 (210*) lobes for a XFI #3012(210*) lobes with .595" lift.
With the first cam PAC 1218 valve spring are plenty.
For the second cam PAC 1211X valve springs.
Now if you want a shelf grind then look at the CompCams # 54-408-11(206/212 112lsa+2, lift .515"/.522").
http://www.ws6project.com/user_stor/...e-rpm-206-212/
Lots of off idle torque, with one of theses cams!
Both of these are custom grinds.
http://www.texas-speed.com/p-161-com...-camshaft.aspx
210/214 112lsa+4, lift .556"/.559" lobes are Xtreme RPM high lift lobes are #3708(210*), and #3710(214).
If you're willing to sacrifice some valve spring life for even more power, then swap the #3708 (210*) lobes for a XFI #3012(210*) lobes with .595" lift.
With the first cam PAC 1218 valve spring are plenty.
For the second cam PAC 1211X valve springs.
Now if you want a shelf grind then look at the CompCams # 54-408-11(206/212 112lsa+2, lift .515"/.522").
http://www.ws6project.com/user_stor/...e-rpm-206-212/
I'd still have the 241 heads milled to about a 64cc chambers(stock's about 66.6cc) for a slight bump in SCR. Furthermore, consider having the chambers cleaned(smoothed) a little.
Last edited by 99Bluz28; Jun 10, 2014 at 03:58 PM. Reason: correction