LT1 w/ cc503
LT1 w/ cc503 How bad will it run un-tuned? It has untouched internals/heads. I want to make sure I have everything right with the engine install before I get a tune. Has anyone ran theres without a tune?
Also when I do get a tune, what would you guys recommend the shifting points be set at. I figure at the track 6000-6200rpms will be my shift points......Thanks, Mike
Also when I do get a tune, what would you guys recommend the shifting points be set at. I figure at the track 6000-6200rpms will be my shift points......Thanks, Mike
Staging Lane
Joined: Dec 2005
Posts: 87
Likes: 1
From: Bucks County
How bad will it run un-tuned? It has untouched internals/heads. I want to make sure I have everything right with the engine install before I get a tune. Has anyone ran theres without a tune?
Also when I do get a tune, what would you guys recommend the shifting points be set at. I figure at the track 6000-6200rpms will be my shift points......Thanks, Mike
Also when I do get a tune, what would you guys recommend the shifting points be set at. I figure at the track 6000-6200rpms will be my shift points......Thanks, Mike
As for the automatics, I'm pretty sure a tune is required because it will destroy the transmission or something after a while. I'm sure someone else will chime in.
When I had the cc503 I ran the car untuned for a week or two until I could get it on a dyno. It ran pretty well, would die out in reverse sometimes but it wasn't terrible. I wouldn't recommend going WOT, just keep it easy until you get the tune in there.
As for the shiftpoints I would aim for 6200-6300 RPM, preferably closer to 6300. Any lower and you will be sacrificing a little MPH and any higher you will feel it fall on its face.
As for the shiftpoints I would aim for 6200-6300 RPM, preferably closer to 6300. Any lower and you will be sacrificing a little MPH and any higher you will feel it fall on its face.
TECH Resident
Joined: Jul 2007
Posts: 749
Likes: 1
From: Spokane, WA
Yeah it won't run great but it should run well enough to tell if everything is ok and carefully drive it to the tuner if you choose. I'm not sure what that cam's ideal shift point is but I wouldn't go any higher than the 6200 you mentioned on a bone stock bottom end. You can but if you do you're sort of asking for it.
When I first built my LT1 5yrs ago, I had a 503 cam in it but I also had ported heads and bigger valves with 30svos and an A4. Bottom line, yeah breaks would hardly hold the car at a light and needed to go to N. Car ran with all those mods without a tune. You'll be fine but find a tunner.
Trending Topics
driving it w/o a tune would be unwise for any length of time. Running it wont hurt it. I would aim for 6200 max rpm shift point, you dont have enough head for more. I think @ 6200 its going to run out of steam fast from the heads choking it.
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine
Verdad Gallardo
7 Most Reliable High-Performance Engines GM Has Ever Built
Verdad Gallardo
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin
Verdad Gallardo
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
