Can I start it before I get it tuned?
Thread Starter
Staging Lane
Joined: Jul 2003
Posts: 67
Likes: 0
Can I start it before I get it tuned? Hello everyone,
I have a 77 vette with a LS1 in it. I ran it stock for a few years, but decided I needed a change. I replaced the entire top end; trick flow heads, huge cam, 102 fast intake, fuel pump, 25lbs red top injectors, etc.. I have yet to try to turn it over. I want to make sure everything is functioning before I take it to get it tuned.
My questions are:
Can I try to start it without harming the engine? I have read that the injectors will pump way to much fuel and will screw up everything...
Another question: I have removed the cats and the air pump trash, can I just simply cut the plugs for the 02 sensors and the air pump?
Thanks
I have a 77 vette with a LS1 in it. I ran it stock for a few years, but decided I needed a change. I replaced the entire top end; trick flow heads, huge cam, 102 fast intake, fuel pump, 25lbs red top injectors, etc.. I have yet to try to turn it over. I want to make sure everything is functioning before I take it to get it tuned.
My questions are:
Can I try to start it without harming the engine? I have read that the injectors will pump way to much fuel and will screw up everything...
Another question: I have removed the cats and the air pump trash, can I just simply cut the plugs for the 02 sensors and the air pump?
Thanks
Hello everyone,
I have a 77 vette with a LS1 in it. I ran it stock for a few years, but decided I needed a change. I replaced the entire top end; trick flow heads, huge cam, 102 fast intake, fuel pump, 25lbs red top injectors, etc.. I have yet to try to turn it over. I want to make sure everything is functioning before I take it to get it tuned.
My questions are:
Can I try to start it without harming the engine? I have read that the injectors will pump way to much fuel and will screw up everything...
Another question: I have removed the cats and the air pump trash, can I just simply cut the plugs for the 02 sensors and the air pump?
Thanks
I have a 77 vette with a LS1 in it. I ran it stock for a few years, but decided I needed a change. I replaced the entire top end; trick flow heads, huge cam, 102 fast intake, fuel pump, 25lbs red top injectors, etc.. I have yet to try to turn it over. I want to make sure everything is functioning before I take it to get it tuned.
My questions are:
Can I try to start it without harming the engine? I have read that the injectors will pump way to much fuel and will screw up everything...
Another question: I have removed the cats and the air pump trash, can I just simply cut the plugs for the 02 sensors and the air pump?
Thanks
Thread Starter
Staging Lane
Joined: Jul 2003
Posts: 67
Likes: 0
i would not recommend starting the car with red tops in it, being that its untuned. like stated above, put the stock injectors back in if you plan to start & run it at all on the stock tune. the 30# svo injectors will dump a pile of fuel into the motor unless the IFR tables in the PCM are modified.
i would not recommend starting the car with red tops in it, being that its untuned. like stated above, put the stock injectors back in if you plan to start & run it at all on the stock tune. the 30# svo injectors will dump a pile of fuel into the motor unless the IFR tables in the PCM are modified.
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Even with stock injectors you can wash out the rings.
A stock VE/MAF table can be too high for cold start, open loop.
I wouldn't start a new engine or a modded one without being able to change some things in the tune first.
A stock VE/MAF table can be too high for cold start, open loop.
I wouldn't start a new engine or a modded one without being able to change some things in the tune first.
Thread Starter
Staging Lane
Joined: Jul 2003
Posts: 67
Likes: 0
Thank you for the imput guys. Frost, sorry for the disappointment, I guess I was expecting people to read my mind and answer my question why I can't start it.. I should have explained better.
I will get the car tuned before I attempt to turn it over. What is the recommended course of action: Pay a tuner shop to tune the car and dyno it for $450 or by my own for $800???
I will get the car tuned before I attempt to turn it over. What is the recommended course of action: Pay a tuner shop to tune the car and dyno it for $450 or by my own for $800???
Thread Starter
Staging Lane
Joined: Jul 2003
Posts: 67
Likes: 0
Flint, good question. I don't know...
This is the setup I have:
Camshaft specs are 228/230 duration, .585 in./.585 in. lift, 112 lobe separation angle
Trick flow heads: Cylinder Heads, GenX™ 215, CNC Ported, Aluminum, Assembled, 64cc CNC Chamber
102mm Fast intake
95mm intake
headers
Are the redtops enough for this setup? Do I need more? The bottom end of the engine in untouched, for now...
The red-tops will cover that... if it were mine, I would put a good fuel pump in it though - best to do that before you tune it too...
Tuning depends on your abilities... and the availability of a good tuner near you...
Tuning depends on your abilities... and the availability of a good tuner near you...
Thank you for the imput guys. Frost, sorry for the disappointment, I guess I was expecting people to read my mind and answer my question why I can't start it.. I should have explained better.
I will get the car tuned before I attempt to turn it over. What is the recommended course of action: Pay a tuner shop to tune the car and dyno it for $450 or by my own for $800???
I will get the car tuned before I attempt to turn it over. What is the recommended course of action: Pay a tuner shop to tune the car and dyno it for $450 or by my own for $800???
Thread Starter
Staging Lane
Joined: Jul 2003
Posts: 67
Likes: 0
Forgot to mention: Aermotive Tyhoon fuel pump with 10 and 100 micron filters. It broke my heart to put that pump in a place it couldn't be admired.
Last edited by 77vetteLS1; Jun 4, 2010 at 10:35 AM.
