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  #1  
Old 10-30-2007, 04:33 AM
t/a-speed t/a-speed is offline
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Default Swapping to EFI without switching cams

I'm having a hard time putting something together that will work with the below cam. I've searched several sites but can't get a clear answer as to how flexible each system will be for cam tuning.
My Options:
Stealthram with stock TPI ECM and wiring harness.

Full stealthram package from Summit.

Edelbrock pro-flo EFI.

Holley 950 system.

F.I.R.S.T. system (but was told the cam was too big for the ECM).

I want reliability and still have the performance from my 69 camaro.
It has a 355 with a 4 speed muncie and 410 gears.
Edelbrock RPM Heads, cam(234/244 @.50 .488/.510 on a 112), and Intake.

If I can get something put together then I can think about adding a six speed.

I'm not racing it, I just want to be able to start it, drive it and be able to drive it 400 miles without something going wrong.
Thanks for looking..

Last edited by t/a-speed; 11-03-2007 at 09:45 AM.
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  #2  
Old 11-02-2007, 11:50 PM
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I think you have some mis-printed numbers on the duration, but I think I know which one you're talking about. That is not a large cam and should not cause any issues with a system that can be tuned. If the FIRST system can't tune that then it is either not tuneable or severely limited and should be avoided.

Jody
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Old 11-03-2007, 09:56 AM
t/a-speed t/a-speed is offline
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Your so right about the specs, I edited the post to reflect what I think are the right numbers.

I emailed the FIRST people and they use a 730 ecm but the highest duration their people will tune for is 220. I can go my own route and either have it tuned or try it myself.

Since the car is show with some go, I think I can get away with having someone else burn a prom. There seem to be some good companies out there for this.

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Old 11-03-2007, 11:00 AM
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Quote:
Originally Posted by t/a-speed
Your so right about the specs, I edited the post to reflect what I think are the right numbers.

I emailed the FIRST people and they use a 730 ecm but the highest duration their people will tune for is 220. I can go my own route and either have it tuned or try it myself.

Since the car is show with some go, I think I can get away with having someone else burn a prom. There seem to be some good companies out there for this.


I would avoid any efi system that cannot tune beyond a 220 @.050 duration cam. Basically they are saying we're using a stock computer (which is fine) but have no way to tune it. The advantage of efi is in the ability to tune it; any of the other systems you mentioned could tune that combo easily, as well as FAST, BigStuff3, Accel, or simply a stock GM computer and tuning program like HP Tuners or EFI Live.

Jody
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Shannon at Modo Innovations for the cool billet DBW bracket
Roadster Shop for their Chevelle SPEC Chassis
Dakota Digital for their Chevelle HDX Gauge Package
Painless Performance for their wiring harness

Ron Davis Radiators for their radiator and fan assembly.
Baer Brakes for their front and rear brakes

Texas Speed and Performance for their 427 LS Stroker
American Powertrain for their ProFit Magnum T56 kit
Currie Enterprises for their 9" Third Member
Forgeline for their GF3 Wheels
McLeod Racing for their RXT street twin clutch
Ididit for their steering column
Holley for their EFI and engine parts
Lokar and Clayton Machine for their pedals and door and window handles
Morris Classic Concepts for their 3 point belts and side mirrors
Thermotec for their heat sleeve and sound deadening products
Restomod Air for their Tru Mod A/C kit
Mightymouse Solutions for their catch can
Magnaflow for their 3" exhaust system
Aeromotive for their dual Phantom fuel system
Vintage Air for their new Mid Mount LS front drive
Hydratech Braking for their hydroboost system
Borgeson for their stainless steering shaft and u joints
Eddie Motorsports for their hood and trunk hinges and misc parts
TMI Products for their seats, door panels, and dash pad
Rock Valley Antique Auto Parts for their stainless fuel tank
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Old 11-03-2007, 01:55 PM
t/a-speed t/a-speed is offline
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Thanks for the reply,
I was under the impression that the 730 ecm was a GM unit.
Meaning, I could have a custom prom made or buy my own equipment to burn proms.
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Old 11-03-2007, 03:51 PM
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Quote:
Originally Posted by t/a-speed
Thanks for the reply,
I was under the impression that the 730 ecm was a GM unit.
Meaning, I could have a custom prom made or buy my own equipment to burn proms.

nothing wrong with it if it's tuneable. I started in EFI with a prom-burner and tuning software. I do prefer the systems that tune via a laptop and allow faster changes vs the burning prom deal, but they both work.

Jody
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SPECIAL THANKS TO:
Jacob Ehlers and Amsoil for the lubricants and degreasers for my 70 Chevelle project
Shannon at Modo Innovations for the cool billet DBW bracket
Roadster Shop for their Chevelle SPEC Chassis
Dakota Digital for their Chevelle HDX Gauge Package
Painless Performance for their wiring harness

Ron Davis Radiators for their radiator and fan assembly.
Baer Brakes for their front and rear brakes

Texas Speed and Performance for their 427 LS Stroker
American Powertrain for their ProFit Magnum T56 kit
Currie Enterprises for their 9" Third Member
Forgeline for their GF3 Wheels
McLeod Racing for their RXT street twin clutch
Ididit for their steering column
Holley for their EFI and engine parts
Lokar and Clayton Machine for their pedals and door and window handles
Morris Classic Concepts for their 3 point belts and side mirrors
Thermotec for their heat sleeve and sound deadening products
Restomod Air for their Tru Mod A/C kit
Mightymouse Solutions for their catch can
Magnaflow for their 3" exhaust system
Aeromotive for their dual Phantom fuel system
Vintage Air for their new Mid Mount LS front drive
Hydratech Braking for their hydroboost system
Borgeson for their stainless steering shaft and u joints
Eddie Motorsports for their hood and trunk hinges and misc parts
TMI Products for their seats, door panels, and dash pad
Rock Valley Antique Auto Parts for their stainless fuel tank
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Old 11-05-2007, 08:29 PM
t/a-speed t/a-speed is offline
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I think the RPM range for the FIRST might fall a little short of what I can use.

The stealth looks good too but I'll have to save for a year to pay for it.

Jody, Nice cars man, just fantastic.
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Old 11-05-2007, 08:35 PM
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Quote:
Originally Posted by t/a-speed
I think the RPM range for the FIRST might fall a little short of what I can use.

The stealth looks good too but I'll have to save for a year to pay for it.

Jody, Nice cars man, just fantastic.
thanks, I appreciate it. Let me know if I can help.

Jody
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PAST CAR PROJECTS

Like Lateral-G on Facebook!

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SPECIAL THANKS TO:
Jacob Ehlers and Amsoil for the lubricants and degreasers for my 70 Chevelle project
Shannon at Modo Innovations for the cool billet DBW bracket
Roadster Shop for their Chevelle SPEC Chassis
Dakota Digital for their Chevelle HDX Gauge Package
Painless Performance for their wiring harness

Ron Davis Radiators for their radiator and fan assembly.
Baer Brakes for their front and rear brakes

Texas Speed and Performance for their 427 LS Stroker
American Powertrain for their ProFit Magnum T56 kit
Currie Enterprises for their 9" Third Member
Forgeline for their GF3 Wheels
McLeod Racing for their RXT street twin clutch
Ididit for their steering column
Holley for their EFI and engine parts
Lokar and Clayton Machine for their pedals and door and window handles
Morris Classic Concepts for their 3 point belts and side mirrors
Thermotec for their heat sleeve and sound deadening products
Restomod Air for their Tru Mod A/C kit
Mightymouse Solutions for their catch can
Magnaflow for their 3" exhaust system
Aeromotive for their dual Phantom fuel system
Vintage Air for their new Mid Mount LS front drive
Hydratech Braking for their hydroboost system
Borgeson for their stainless steering shaft and u joints
Eddie Motorsports for their hood and trunk hinges and misc parts
TMI Products for their seats, door panels, and dash pad
Rock Valley Antique Auto Parts for their stainless fuel tank
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