BUILD THREAD Street/Strip Cutlass Build: Race it, break it, fix it, repeat.

[bikerlaw]

Wow......
What an awesome thread. The fact you started this thread 9 years ago, and are still going faster and faster......with the same car.....
Is just cool on an epic scale. I love what you've done so far, and great updates.

 

[Flyers9928]

Looking good man ! now you have to make a "After" pass !

 

[64nailhead]

I like it.

You're only a couple of parts away from 10's. A solenoid, dry plate, line, etc. Should be less than $500 to throw a 100-300 shot on top of what you have. The Holley and your pump should easily support a dry shot in that range.

Looks great and let's see some results.

Have you started/drove it yet?

 

[Kwik_Cutty88]

Wow......
What an awesome thread. The fact you started this thread 9 years ago, and are still going faster and faster......with the same car.....
Is just cool on an epic scale. I love what you've done so far, and great updates.

Thanks! Phew, 9 years already? Man I'm getting old. I'll never get rid of this car.

Looking good man ! now you have to make a "After" pass !

This winter hopefully! We have that luxury in the south where we can make a lap or two in December/January. So far I think this system will humble me into what a terrible carb tuner I am.

I like it.

You're only a couple of parts away from 10's. A solenoid, dry plate, line, etc. Should be less than $500 to throw a 100-300 shot on top of what you have. The Holley and your pump should easily support a dry shot in that range.

Looks great and let's see some results.

Have you started/drove it yet?

100 shot was the plan to start.

I drove it around 30 miles so far. I'll drive it to work tomorrow. Tonights project was to figure out why when the car sees around 2500 RPM sustained for a few seconds it seems to hang up there and not return to idle, despite having 0% TPS. I smoothed out the idle table, and that seemed to help with the harsh transitions between "cruise" timing and "idle" timing. But what really seemed to make a difference (no load just messing around in my driveway) was adjusting some IAC parameters. I'll see if it has improved (or maybe I made it worse) tomorrow.

I'm trying to pace myself here. I find that I can quickly go down the rabbit hole on the pages and pages of different tables and settings. I think if I tackle one problem at a time and really understand it, maybe I'll be worth something when it comes to EFI. But right now I'm definitely a button pusher.

 

[scarborough]

Thanks! Phew, 9 years already? Man I'm getting old. I'll never get rid of this car.

This winter hopefully! We have that luxury in the south where we can make a lap or two in December/January. So far I think this system will humble me into what a terrible carb tuner I am.

100 shot was the plan to start.

I drove it around 30 miles so far. I'll drive it to work tomorrow. Tonights project was to figure out why when the car sees around 2500 RPM sustained for a few seconds it seems to hang up there and not return to idle, despite having 0% TPS. I smoothed out the idle table, and that seemed to help with the harsh transitions between "cruise" timing and "idle" timing. But what really seemed to make a difference (no load just messing around in my driveway) was adjusting some IAC parameters. I'll see if it has improved (or maybe I made it worse) tomorrow.

I'm trying to pace myself here. I find that I can quickly go down the rabbit hole on the pages and pages of different tables and settings. I think if I tackle one problem at a time and really understand it, maybe I'll be worth something when it comes to EFI. But right now I'm definitely a button pusher.

nice build. what size tires are you running and any rubbing on the inside of the tire and frame.

 

[Kwik_Cutty88]

nice build. what size tires are you running and any rubbing on the inside of the tire and frame.

My street wheels and tires are:

Front- 15x7”, 3.5” backspacing. 205/70-15 (I also have run 235/60/15)

Rear- 15x7 3.5” backspacing. 275/60/15. If you put a few people in the back it will rub, otherwise no.

 

[scoti]

So.... I caught on to this thread just as a result of the most recent updates. Today, I felt the need to start from the beginning to understand some history on the journey. Pretty dang good read.

I didn't see it mentioned.... I know it was supposed to be a 383 & wasn't. The changes/upgrades earlier seemed to work well for the combo but I never saw exactly what cam profile that was utilized? It sounds pretty decent in the clips where you were knocking @ 12's door.

I'll be watching as you continue to update w/the newest EFI combo. Well done!

 

[scarborough]

My street wheels and tires are:

Front- 15x7”, 3.5” backspacing. 205/70-15 (I also have run 235/60/15)

Rear- 15x7 3.5” backspacing. 275/60/15. If you put a few people in the back it will rub, otherwise no.

I notice you are using kyb rear shock , I'm in the process of making changes to my suspension, just wondering with the tire setup you're running are you using stock front and rear spring .

 

[Kwik_Cutty88]

So.... I caught on to this thread just as a result of the most recent updates. Today, I felt the need to start from the beginning to understand some history on the journey. Pretty dang good read.

I didn't see it mentioned.... I know it was supposed to be a 383 & wasn't. The changes/upgrades earlier seemed to work well for the combo but I never saw exactly what cam profile that was utilized? It sounds pretty decent in the clips where you were knocking @ 12's door.

I'll be watching as you continue to update w/the newest EFI combo. Well done!

Thanks for reading. The cam is a Comp Cams "Thumpr" Hydraulic roller. Here is the profile:

Duration at 050 inch Lift:
227 int./241 exh.
Advertised Intake Duration:
283 int./303 exh.
Valve Lift with Factory Rocker Arm Ratio:
0.513 int./0.498 exh.
Lobe Separation (degrees):
107

 

[Kwik_Cutty88]

I notice you are using kyb rear shock , I'm in the process of making changes to my suspension, just wondering with the tire setup you're running are you using stock front and rear spring .

Sure. The front springs are stock that I cut about a 1/2 coil out of. It brought the front down about 1/4". The front shocks are old (I probably need to replace them), I think just parts store brand stock replacements. The rear springs are stock, with KYB Gas-a-just shocks.