Calderone

Since i bumped the timing to 10° car feels much responsive
i will try to get it to 12° with no detonation.
Tried to avoid wheelspin as much as possible
Gradual launch on drag radials at 28 psi.
GTech says 4.94 seconds !
I'm improving !

what you think ?

856SPEED

cant view the video for some reason?? sounds good though....

mcm95403

Sounds and looks good. Interesting to watch your tach. Which torque converter do you run?

Calderone

What i don't like about the '87 display is the lag that they show the numbers
it's not like one number after another , it jumps from 0 to 30 then 65 or so ...
same thing for the speedometer.

I'm running a 3200 Precision Industries Vigilante

89L98TPI

Looking good Sammy

Calderone

thanks , i think i can do better
i did other launch later , this time full throttle , spinning a lot and i did worst.
So it's all on the launch , find the sweet spot when you don't spin, then
knowing when to floor it , seems like im getting closer to what my combo
is supposed to do.

mcm95403

That explains it Now I know to go ahead and get the 2500 stall that Hughes told me to get.

THE 383 admiral

Your welcome.. with the initial adavance.. I had plenty of tune time on my HSR

383vett

Looking good Sam. Keep at it.

tombrammer

Bumping the timing at idle really does help with a bigger cam than stock. I remember when I figured this out with a 400 SBC I built years ago. The thing was a dog at low rpm with stock timing of 6, I finally ended up with 12 if I remember right, it really did wake up the motor.

Calderone

Yes, i was told that several times, but i did and felt no difference (maybe because the tranny was going south) so i decided to leave it at 6°.
Forgot about it and adjusted it one year later, im pleased !
i have the 219 Lingenfelter cam :



Stock L98 cam
Duration @ .050", 202/207
Lift: .413/.428 ,
114.5 LSA



219 cam
Duration @ .050", 219/219
Lift: .525/.525 1.6 Rockers
PART NUMBER 74219 GROSS VALVE LIFT INT. 0.525
GRIND GROSS VALVE LIFT EXH. 0.525
ENGINE SBC INTAKE OPEN 32
ROCKER RATIO 1.50 INTAKE CLOSE 68
ROCKER RATIO 1.50 EXHAUST OPEN 76
CAM LIFT INTAKE .350 EXHAUST CLOSE 24
CAM LIFT EXHAUST .350 OVERLAP@ LASH 56
LOBE SEPARATION 112 INTAKE PHASE 108
ADV. OR RET. DEG. 4 ANGLE or CENTERLINE
INTAKE "LASH" DUR. 280
EXHAUST "LASH" DUR. 280 EXHAUST PHASE 116
INTAKE DUR @ .050" 219 ANGLE or CENTERLINE
EXHAUST DUR @ .050" 219

GREGGPENN

I assume you're still running the same bin as you bought from Alvin (a year/two ago)? Not much luck figuring out TunerPro?

GREGGPENN

With a stock or mail-order bin?

Calderone

Alvin bin ! yes i am
i change computer last year and i haven't datalog the car again

pmihaltian

VERY

dan_t

How do you know your not getting KNOCK if you haven't datalogged?

Calderone

audible knock i meant , i guess i'm getting knock counts anyway

GREGGPENN

Learn how to use TunerPro Sammy. Or, datalog and have Alvin burn another bin. Advancing the dizzy because you gave up on tuning isn't the right way to do this. Seriously.

If I were to guess. you're running a bit more responsive off-idle...Maybe even faster up to 3k rpms. After that, I bet it feels flat and might be going slower.

Calderone

Thanks Gregg , no i have not gave up on that, i will datalog to check what is
exactly going on there. i want the best of my set up and i'm sure we can do better
and that's with fine tuning only !

Katherinejjm

Sounds and looks good.