Cam suggestions for 331 SBF

[F-BIRD'88]

Moving the cam back to straight up 110/110
or a hair further retarded 112/108 should show you a effect torque shift .. Then, setting lash at say .009" to .012" COLD

will show even more top end shift.. Much like if installing
a bigger cam.. You will give up some low end power.

This can help indicate if the motor wants for "more cam"
If you don't like it OVERALL ,put it back.

You need timed acceleration test runs to see if a real
car perf improvement beyond a change in seat of the pants
"butt dyno" driving impression .

Get some slicks for testing that. If the tires have no traction

its meaning less.

Dyno testing will show the power shift but drag testing shows
if the result was a ♠♠ OVERALL GAIN ♠♠ in real car perf
or not.

You will find out what works and what does not on your car.

[F-BIRD'88]

You need some valid baseline perf tests first.
Then play with the cam for +/- perf effect.
Don't rxpect difinitive results without good tire traction.
(slicks or drag radials and traction bars)

[F-BIRD'88]

Do not use drag tires on a chassis dyno.
It kills the soft tires and can render them unsafe.
It is really hard on those tires. BAD.

Dyno rollers are not like driving on a road to a car tire.
Just so u know..

[F-BIRD'88]

Do not assume the +4° or -4° multi key way timing gears are
actually accirate.. verify cam timing change based on ,050 timing events with degree wheel and dial indicator.
If u use this to move the cam check the result.

You can read off the push rod tip if carefull.
Best done with timing gear offset bushings and a cam bolt locking plate.

[piston guy]

If you retard the cam and the ET gets better , your cam is too small unless it's because the tires aren't spinning. Your combination should be well into the 11's with the AFR head. The cam is fine. Before changing it I would try a higher ratio rocker and see those results. If it goes faster , you can use more cam. A good guy in your area is Phil at PMR in CT. The 331 in his early Falcon is similar and he has similar gearing. It runs in the 10's and is street driven to Lebanon Valley and back to CT.