393w Camshaft & Opinions

Stang9597 · Jul 5, 2017

I am building a 393w for my 1995 gt. '94 up 351w block. I am needing help with the camshaft, as i have everything else and i'm wanting to get the motor finished ASAP.
393w
Scat rods and crank
Mahle forged pistons
Edelbrock performer rpm heads(ported)
Edelbrock air gap intake (ported)
Holley Double Pumper(i have both a 750 and an 830)
All MSD Ignition
Hydraulic Roller cam
Under 11:1CR
I spoke with lunati and my cam specs are going to be as followed( unless someone else convinces me otherwise)
240/248 @.050
.580/.580 lift
107 lsa

Where can i improve in the cam specs? More or less duration? Tighter or wider lsa? Lunati is saying the range on this cam will be 2500-6800rpm. Will pump gas still be an option here?
Let me know what you guys think

Stang9597 · Jul 5, 2017

And it will be 4.10 rear gears through an 8.8

Stang9597 · Jul 5, 2017

Also the intake valves are bored 2.02, no more 1.9's

Gear grabber · Jul 5, 2017

Street car ? Power brakes ?

Stang9597 · Jul 5, 2017

Power brakes and ill run a hydroboost if a vacuum canister isnt good enough( doubt it will be) and yes it will be a street car. Not my daily driver so i am willing to sacrifice driveability.

Gear grabber · Jul 5, 2017

That's where I was going,tight lsa lower vac. at idle.
I have a little more duration, 244/252,bigger intake,
(ported super vic. 950 QF) and 112 lsa. At 13.5 ish afr
pulls 11 inch's @ 900 idle.

Stang9597 · Jul 5, 2017

Yes, the 112 would help me with my vacuum. But my engine builder says to go with at least a 108 but is wanting me to go with a 107.. and the idle would be sick. I know im going to get slammed for this... but im looking for a good mix of performance and a nasty idle... gear grabber, whats your CR and what octane do you run?

Stang9597 · Jul 5, 2017

With my cam specs around what rpm will my peak power be? Is the 2500-6800 rpm estimate from lunati about correct? Cause my engine builder has a cam with very similar specs and a similar engine (418" stroker) and he spins his to 7400 rpm.. dont really want to do that as i will be babying a t5 till i get the money for a tko

Gear grabber · Jul 5, 2017

11-1,92 pump.
What headers are you using ?

Stang9597 · Jul 5, 2017

1 3/4" long tubes to 3" with x pipe

Stang9597 · Jul 5, 2017

Will the specs of my cam(hydraulic roller) be in the 2500-6800 rpm, be somewhat streetable, and.. dont shoot me.. give a nasty idle? If not what can i change?

Gear grabber · Jul 5, 2017

Dual plane intakes work very well on the street,
but I imagine it will run out of breath before 6800.

Stang9597 · Jul 5, 2017

Thats what i figured. What about the driveability and idle? I will be calling lunati in the morning to have one custom ground

Gear grabber · Jul 5, 2017

You might want to speak to Ed Curtis at Flow tech induction,
about a custom cam. Any cam is only as good as the information
you supply.

revhead347 · Jul 6, 2017

Hmm, kind of small heads for that big of a cam. A single grind lift is what I would expect out of Lunati. Not trying to be condescending, but I would be more worried about the heads than the cam. Just about any cam is going to suck those heads dry well before 6000rpms.

Kurt

TOOLOW91 · Jul 6, 2017

Get in touch with Brian Freezy . He will set you up with a custom cam .If you need his info shoot me a message.

Stang9597 · Jul 7, 2017

Yes, that is my main concern as well. But, my engine builder has an engine with similar heads, similar cam and his is still breathing well past 6k.. well past 7k..

Black1987 · Jul 7, 2017

Stang9597 said:
Yes, that is my main concern as well. But, my engine builder has an engine with similar heads, similar cam and his is still breathing well past 6k.. well past 7k..

Does the timeslip and dyno graph support this as well?

Seat of the pants feel sometimes lies to us men haha jk.

But real I'm just curious what the combo makes in the curve powerwise.

Stang9597 · Jul 7, 2017

That was all butt dyno and yes you have a good point. Hasnt been on a real dyno yet

Black1987 · Jul 7, 2017

Stang9597 said:
That was all butt dyno and yes you have a good point. Hasnt been on a real dyno yet

Does he have a wideband in the car? If so what were the AFR in those pulls?

393w Camshaft & Opinions

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Apparently my ex-husband made that mistake.

If you're the village idiot what's that make me?

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my wife Bedazzled my input shaft

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my wife Bedazzled my input shaft

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