448/440

[heyoldguy]

I don't know if we've proven anything (proven build wise), but the latest 91 octane pump gas 440 with Victor heads (this pair flow equal to the new Trick Flow heads), solid flat tappet 255 @ .050 (equal to 242 @ .050 hydraulic) .604 lift w/1.6 rockers, 10.6:1, Edelbrock Performer RPM, 950 Quick Fuel.

492 lb-ft @ 3000 rpm start of pull
496 lb-ft @ 6100 rpm end of pull
557 lb-ft @ 3300 rpm
550 lb-ft @ 5100 rpm
572 lb-ft @ 3800 rpm
593 horsepower @ 5900 rpm

Would probably run pretty good in a Charger but I believe it goes in a '72 Satellite.

[303 Mopar]

I would be a tight fit in a 2nd gen Charger with that intake.

[Challenger340]

  Good Job Jim !

I would be a tight fit in a 2nd gen Charger with that intake.

There are lowered fibreglass "six-pack" style 4 BBL air cleaner bases that fit fine under the stock hoods with that Intake. 

[heyoldguy]

Darn it I suppose you are right! I best get in touch with the customer and see if he wants me to change the heads or intake manifold. Rats, one more headache to deal with. This height problem and the hemi is running leaner on two cylinders.

[heyoldguy]

Good Job Jim !

I would be a tight fit in a 2nd gen Charger with that intake.

There are lowered fibreglass "six-pack" style 4 BBL air cleaner bases that fit fine under the stock hoods with that Intake. 

Hey thanks, that means a lot. I can't help keep thinking of the 512 stroker you mentioned in another (cam?) thread and how that is the way they are supposed to run.

[BSB67]

Good Job Jim !

I would be a tight fit in a 2nd gen Charger with that intake.

There are lowered fibreglass "six-pack" style 4 BBL air cleaner bases that fit fine under the stock hoods with that Intake.  

Hey thanks, that means a lot. I can't help keep thinking of the 512 stroker you mentioned in another (cam?) thread and how that is the way they are supposed to run.

He has several options.  If there is something he wants in particular, it might take a little ingenuity.  Bottom line is he will have enough room between the top of a "hp" style carb and stock hood.  I've done it with a 1/2" spacer too.

[BSB67]

........solid flat tappet 255 @ .050 (equal to 242 @ .050 hydraulic).....
 

Curious, is this kinda your rule of thumb, or specific to this cam?  What is the lash setting for the solid FT?

When I'm trying to make an apples to apples comparison (i.e. measuring at the valve) I usually see 8° to 10° difference at the 0.050" number between FT hyd and solids.

[heyoldguy]

Custom cam I had ground, .018" lash.

[BSB67]

Thanks.  The other question?

........solid flat tappet 255 @ .050 (equal to 242 @ .050 hydraulic).....
 

Curious, is this kinda your rule of thumb, or specific to this cam?  

[tan top]

 

[heyoldguy]

Thanks.  The other question?

........solid flat tappet 255 @ .050 (equal to 242 @ .050 hydraulic).....
 

Curious, is this kinda your rule of thumb, or specific to this cam?  

I think it is important to measure the cam and I don't feel my thumb is an accurate enough ruler.

[XH29N0G]

  I understand measurements.  I have the same question though. 

Is there a difference in the way the values are reported for solid and hydraulic so that when a 255 @ .050 solid and a 242 @ .050 hydraulic when measured by you or others come out the same? 

[BSB67]

Thanks.  The other question?

........solid flat tappet 255 @ .050 (equal to 242 @ .050 hydraulic).....
 

Curious, is this kinda your rule of thumb, or specific to this cam?  

I think it is important to measure the cam and I don't feel my thumb is an accurate enough ruler.

Thanks.  Can you share the measurement method if it is different than at the valve.
Thanks

[heyoldguy]

Maybe I should have used my thumb. Damn! Thank you for being so polite. This time I forgot to divide the lash by the rocker arm ratio when I measured at the lifter. I should have used .011" (.061" lift at the lifter) instead of the .018" lash called for at the valve. Sucks to get old. Thank you.

[BSB67]

Got it, thanks.  On solids I like to get lobe numbers from 0.010" through 0.020" on 0.002" or 0.003" increments, and then again from 0.050" to 0.070", usually on 0.005" increments both lobes both sides so I can look back a get a good sense on how lash changes are affecting the seat and 0.050" numbers, and to compare to hydraulics.

Thanks for posting

[Challenger340]

just my thoughts,
But....
"Hydraulic" Lifter anything .... used in the same sentence with "performance" Cam...... is IMO, an oxymoron if there ever was one ?   

[heyoldguy]

just my thoughts,
But....
"Hydraulic" Lifter anything .... used in the same sentence with "performance" Cam...... is IMO, an oxymoron if there ever was one ?   

That's a big 10-4. Oh man, I picking up what you are laying down on that one. If fact you are so correct that might be a big 11-4 or 12-4!

[Paul G]

Old thread... What kind of vacuum did this engine make? Enough for power brakes?