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Discussion Starter · #1 ·
I post on a few different sites so if I'm repeating myself, please forgive me. :)

Okay, I'm assembling a 532 and originally ordered pistons with the standard valve layout to use with a set of Scotty's ported big-valve D0VEs. Pistons are forged Icons. The short block is already assembled.
Since then, I have acquired a set of AFR 280s and will need to cut new intake notches in the pistons to match the AFRs.
This is a pump gas street engine. Compression around 9.5-9.7.
I would like to make 550-600 HP at the rear wheels through a C6 if possible.

My question is, will the D0VEs meet this requirement?
I would just as soon not have to notch the pistons, but I do have the Lindy in-head cutter to perform this process.

I realize both of these heads are "small" for a stroker engine but they're what I have.

If my horsepower target is too optimistic then I'll take what I can get with what I have. Don't need to get too wrapped up in peak numbers. Torque and throttle response is where it's at for a street engine anyway.
 

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The iron heads will make good power but NOT IN THE SAME league as the AFR's.
Those AFR280's will support a bunch of power.

With a 219 @ .050" intake lobe and mid nines static c/r on pump 87 we make 565 hp in a 521" work / towing engine. A couple of steps up is an easy 600 hp.

Notch the pistons.

Your modest static c/r is going to limit the recommended amount of cam duration so your RWHP figures are optimistic. 500 to 550 is reasonable I suppose.

Shoot for 650 at the crank. You will need a [email protected] .050" intake lobe.

For the 750 to 800 crankshaft hp needed to achieve your rwhp figures you really need 11 to 1 static and 260 to 266 intake duration @ .050" AND the single dommy AFT intake.







Scotty J. "AKA" The "Mad Porter"
"EMC 2006" 3rd place finisher
Ported BBF iron head specialist & Aluminum heads from all sources.
Custom ground cams
See our products in the Vendor for sale section
Customized crate engines
ParklandAutoMachine.com
R-H-P.biz
"Parkland Performance Auto Machine" Formerly RHP
(253)-988-6648
Parkland Auto Machine
 

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366 Posts
Discussion Starter · #3 ·
The iron heads will make good power but NOT IN THE SAME league as the AFR's.
Those AFR280's will support a bunch of power.

With a 219 @ .050" intake lobe and mid nines static c/r on pump 87 we make 565 hp in a work / towing engine. A couple of steps up is an easy 600 hp.

Notch the pistons.

Your modest static c/r is going to limit the recommended amount of cam duration so your RWHP figures are optimistic. 500 to 550 is reasonable I suppose.

Shoot for 650 at the crank. You will need a [email protected] .050" intake lobe.








Scotty J. "AKA" The "Mad Porter"
"EMC 2006" 3rd place finisher
Ported BBF iron head specialist & Aluminum heads from all sources.
Custom ground cams
See our products in the Vendor for sale section
Customized crate engines
ParklandAutoMachine.com
R-H-P.biz
"Parkland Performance Auto Machine" Formerly RHP
(253)-988-6648
Parkland Auto Machine
Perfect. That's what I needed to know.
I will be contacting you for a camshaft.

Thanks Scott, I appreciate it.

Bruce
 

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And since I'm a novice at piston notching, how deep do I need to cut?


The same depth as the existing notch should work.






Scotty J. "AKA" The "Mad Porter"
"EMC 2006" 3rd place finisher
Ported BBF iron head specialist & Aluminum heads from all sources.
Custom ground cams
See our products in the Vendor for sale section
Customized crate engines
ParklandAutoMachine.com
R-H-P.biz
"Parkland Performance Auto Machine" Formerly RHP
(253)-988-6648
Parkland Auto Machine
 
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