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Discussion Starter · #1 · (Edited)
So I'm thinking about stroking

My Engine,
477 (.080 over)
10.2 comp (heads and block decked)
D3 heads ported (by Blackwell) 2.19 , 1.76 valves
SRP forged pistons , eagle crank , scat H rods.
HFT cam Duration 310/320 (244 , 254 @ 50) Lift .588/.614.
Torker , 850 DP.
MSD 7AL 2
Makes 533 lb-ft and 533 hp.

I'm thinking either 4.5 (557) or 4.6 (570) stoker
With custom SFT cam around 260 to 270 @ 50. A new carb (maybe 1050cfm)
Max effort iron heads can support 700hp on strokers or in race applications. My heads must be working fairly well to be making over 500hp on my current street engine.
Focusing the stroker build more around torque and keeping the RPM under about 5800rpm what is the torque potential?
Wanting Max torque at 4500rpm with good torque from 2500rpm.
What is the torque potential of D3 heads with decent (not max effort) port work and large valves on a
stroker (557-570) bellow and up to 4500rpm.
 

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A few pictures.
This car gets driven lots.
It's very well sorted and reliable.

Id be happy with 680lb-ft at 4500rpm?
If decent lager valve D3's can support 5800rpm on a 570 stroker?
With the correct cam and 10.5 to 1.
Your goal should be easy. Ask the mad porter if anything else can be done to your heads. It's all pretty sound now.
Are your rear tires the olo' M/T sportsman pro street tires ?
Nice ride too. Any vids of it revving up or dragging.
 

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Discussion Starter · #4 ·
Your goal should be easy. Ask the mad porter if anything else can be done to your heads. It's all pretty sound now.
Are your rear tires the olo' M/T sportsman pro street tires ?
Nice ride too. Any vids of it revving up or dragging.
I do on my phone.
Not sure how to upload.
Think they would have to go on YouTube then a link shared?
 

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I do on my phone.
Not sure how to upload.
Think they would have to go on YouTube then a link shared?
I know you can, but you're talking to a guy that does not,....have a cell phone. 😀 With my business at home we don't needs cells. But,..there's been many times that I wish I had one. The battery died in my 427 Shelby Cobra on a dark highway at 1:00 am ! 😬 eek. Two cars went by and I flicked my lighter quickly like a flash at them, neither stopped ! 🤬
 
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