470" Source Stroker Kit Opinions

[66Satellite47]

Just one point of experience. My 500/440 was a true 10.5, EDE RPM heads, ran just fine on the local 93 premium. Flat top pistons about .010 down, .039 gaskets, fairly mild Comp solid cam.

 

[hunt2elk]

What gas do you plan to run? Why is it so important to get the compression down?

91. I have had several mid 10:1 engines that I struggled with detonation on our 91 gas. Always had to drop the timing a couple degrees and slow the advance curve. My last 2 motors 9.6:1 and 9.7:1 have not had any issues running the timing where they made the most power on the dyno. I've just decided I want to be under 10:1. I'm sure gas quality will not be getting better as time goes on and the power loss is very small when lowering your comp ratio 1/2 point.

 

[68 HEMI GTS]

91. I have had several mid 10:1 engines that I struggled with detonation on our 91 gas. Always had to drop the timing a couple degrees and slow the advance curve. My last 2 motors 9.6:1 and 9.7:1 have not had any issues running the timing where they made the most power on the dyno. I've just decided I want to be under 10:1. I'm sure gas quality will not be getting better as time goes on and the power loss is very small when lowering your comp ratio 1/2 point.

Got it, I’m not a big fan of taking quench out either. If the 470 gets you there it makes sense.

 

[wagonman]

My Duster 470 has pretty much the same combo as yours but different cam and intake. Comp XE282s-10 a Weiand dual plane and a 3310 Holley. Dang near 550 HP and torque @ 5500 with way more if RPM if needed. The cork is the intake and carb setup. I have a Street Dominator and a 850 DP I will try if our track ever gets a timing system to do back to back tests. With 3.90s it is a fun car on the street and I need to start a Go Fund Me for tires. Should be a 600 HP engine with the induction change and more Torque to boot. It also has good street manners, idles @ 850 with a decent lope. Source says the 470 is better for a street app.