CanCritter
Senior Member
that's good point...wouldn't mind knowing the diff between the poly and a 318 myself
The sounds of a poly
- Thread starter 1Fury1
- Start date
300rag
It's Not Going to Shift Itself
Here's a write-up on the Poly from Allpar
Polyspherical head engines
and the LA
LA - Chrysler small block V8 engines
1Fury1
Slab Side Slacker
http://www.streetmusclemag.com/tech...-318-polysphere-and-how-come-nobody-likes-it/
There's been lots written on poly performance. They have a long flat torque curve as shown in the dyno numbers:
1Fury1
Slab Side Slacker
Sorry to rekindle an old post but to close the loop on this question here it is verbatim from the engine builder:
"The camshaft in your engine is a Racer Brown ST-22 which has 242 degrees duration @ .050 lift and a lobe lift of .340 inches. That calculates to .510 lift with a 1.5 rocker ratio less the lash. The valve lash is .016 intake and .018 exhaust set cold-------but, I always set both at .014 cold----seems to be better to me."
Very nice car. Love the paint job. All I can see is the individual space beside the rear lights being black though. Would make that rear end stand out. Just my opinion though. That's one nice Fury. I'm in the middle of doing up my Poly to sound like that. Can't wait. Thanks for posting.
mr. fix it
Old Man with a Hat
polyspherical combustion chamber
65sporty
Old Man with a Hat
Your motor does sound really good
You may also hear it referred to as a semi-hemi. The new hemis are actually polys. Both a true hemi and poly have advantages over wedge motors in potential gas flow, all other things being equal, due to the arrangement of intake and exhaust valves. Wedge motors, the gases have to reverse flow so to speak to get back out, hemis flow across and poly is between the two. That description is a slightly exaggerated but that that's the gist of it. It's why hemi heads are gigantic and even poly heads are pretty large compared to a wedge.
1Fury1
Slab Side Slacker
Very cool. Just one word of advice (and because it's a pet peeve of mine)- turn the phone sideways so the whole car fits in the frame and it will also display properly on Youtube and everybody else's computer screen. Thanks!
OK here it is sideways.
livininharrow
Senior Member
I love that fury. sounds even better sideways.
GJS
Senior Member
DAMN!
Vanish
Member
Sounds and looks great
Nice! That's what I'm doing to mine. What intake are you going to run if you don't mind me asking?
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