65 Satellite w/ 318 poly

66 Sat said:

Ron I still think there's something not right with your poly - maybe cam timing or perhaps the exhaust is too big. I haven't got headers, just the restrictive factory manifolds and that's probably costing me some mid range and top end performance but with 3.23 gears it rips off the line. I've smoked some pretty decent cars up to 60 or so. What camshaft is in yours?

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Darter6 said:

Interesting, Poly's are fun because of the challenge .I like what's different (That's why I don't have a Camaro or Mustang)
For the street it will be great.The Weiand single plane is a bit lazy on the bottom end. I really like the new CP manifold.
A friend did a stroked 390 Poly in a 64 Dodge wagon with 3.23 gear.It's a killer on the street and to me it will go toe to toe with a big block.AS I said "On the street".
Like many have said above is it the right engine ? or is a 440 better. As far as cost and availability the 440 stands tall.
Some guys love to be different,I'm a fan of the unwanted Red Headed Step child.Slants,Poly's,even the B 361 that I have future plans for.
I would say,Do what your wallet allows.Then go for it !View attachment 1038739

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Darter6 said:

Interesting, Poly's are fun because of the challenge .I like what's different (That's why I don't have a Camaro or Mustang)
For the street it will be great.The Weiand single plane is a bit lazy on the bottom end. I really like the new CP manifold.
A friend did a stroked 390 Poly in a 64 Dodge wagon with 3.23 gear.It's a killer on the street and to me it will go toe to toe with a big block.AS I said "On the street".
Like many have said above is it the right engine ? or is a 440 better. As far as cost and availability the 440 stands tall.
Some guys love to be different,I'm a fan of the unwanted Red Headed Step child.Slants,Poly's,even the B 361 that I have future plans for.
I would say,Do what your wallet allows.Then go for it !View attachment 1038739

Click to expand...

moose1 said:

Wait a minute - what kind of manifold are you running? My '66 doesn't have a separate valley pan like that one...View attachment 1039075

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toolmanmike said:

I don't mean to answer for Darter6 but Chrysler Power has been producing these manifolds and aluminum valve covers for a few years now. I see on their website they are looking for a new foundry to produce them. https://cpwebstore.com/Poly

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Darter6 said:

Interesting, Poly's are fun because of the challenge .I like what's different (That's why I don't have a Camaro or Mustang)
For the street it will be great.The Weiand single plane is a bit lazy on the bottom end. I really like the new CP manifold.
A friend did a stroked 390 Poly in a 64 Dodge wagon with 3.23 gear.It's a killer on the street and to me it will go toe to toe with a big block.AS I said "On the street".
Like many have said above is it the right engine ? or is a 440 better. As far as cost and availability the 440 stands tall.
Some guys love to be different,I'm a fan of the unwanted Red Headed Step child.Slants,Poly's,even the B 361 that I have future plans for.
I would say,Do what your wallet allows.Then go for it !View attachment 1038739

Click to expand...

66 Sat said:

A poly stroker with 400hp and 400+ lbs ft should make for a fun street car. Talk to Gary Pavlovich once you have the verdict from the machine shop, and then cost out all the options. A 440 is obviously a good option, or a 408 small block crate engine. The stroked poly will be more effort to build and possibly more expensive, but you end up with something unique, that looks great when you pop the hood.
I love my 318 poly but I wish I'd gone the extra mile and stroked it.

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Gary Pavlovich said:

Very interesting thread on the Poly engine. To cut to the chase, I always say that if you want more than 400-425 HP @ 5700RPM & 440-470TQ @ 3600RPM from the indigenous Poly in your Mopar then by all means go for the Big Block 440. The Torque is high & flat...about 400ft.lbs. at 2200rpm. You will be hard-pressed to get traction with a 390" (.030" overbore) Stroker Poly and the cost is reasonable & comparable to the LA build. Given, the intake/cam is more expensive but that appreciate cost increase must justify/satisy one's need for a unique and massive looking powerplant under your hood; 1.5" wider than a 440. The aforementioned HP/TQ is easily created & replicated each every time with many of the common LA parts 4" cast steel SCAT 340 Stroker crank (approx. $400), Eagle SIR LA rods (approx. $315)...SCAT is better IMHO, M72HV Oil Pump (...$85), all KING or Clevite rod/main/cam brgs, same .250" seamless pin dbl. roller timing set...the "rub" expense comes primarily with the intake selection but the best bang for the buck is to use the ancient but powerful factory dual quad intake...yes, the last factory dual quad build we did made 463TQ @ 3500rpm/468 peak TQ @ 4100rpm & 421HP @ 5500rpm...and these dual quads are plentiful and I have a friend selling one for a very reasonable $300. This 421HP/463TQ Poly Stroker engine has 9.5 compression/ported heads/284adv .510" lift ([email protected]") flat-tappet Poly Cam, TTI Headers...the basics. However, the Poly has a superior chamber design (polyspherical) to the Wedge motor (I also run a 340 Dart) and has an excellent BMEP cf with the HEMI and the Poly ports have extreme velocity w/o stall; up to 1" lift. Yet a paltry 210cfm intake/160cfm exhaust flow @ .500" yields the aforementioned power; although for the sake of exaggeration, we have a CNC program and other "hand-porting" techniques to get us up to and over 600HP & 580TQ if needed/wanted; see Buck Hinkle 426 Poly Stroker motor article. Yes, the camshafts are more expensive but you can circumvent that by regrinding your old cam core...now you just undercut the price of the LA HP Cam...although new HP Poly Cams are available as well as Poly Roller Cams...I have several...and the Poly Roller Cam is created by using the LA Round Lobe Billet Core...therefore same cost as the LA Roller Cam. You can also achieve the 400+HP & TQ using the stock 1.84/1.56 Poly valves...just need the porting expertise. OK...you will need custom Poly pistons; very reasonable from Auto Tech for approx. $650 a set....

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