Chick,
The Poly head is an excellent design and you are right, only held down by
the stock configuration of the iron head for anything over 500HP but unless you
are building a car for ultimate Drag Strip Duty or must have more HP &
Torque than the majority of “Rodders” then I think it is the best bang for the
buck to build a Stroker Poly or high-revving stock stroke Poly. There are
“ways” to get the Poly to 600HP but if I did, it would only be to say “I told
you so...” but that wouldn’t please me. Bottom line ALL the Mopar Small
Block and Big Block engines are great performers with the right parts and can be
built for any (practical) level of HP and Street or Ulitimate Strip Racing but
don’t overlook the Poly and if it meets your HP/Torque goals at the price point
you can afford, go for it; and I will help where I can.
Check out the Dyno Sheet on my previous e-mail...and the engine specs;
quite a conservative build for the output achieved.
Gary Pavlovich
Sent: Thursday, June 30, 2011 7:03 PM
Subject: Re: LeRoars current status
Gary,
You have a heck of a story on that engine on the
web. I found one place that said the Poly chamber is better than a Wedge
chamber and more like a Hemi than a Wedge. The story also said it was a
shame that engine got overlooked in the speed shop dept. because there were so
many other engines to hotrod that the Poly got mostly overlooked by the speed
crowd. But some people, like you, applied basic HP and torque making parts
(even if you had to make them yourselves) and showed people a glimpse into what
a Poly was capable of. If you keep it all Poly you get choked down by the
heads and valve size, but you can make it better than stock, by
far.
Your info on the rocker arms is excellent. I
know Hughes aren't the only good rocker arms on the market. A few years
back a place called Diamondback Engines from Texas entered Mopar Muscle's engine
contest. Diamondback got bad rocker arm shafts from Comp Cams but they had
a spare set with them. They got another bad set and were so upset they got
DQ'd that they went to the Comp Cams factory and asked what was going on.
It seemed that Comp Cams farms out their shafts and got a bad bunch in.
Diamondback had the story on their web page for a while. Then they got a
hold of some Hughes rocker arms and their engine, run on a different dyno, would
have made second place if the Comp Cams parts worked properly. That's what
most of those guys use, Comp Cams rocker gear and cams. Hughes makes only
Mopar engine parts and their cams and rocker arms, port work, everything, is
just great. They will build you heads any way you want them. Plot
out an engine for a special thing like street, street/strip, bracket racing and
will test the engine on a dyno and find out what works best. If you have
the money. It always boils down to that.
I'll tell my friends about those old Poly engines
and they will think I'm crazy...until I show them some of your stuff on the
web. It will be fun watching their eyeballs pop out.
Thanks a lot,
Chick
----- Original Message -----
Sent: Thursday, June 30, 2011 8:22
PM
Subject: Re: LeRoars current status
Chick,
The Poly 318 is like any other LA engine with the same production
variances in rocker ratios. Yes, the fix with the LA is to install the
blueprinted aftermarket Hughes (or other trusted brands) to get a true 1.5 or
1.6 ratio.
Mancini Racing has a nice write-up on the Hughes 1.5/1.6 rocker kit at
$479. The Poly 318 has a blueprinted rocker assembly available in a
non-roller 1.5 or 1.6 ratio with hard chromed shafts, fully bushed & trued
rockers, improved jam-nut adjusters...for approx. $539; a bit more but not
outrageous. The other offering is a nice set of hard chromed
shafts/fully bushed & trued OEM ratio rockers/with improved jam-nut
adjusters for $298; a very good deal and nice setup to replace the old-worn
Poly 318 rocker assembly with their loose or bottomed-out/weak stock
adjusters.
Of course, there was a custom run of full roller tip Poly Roller Rockers
done recently for some of our “adventurous” HIGH HP Poly engine guys.
By the way, I think the 318 Poly is the best HP/Torque engine for
indigenous powerplants. Less expensive than swapping an LA or Big Block
into the 62-65 Mopar if you are satisfied with making and easy 400-450 HP and
the same torque vintage motor. Realistically, it is hard to beat the
following stats on a mildly built Poly Stroker motor;
375HP Average from 3700-5700rpm
428ft.lbs. Average Torque from 3400-5400rpm
Nothing beats the simultaneous high/flat HP/Torque curve for the cost
outlay/uniqueness of this motor.
Gary Pavlovich
Sent: Wednesday, June 29, 2011 9:04 PM
Subject: Re: LeRoars current status
Exactly right, unless you use the "LA" style
318. The old blocks are pretty much the same but the heads on the newer
blocks (318) fit only the new block and the old poly heads fit only the old
poly block.
So performance mods are up to you on a pure poly
318. However, if you use the other block so you can use the heads then
Hughes has rocker arms and shafts for the more modern heads.
Chick
----- Original Message -----
Sent: Wednesday, June 29, 2011 9:01
PM
Subject: Re: LeRoars current
status
They don't have them for the poly.
Rich Kinsley '64 Dodge Polara 4dr 318poly w/goodies
On Tue, Jun 28, 2011 at 5:02 PM, Stephen Andrachek
<s.andrachek@xxxxxxxxxxx>
wrote:
This is why I keep telling people to get
Hughes Rocker Arms and Shafts. You get a true ratio of 1.5 or 1.6
(your choice), no needle bearings to break and they ain't free but are
worth the money. The stock rocker arms are hard shaft and hard
rocker arm. Hard on hard causes wear and galling.
All I can say to anyone building a Mopar
motor (any size, small or big block) is take my advice, please (on the
shafts and rocker arms).
Chick
----- Original Message -----
Sent: Tuesday, June 28, 2011 12:58
PM
Subject: LeRoars current
status
Hi Folks,
I thought I'd send a note to let everyone know what's going on with
LeRoar. I tried my hand at cam degreeing by first checking the original
cam. I found it only had .396" lift instead of .450". That was due to
the rocker ratio being 1.38 instead of 1.5 as advertised. So I
guess it's amazing it ran as good as it did with such a small lift. I
also installed the new cam and tested it on #1 cylinder and found that I
will have to wait for the new heads before I can use the new cam. The
springs will bind as there is only .008" clearance at max lift. I'd
probably bend a pushrod. I pulled the heads now and will be removing the
engine soon. I want to solve some oil leaks and I think the front trans
seal is leaking. I'm going to leave the trans in the car.
I hope I will be able to race at our MidAmericanMotorplex off I-29
at the Glenwood, IA exit. I-29 is closed both North and South of it due
to flooding. So far I think it's OK but I may have to build a
marine poly if the river keeps rising. Dodger volunteered to transport
LeRoar to the 1/4 mile track at Kearney, NE if MAM isn't running.
Kearney is a bit far to drive a car to race. One hiccup and you have a
long walk.
The Summer is beautiful, albeit wet. Get those Mopars on the
road.
Rich Kinsley '64 Dodge Polara 4dr 318poly w/goodies
--
--
Please address private mail -- mail
of interest to only one person -- directly to that person. That is, send
parts/car transactions and negotiations as well as other personal
messages only to the intended recipient, not to the Clubhouse public
address. This practice will protect your privacy, reduce the total
volume of mail and fine tune the content signal to Mopar topic.
Thanks!
1962 to 1965 Mopar Clubhouse Discussion
Guidelines:
http://www.1962to1965mopar.ornocar.org/mletiq.html and
http://www.1962to1965mopar.ornocar.com/general_disclaimer.html.
--
You received this message because you are subscribed to the Google
Groups "The 1962 to 1965 Mopar Mail List Clubhouse" group.
http://groups.google.com/group/1962to1965mopars?hl=en.
--
--
Please address private mail -- mail of interest to only one
person -- directly to that person. That is, send parts/car transactions
and negotiations as well as other personal messages only to the intended
recipient, not to the Clubhouse public address. This practice will protect
your privacy, reduce the total volume of mail and fine tune the content
signal to Mopar topic. Thanks!
1962 to 1965 Mopar Clubhouse
Discussion Guidelines:
http://www.1962to1965mopar.ornocar.org/mletiq.html and
http://www.1962to1965mopar.ornocar.com/general_disclaimer.html.
--
You received this message because you are subscribed
to the Google Groups "The 1962 to 1965 Mopar Mail List Clubhouse"
group.
http://groups.google.com/group/1962to1965mopars?hl=en.
-- Rich Kinsley '64 Dodge Polara 4dr 318poly
w/goodies
--
Please address private mail -- mail of
interest to only one person -- directly to that person. That is, send
parts/car transactions and negotiations as well as other personal messages
only to the intended recipient, not to the Clubhouse public address. This
practice will protect your privacy, reduce the total volume of mail and fine
tune the content signal to Mopar topic. Thanks!
1962 to 1965
Mopar Clubhouse Discussion Guidelines:
http://www.1962to1965mopar.ornocar.org/mletiq.html
and http://www.1962to1965mopar.ornocar.com/general_disclaimer.html.
--
You received this message because you are subscribed to the Google
Groups "The 1962 to 1965 Mopar Mail List Clubhouse" group.
http://groups.google.com/group/1962to1965mopars?hl=en.
--
-- Please address private mail -- mail of interest to only one person
-- directly to that person. That is, send parts/car transactions and
negotiations as well as other personal messages only to the intended
recipient, not to the Clubhouse public address. This practice will protect
your privacy, reduce the total volume of mail and fine tune the content signal
to Mopar topic. Thanks! 1962 to 1965 Mopar Clubhouse Discussion
Guidelines: http://www.1962to1965mopar.ornocar.org/mletiq.html
and http://www.1962to1965mopar.ornocar.com/general_disclaimer.html. --
You received this message because you are subscribed to the Google Groups
"The 1962 to 1965 Mopar Mail List Clubhouse" group. http://groups.google.com/group/1962to1965mopars?hl=en. --
--
Please address private mail -- mail of interest to only one person
-- directly to that person. That is, send parts/car transactions and
negotiations as well as other personal messages only to the intended
recipient, not to the Clubhouse public address. This practice will protect
your privacy, reduce the total volume of mail and fine tune the content signal
to Mopar topic. Thanks!
1962 to 1965 Mopar Clubhouse Discussion
Guidelines:
http://www.1962to1965mopar.ornocar.org/mletiq.html
and http://www.1962to1965mopar.ornocar.com/general_disclaimer.html.
--
You received this message because you are subscribed to the Google Groups
"The 1962 to 1965 Mopar Mail List Clubhouse" group.
http://groups.google.com/group/1962to1965mopars?hl=en.
--
-- Please address private mail -- mail of interest to only one person --
directly to that person. That is, send parts/car transactions and negotiations
as well as other personal messages only to the intended recipient, not to the
Clubhouse public address. This practice will protect your privacy, reduce the
total volume of mail and fine tune the content signal to Mopar topic.
Thanks! 1962 to 1965 Mopar Clubhouse Discussion Guidelines: http://www.1962to1965mopar.ornocar.org/mletiq.html
and http://www.1962to1965mopar.ornocar.com/general_disclaimer.html. --
You received this message because you are subscribed to the Google Groups
"The 1962 to 1965 Mopar Mail List Clubhouse" group. http://groups.google.com/group/1962to1965mopars?hl=en.
--
--
Please address private mail -- mail of interest to only one person -- directly to that person. That is, send parts/car transactions and negotiations as well as other personal messages only to the intended recipient, not to the Clubhouse public address. This practice will protect your privacy, reduce the total volume of mail and fine tune the content signal to Mopar topic. Thanks!
1962 to 1965 Mopar Clubhouse Discussion Guidelines:
http://www.1962to1965mopar.ornocar.org/mletiq.html and http://www.1962to1965mopar.ornocar.com/general_disclaimer.html.
--
You received this message because you are subscribed to the Google Groups "The 1962 to 1965 Mopar Mail List Clubhouse" group.
http://groups.google.com/group/1962to1965mopars?hl=en.
|
Back to the Home of the Forward Look Network