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Net horsepower rating of 1966 D200 318 "poly" and

Posted: Sun Oct 03, 2004 2:17 am
by Guest
What was the Net HP ratings on the 1966 D200 318 "Poly" and the 361 V-8's? Note: I'm referring to the Net HP ratings(Not the Gross HP ratings)!

Posted: Sun Oct 03, 2004 2:00 pm
by wideblock
on my 66 poly, the only hp ratings i saw was the 200hp sticker on the valve cover, and the 198hp listed on the door tag.

Posted: Sun Oct 03, 2004 6:04 pm
by 1966D100
same here, though i read in an old article that some made about 230hp

Posted: Sun Oct 03, 2004 8:06 pm
by wideblock
that would be what i think they called the "spitfire" or something like that. it was a twin 4bbl poly in one of the car lines.

Posted: Sun Oct 03, 2004 11:25 pm
by nfury8
Chrysler was notorious for understating the HP ratings on their vehicles back in the day.

Posted: Mon Oct 04, 2004 8:52 am
by Jeffc
The truck polys all had a HP factory rate of 200hp unless they were
the hydro lifter class 2 or 3 truck engine (that rate is 210),
car rates were as follows-
230hp 2bbl, 260hp 4bl and 290hp 2x4, there are also diffreances in the cam
from the factory all the engines with the trucks being long derration
low lift ( from around .19 to .21 lift in trucks, in car engines a high of around
.38 lift in 290 2x4 1957/58 engine from the factory)
There is also a compression
differance between the car and truck engines, trucks were a little
under 8 to 1, cars ran from just under 9 to 1 too just over 9.2 to 1.
In cars the 4bbl was gone by 1963 and the 2x4 was gone 1959 (books
list 58 as last year for the 2x4, but I have a friend that has 59 Fury with the 2x4 from the ordered and install at the factory though the dealer).

Spitfire was the name used in the 50s for poly engines, mostly by Dodge
and Chysler to denote the standard v8's other than Hemis.

I don't have the truck rates for the 361, but the most common car rates are
265hp 2bbl, 305hp 4bbl and 310hp 2x4

Posted: Tue Nov 02, 2004 8:10 am
by 1966D100
i found some more info.

A guy posted this, his is a 318 polysphere out of his 64 ut. Completly stock.

He found that his was making 202 bhp at 3,900 RPM at mph equivilent of 82 mph and it was making 286 ftlbs of torque at 2,400 RPM

Not saying that everyone will have the same results, but thats atleast a good baseline for the trucks :study