Re: 440 cop motor?
[Re: 82ramIndy493]
#1185539
02/25/12 09:09 AM
02/25/12 09:09 AM
|
Joined: Sep 2010
Posts: 13 michigan
y4y421
OP
member
|
OP
member
Joined: Sep 2010
Posts: 13
michigan
|
I pulled it from a 69 roadrunner that had been sitting around in a pole barn for years,an april fools motor great,i know when we started it up all the kids ran for the hills,sure looks like a 6 on the engine pad.so i cleaned the side of the block and its 1976,but does anyone know what it came out of.
Last edited by y4y421; 02/25/12 09:52 AM.
|
|
|
Re: 440 cop motor?
[Re: 82ramIndy493]
#1185542
02/25/12 08:09 PM
02/25/12 08:09 PM
|
Joined: Jan 2003
Posts: 75,043 U.S.S.A.
JohnRR
I Win
|
I Win
Joined: Jan 2003
Posts: 75,043
U.S.S.A.
|
Quote:
Quote:
Either way you look at it the stamp on the side says its a 1978. Its a low compression engine. And as far as i know theres no real difference between a non hp 78 engine and an hp.
I have to disagree. The HP engine should have a different cam, valve springs , windage tray and double roller timing chain setup. I would imagine the distributor is different to for the different cam timing. Even Motorhome 440's have more to them than standard non HP engines in cars.
But still a low compression shortblock ...
|
|
|
Re: 440 cop motor?
[Re: y4y421]
#1185548
02/26/12 11:33 AM
02/26/12 11:33 AM
|
Joined: Jan 2003
Posts: 75,043 U.S.S.A.
JohnRR
I Win
|
I Win
Joined: Jan 2003
Posts: 75,043
U.S.S.A.
|
Quote:
I pulled it from a 69 roadrunner that had been sitting around in a pole barn for years,an april fools motor great,i know when we started it up all the kids ran for the hills,sure looks like a 6 on the engine pad.so i cleaned the side of the block and its 1976,but does anyone know what it came out of.
It would have been installed in a passenger car that was available in 1976 with a 440HP. Without a partial VIN that would point to the plant the car was assembled in that is the only answer anyone can give .
|
|
|
Re: 440 cop motor?
[Re: y4y421]
#1185550
02/27/12 12:36 PM
02/27/12 12:36 PM
|
Joined: Jan 2003
Posts: 16,376
dogdays
I Live Here
|
I Live Here
Joined: Jan 2003
Posts: 16,376
|
If that makes you feel good, then it's OK. The moly rings will have reduced bore wear, but they'll be replaced. Valvesprings and valves will be replaced with high performance ones. The extras mentioned are for durability. The double roller timing set will also be replaced. The connecting rods that I bought from another 76 HP engine are the usual LY rods, the forging number ends in "535". I bet yours are, too. The windage tray is a nice addition. Heads will be 452, 88-92cc open chamber. The rockers are probably the same as late replacements which were pressed out of slightly thicker stock. It seems that they're all like that now. Exhaust manifolds will be better than the low-perf logs.
All in all, it's not a bad engine from which to start. As in all Chrysler bigblocks, a sonic test of the cylinder walls will tell the most. The B/RB engines have very inconsistant casting quality.
In general, by 1976 Chrysler Corp was in bad shape, trying hard not to go under. They had mostly big cars and big engines and the price of gasoline had soared and availability had become an issue. Times were unsettled. Emissions regulations had strangled almost any vestiges of performance.
Interesting, isn't it, that 36 years later cars are 10 times less polluting and horsepower has at least doubled?
In the '70s the auto manufacturers were way behind the curve and either they didn't want to spend the money or they didn't know how or they hoped by building enough doggy cars they could get the people to scream loud enough to roll back emissions regulations.
R.
|
|
|
Re: 440 cop motor?
[Re: dogdays]
#1185551
02/27/12 02:27 PM
02/27/12 02:27 PM
|
Joined: Jan 2003
Posts: 2,874 Upstate, NY
sixpack4spd
master
|
master
Joined: Jan 2003
Posts: 2,874
Upstate, NY
|
Quote:
Interesting, isn't it, that 36 years later cars are 10 times less polluting and horsepower has at least doubled?
EFI, closed loop Computer controlled fuel and timing, etc. Not gonna happen with a carb and distributor.
|
|
|
|
|