Know any national chain type engine rebuilders that are worth anything,
Frank? ATK?Power Pro? Others?
Thanks!
Bob King
Pennsville, NJ
-----Original Message-----
From: Holloway,Frank T <Frank.T.Holloway@KP.ORG>
To: 'dakota-truck@buffnet.net' <dakota-truck@buffnet.net>
Date: Saturday, October 30, 1999 7:20 PM
Subject: DML: RE: Magnum 360 Short Block ?
>GS,
>
>I don't know much about the short blocks that Mopar Performance sells and I
>don't think they know much about them either. The Magnums don't have the
>same balance factor as the early A-engines. The rods are the same but the
>cranks are different (balance factor). The Magnum pistons are a heck of a
>lot lighter than the A-engine equivalents. Vibration dampers and flex-plate
>or flywheels are different. One would need to find out what crank they are
>using. Timing chain cover and cam would need to be changed (Magnums don't
>need the accessory drive for the fuel pump). The cam would be way to much
>for computer controlled vehicles (lift is OK, but the duration is way too
>much). LSA on the cam is way too small (108 degrees) and needs to be at
>least 112 degrees. On short block P/N P4876906, they call the compression
>height of 1.580, even if you deck the block .020 inch, that figure would
put
>the pistons .080 down in the bores (not good). I have no idea how they
could
>possibly get the CR's they are claiming. Even P/N P9876913 would still have
>the pistons down in the bores. I really think these engines are
replacements
>for early A-engines and MP they said that they were in the process of
>changing the piston combinations. The heads are the same for the 318 and
360
>(no difference). IMHO, I think they are a good deal for early engines, but
I
>would wait until MP gets their act together before purchasing one as a
>replacement short block for Magnum vehicles. Magnum cores can be had at
>reasonable prices (I just got 10 core engines for the Landy's). You can get
>a replacement short block assembly with your choice of pistons, rings, cam,
>and bearings from top notch rebuilders for about the same price.
>
> Frank
>
>> -----Original Message-----
>> From: GS- [SMTP:GSWillhite@ualr.edu]
>> Sent: Thursday, October 28, 1999 9:15 AM
>> To: dakota-truck@buffnet.net
>> Subject: DML: Magnum 360 Short Block ?
>>
>> Several months ago we talked about the 360/300 & 360/380
>> Magnum crate motor and how difficult it is to adapt to
>> our Daks. I was wondering if the 360 short blocks would
>> be easier? Say take the one with the lower CR like 9.5:1
>> and stick my 318 heads on it (I think swede said 318/360
>> heads are the same). I know the cam has much higher lift.
>>
>> I guess the real problem would be would it work with the
>> stock or MP computer. Probably would not be talkin' any
>> type of gas mileage here, but thats not what I'm after.
>>
>> Oh yeah, I think the 360 has a different flywheel and is
>> externally balanced. Maybe do a slight mod to the stock
>> manifold (I know Frank) to help take advantage of the
>> higher breathing cam and install a crank position sensor,
>> I don't think the Mag short block has one?. For the price,
>> $1200-1500 for the short block, you can't beat it.
>>
>> GS -
>>
>> 98 5.2L 5spd
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