Re: Fastest stock smogger 360 combos
[Re: Irun5snd8th]
#113767
09/02/08 09:29 PM
09/02/08 09:29 PM
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Joined: Oct 2007
Posts: 846 Illinois
moparmattkos
mopar addict
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mopar addict
Joined: Oct 2007
Posts: 846
Illinois
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Quote:
Quote:
You may wanna ask quickmopardan on this one
Dan's is a long way from stock.
Not if you ask him it isnt
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Re: Fastest stock smogger 360 combos
[Re: Dago Red]
#113775
09/03/08 01:48 PM
09/03/08 01:48 PM
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Joined: Jul 2006
Posts: 4,595 On the south side of Nowhere
S/ST 3040
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Joined: Jul 2006
Posts: 4,595
On the south side of Nowhere
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Quote:
Quote:
i got a stock 360 in a 3300 duster with 904 [Email]12.39@105[/Email] 430 gears
Ain't happening. $100 bucks to the Ronnie Sox Foundation says so.
I think he means stock "smog" bottom end, not 100% stock.
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Re: Fastest stock smogger 360 combos
[Re: Duster3105]
#113776
09/03/08 02:40 PM
09/03/08 02:40 PM
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Joined: Sep 2004
Posts: 2,094 oberlin, Ohio
Rapid340
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Quote:
I was actually wondering if it was mine or member 360/904's. Our's are a bit quicker than high 12.'s though.
Dont know if it was you, it was 10-12 years ago. Back before strokers and aftermarket heads where growing on trees.
It occoured to me that the first MP 300HP crate motor was a stock smog motor with a 280 474 cam and a dual plane intake. They had the swirl heads and I think those could touch 12's in a 3000 lb car.
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Re: Fastest stock smogger 360 combos
[Re: Dago Red]
#113779
09/03/08 05:25 PM
09/03/08 05:25 PM
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Anonymous
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Anonymous
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To me, Smogger means stock pistons, stock crank and stock rods. Heads may be milled some as a cheap way to gain SOME compression back but over 9:1 and it ain't a smogger!
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Re: Fastest stock smogger 360 combos
[Re: Locomotion]
#113780
09/03/08 05:27 PM
09/03/08 05:27 PM
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Joined: Sep 2004
Posts: 2,094 oberlin, Ohio
Rapid340
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oberlin, Ohio
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Quote:
The 300hp version can't be considered a "smogger" for the same reasons. The only difference between the two was the intake manifold, .010" of cam lift and intake valve size.
Myron,
I would be surprised if the old 300 crate motor was anything other than a stock low compression 360 long block with better valve springs and cam. I looked at some old MP catalogs and they specify the crate 360 as having 9:1 compression, the crate 300 they are strangely silent on compression. I bet all the 300 crates had production 8:1 cast pistons.
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Re: Fastest stock smogger 360 combos
[Re: 68DART360]
#113782
09/03/08 05:37 PM
09/03/08 05:37 PM
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Joined: Feb 2003
Posts: 484 The State of Hockey
2qik4u
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The State of Hockey
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Quote:
I went 13.4@ 102 with a stock 79 360 with MP 474 cam performer intake 625 AFB headers and 3.23 gears in a 3250# dart
I needed 4.10 gears to get there with the heavy RR.
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Re: Fastest stock smogger 360 combos
[Re: Rapid340]
#113783
09/03/08 06:07 PM
09/03/08 06:07 PM
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Joined: Jan 2003
Posts: 5,903 Florida
Locomotion
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Jeff, From some stories I heard, some of the original pre-production crate engines may have been built with OEM pistons, flattops or dished. But once production began both versions had higher compression flattops with notches. I see what you're saying in the '93 and '94 catalogs. But the .474" cam would seem a little stout for an 8.0-1 compression. I have some more articles around but don't have time to do more digging. However, the IHRA specs for my 300hp version, which came from Mopar before they accepted the combo, calls for flattops with notches. I just found that the 1998 catalog, page 25, lists KB flattops as "Service Pistons for the MP 360 Commando Crate Motors, 9.0:1." It doesn't differentiate between the 300hp or 360hp versions. Perhaps they were early KB 107's. The notches are not like the 2 "eyebrow" current versions, but they would likely provide about 9.0:1 if the heads and/or block were not milled a lot, just cleaned up. P5249478 - 4.020" P5249470 - 4.030" I've been told that both versions of the original Magnum crates had OEM shortblocks.
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