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best AMC for F.A.S.T./ Pure Stock

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scramboy View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote scramboy Quote  Post ReplyReply Direct Link To This Post Topic: best AMC for F.A.S.T./ Pure Stock
    Posted: Oct/20/2018 at 7:47am
Was having a recent discussion on the forum with a member building a car for pure stock drag racing. Got me thinking which AMC body/engine would be the most competitive in said classes? Lets be real here, extra cubic inches etc is rampant in those classes so lets apply this here. Im talking lets make it look bone stock and get it as fast as we can. I know there are car/engine builders out the that have thought about this, lets hear your ideas!
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Post Options Post Options   Thanks (0) Thanks(0)   Quote jpnjim Quote  Post ReplyReply Direct Link To This Post Posted: Oct/20/2018 at 8:29am
If you need to have the free flow exhaust manifolds (and I think you do),
then you're talking 1971-74 Javelin, or 1971 SC/360 Hornet clone.

Assuming the need for a 2 bbl carburetor would kill the V8 Gremlin and any other V8 Hornet.

Those Javelins also got E60 tires so the extra weight compared to a Hornet at least gets you something.

If transmissions have to match too I'd say a 1972 401/727 (or built 904 if you could run it) Javelin would be the best chance.
But even then I don't think it can compete in pure stock,
even assuming a stroker crank and if a "special" block was allowed.

Just my 2 cents
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Sonic Silver Quote  Post ReplyReply Direct Link To This Post Posted: Oct/20/2018 at 8:52am
Originally posted by jpnjim jpnjim wrote:

If you need to have the free flow exhaust manifolds (and I think you do),
then you're talking 1971-74 Javelin, or 1971 SC/360 Hornet clone.

Assuming the need for a 2 bbl carburetor would kill the V8 Gremlin and any other V8 Hornet.

Those Javelins also got E60 tires so the extra weight compared to a Hornet at least gets you something.

If transmissions have to match too I'd say a 1972 401/727 (or built 904 if you could run it) Javelin would be the best chance.
But even then I don't think it can compete in pure stock,
even assuming a stroker crank and if a "special" block was allowed.

Just my 2 cents
The SC/360 only came with 1 freeflow exhaust manifold.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote jpnjim Quote  Post ReplyReply Direct Link To This Post Posted: Oct/20/2018 at 9:44am
Originally posted by Sonic Silver Sonic Silver wrote:

The SC/360 only came with 1 freeflow exhaust manifold.

Great point Sonic,
(and one I completely forgot about!)
thanks!
71 P-code 4spd Javelin/AMX
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Post Options Post Options   Thanks (1) Thanks(1)   Quote Sonic Silver Quote  Post ReplyReply Direct Link To This Post Posted: Oct/20/2018 at 9:50am
Originally posted by jpnjim jpnjim wrote:

Originally posted by Sonic Silver Sonic Silver wrote:

The SC/360 only came with 1 freeflow exhaust manifold.

Great point Sonic,
(and one I completely forgot about!)
thanks!
That must be why my SC/360 wants to go sideways when I jump on it. There is more power coming out of the driver's side exhaust.
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Post Options Post Options   Thanks (1) Thanks(1)   Quote 304-dude Quote  Post ReplyReply Direct Link To This Post Posted: Oct/20/2018 at 9:57am
Originally posted by Sonic Silver Sonic Silver wrote:


Originally posted by jpnjim jpnjim wrote:



Originally posted by Sonic Silver Sonic Silver wrote:

The SC/360 only came with 1 freeflow exhaust manifold.


Great point Sonic,
(and one I completely forgot about!)
thanks!

That must be why my SC/360 wants to go sideways when I jump on it. There is more power coming out of the driver's side exhaust.


HA!

Don't forget them hollow exhaust manifold bolts too. Them are stock as a dealer fix. But not for going sideways.
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Post Options Post Options   Thanks (3) Thanks(3)   Quote n2ojoe Quote  Post ReplyReply Direct Link To This Post Posted: Oct/20/2018 at 10:28am
Guys, don't get the two classes confused here. The pure stocks and the FAST series are two completely different rule sets. The pure stocks are much more strict and represent what a well sorted, original musclecar can do with stock parts a few minor tweaks. The FAST class looks stock, but allows any internal modifications such as strokers, roller cams, porting, etc. 
psmcdr.com
fastdrags.com

The pure stock musclecar drag race was started by my neighbor and good friend Bob Boden, and had roughly 25 cars at Milan dragway in it's first few years. The event grew and was moved to Mid Michigan Motorplex, where it is a once a year race held in September. It is intended to be a fun event and just get all those cool cars out of storage.
There is test and tune all day Friday, and the timing tower crew keeps track of all the runs during the day. A list is made from the slowest to the quickest, and you get paired up with the car that ran closest to your car's ET. On Saturday the pairings are lined up in the staging lanes from slowest at the front to quickest at the rear. You run 3 rounds of heads up racing with your pairing partner for a 2 out of 3 winner. For a few years they ran a king of the hill bracket race, where if you won your 2 out of 3 shootout then you were eligible to enter. This detetmined an overall winner, but this year they didn't even run the bracket race. You don't have to be the fastest.  They is no winner, no trophy, zip, zero. Only bragging rights, and there is obviously more prestige being paired near the rear of staging. It's all just for fun!

Some of the racers feel the need to push the envelope and had been booted for cheating. These guys came up with their own race and started the Factory Appearing Stock Tire race, where anything goes. I've never even spectated at one of these races, so I can't describe the way they run eliminations. They do have a few other classes at their races though. Factory Stock runs within the Pure Stock rules. Modern Muscle is for late models obviously. Then the F.A.S.T. class are the stars of the show.




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Post Options Post Options   Thanks (0) Thanks(0)   Quote CamJam Quote  Post ReplyReply Direct Link To This Post Posted: Oct/20/2018 at 10:31am
Originally posted by jpnjim jpnjim wrote:

Originally posted by Sonic Silver Sonic Silver wrote:

The SC/360 only came with 1 freeflow exhaust manifold.

Great point Sonic,
(and one I completely forgot about!)
thanks!

Huh?  Someone want to explain this one to me? I'm assuming some sort of a clearance issue?
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Post Options Post Options   Thanks (0) Thanks(0)   Quote n2ojoe Quote  Post ReplyReply Direct Link To This Post Posted: Oct/20/2018 at 10:49am
Originally posted by CamJam CamJam wrote:

Originally posted by jpnjim jpnjim wrote:

Originally posted by Sonic Silver Sonic Silver wrote:

The SC/360 only came with 1 freeflow exhaust manifold.

Great point Sonic,
(and one I completely forgot about!)
thanks!

Huh?  Someone want to explain this one to me? I'm assuming some sort of a clearance issue?

Yes, clearance is the issue to the passenger side strut rod bracket so a standard log manifold was used on that side. 

This brings up another point. I've seen both high flows on an SC360 and Machine manifolds on an AMX at the Pure Stocks. They aren't "quite" as strict as some may think at this race. Obviously the intent and goal is to bring a car with all the correct parts, but the organizers also realize that these cars are 50 years old and have had rough lives and many swapped parts. They are happy to have more AMC's attend, after all it is just for fun. I like the original vision of the class like Mr. Boden had intended, have fun while tuning the most out of the stock parts as you can.
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scramboy View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote scramboy Quote  Post ReplyReply Direct Link To This Post Posted: Oct/20/2018 at 11:05am
My choice would be a 72 Base Javelin with a 401, utilizes free flows, 727 trans, has a huge wheelwell for traction, lighten it up as much as possible and go for it!
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