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  #1  
Old 10-17-2011, 10:25 AM
Blake Blake is offline
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Who has actually ran a Holley TA 470 on an AMC V8?

I'm about to pull the trigger on a brand new Holley TA for the waggy and was wondering if anyone has actually ran the 470 at altitude? If so, any regrets? How does it run? What jets are you running?

I already have a Holley TA 670 on the J10 and feel that it's a little big.
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  #2  
Old 10-17-2011, 11:15 AM
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Unless your 360 is built go with the smaller TA carburetor.
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  #3  
Old 10-17-2011, 06:30 PM
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Gambler68 Gambler68 is offline
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Awaiting results, I'm thinking that's the right size for playing at HA.
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  #4  
Old 10-17-2011, 06:53 PM
Blake Blake is offline
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Well the CFM chart says a 470 will be ok.

I dunno.

I'm probably gonna get one in less than a week. Thinking about putting it on the J10 which already has a good running 670 and comparing the results.

Something tells me the smaller 470 will be perfect. I don't hot rod the jeeps, I just want them to run well on the low end.
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  #5  
Old 10-17-2011, 07:56 PM
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jeepjseries jeepjseries is offline
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I brought this up A while ago and was told the 470 would be fine for a stock 360. Unless your bored out .30 over or other performance mods I would use it.
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  #6  
Old 10-18-2011, 08:08 AM
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Quote:
Originally Posted by jeepjseries
I brought this up A while ago and was told the 470 would be fine for a stock 360. Unless your bored out .30 over or other performance mods I would use it.

The overbore won't make that much of a difference.

The camshaft, intake and exhaust would. With an Edelbrock performer and a stock style cam, a 470 will be enough. You may lose a little on the top end but most people never drive at that high of an RPM so it's never really an issue.

If you start opening things up with an aggressive high RPM cam, a free flowing intake and bigger exhaust, the 470 will be a limiting factor. But these kinds of aggressive mods are really only for when you're planning on racing the 360 in something.

I'd love to see a 570cfm TA. It would be great for keeping the low end throttle response but allow for a little better breathing when the truck is really loaded down running at higher RPMs (like when you're towing a load up a long grade). But Holley doesn't make one.
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  #7  
Old 10-18-2011, 05:31 PM
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Stuka Stuka is offline
 
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Your are over carbed with a 670cfm carb. The engine would need to be running far more RPM than most of us would ever even consider running them. And even if you had a lot of mods to get the VE to be higher, you still arent going to need it.

I actually felt I was a bit over carbed with an edelbrock 600. I needed to be at around 5500rpm to go WOT and have it run properly.

470 would be a little on the small side for WOT 5500rpm use. But its bigger than the stock 2v that they came with, and those smaller primaries will be great for low rpm throttle response.
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  #8  
Old 10-19-2011, 12:55 AM
Blake Blake is offline
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5500 rpm's? I think either of my AMC v8's would blow up before revving that high!

I'm almost ready to pull the trigger on the 470.

http://www.summitracing.com/parts/HLY-0-90470/
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  #9  
Old 10-19-2011, 06:45 AM
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what do you guys think about this statement from Holley:
"This carburetor is not designed or intended for use on any V8 application. This carburetor is designed for extreme off-road, off-angle use. Due to its design, it is not recommended for street driving or towing applications because rich conditions and poor fuel economy will be experienced."

Not designed for use on a V8? Not recommended for street driving?
Will it still pass emissions testing?

I've thinking more and more about these Holleys but still not sure. I do need to be able to drive to the trails, I don't care about 5000+ RPM's but I really care about the Jeep not stalling on steep climbs and side hills.
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  #10  
Old 10-19-2011, 08:21 AM
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Quote:
Originally Posted by blake5179
what do you guys think about this statement from Holley:
"This carburetor is not designed or intended for use on any V8 application. This carburetor is designed for extreme off-road, off-angle use. Due to its design, it is not recommended for street driving or towing applications because rich conditions and poor fuel economy will be experienced."

Not designed for use on a V8? Not recommended for street driving?
Will it still pass emissions testing?

I've thinking more and more about these Holleys but still not sure. I do need to be able to drive to the trails, I don't care about 5000+ RPM's but I really care about the Jeep not stalling on steep climbs and side hills.

They want to sell you the bigger carburetor, which costs a few dollars more, and then sell you all the parts you need to tune it to where it runs right.
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  #11  
Old 10-19-2011, 10:40 AM
Blake Blake is offline
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Quote:
Originally Posted by derf
They want to sell you the bigger carburetor, which costs a few dollars more, and then sell you all the parts you need to tune it to where it runs right.

That's not really true.

The 470 and 670 costs the same.

I'm not sure they are trying to 'get us' on the parts either. They just made a very tunable carb for us to play with

I already know the offroad benefits to using these carbs as I already have one on the J10. I've read on here that the MC2150 is a good offroad carb. Well, maybe it is compared to other types of carbs, but it doesn't even compare to the TA. I was recenlty 'wheeling the waggy on some medium difficulty stuff and the MC2150 stalled out several times. Especially bouncing around and sudden starts or stops. Now there are those who could argue that I have the carb grossly miss-tuned, causing the stalling. Well if that is true, how was I able to pass emissions with it? On 35's?

I've already added it to the summit shopping cart and just waiting on payday to click 'purchase'.

I'll report on it's performance in my Goofy build thread.
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  #12  
Old 10-19-2011, 11:23 AM
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Gambler68 Gambler68 is offline
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With a 1406, Th400, QT, 360 with a Holley Street Dominator intake, and 33's, I can only hit 4k at 90-100mph. Or in 4-LO spinning the tires..either way, 5500 is lightyears beyond anything my jeep would approach.

Thank you Blake for spending the coin to get some real world results
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  #13  
Old 10-19-2011, 08:35 PM
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billyj7175 billyj7175 is offline
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Quote:
Originally Posted by Blake
5500 rpm's? I think either of my AMC v8's would blow up before revving that high!

I'm almost ready to pull the trigger on the 470.

http://www.summitracing.com/parts/HLY-0-90470/

Doesn't apply to your crowd with the NV4500, but the stock 727 auto is governed at 4500 rpm anyways...

I had a thread similar to this a while back...and between the time of me finding it, researching and getting back with the guy, he realized what he had...oh well. However, I do plan on running a 470 anyways...just waiting on a good deal somewhere...
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  #14  
Old 10-20-2011, 08:40 AM
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derf derf is offline
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Quote:
Originally Posted by Blake
Now there are those who could argue that I have the carb grossly miss-tuned, causing the stalling. Well if that is true, how was I able to pass emissions with it? On 35's?

It could be your float level in the 2150 is a tad too low. That would contribute to stalling off road while letting you pass emissions just fine.

But that doesn't necessarily mean anything. There is no empirical evidence to prove one way or another which carburetors are better than which. Just anecdotal evidence and that's not reliable.
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  #15  
Old 10-20-2011, 12:03 PM
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Lindel Lindel is offline
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Quote:
Originally Posted by blake5179
what do you guys think about this statement from Holley:
"This carburetor is not designed or intended for use on any V8 application. This carburetor is designed for extreme off-road, off-angle use. Due to its design, it is not recommended for street driving or towing applications because rich conditions and poor fuel economy will be experienced."

Not designed for use on a V8? Not recommended for street driving?
Will it still pass emissions testing?

I've thinking more and more about these Holleys but still not sure. I do need to be able to drive to the trails, I don't care about 5000+ RPM's but I really care about the Jeep not stalling on steep climbs and side hills.


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  #16  
Old 10-20-2011, 06:31 PM
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Stuka Stuka is offline
 
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Quote:
Originally Posted by Gambler68
With a 1406, Th400, QT, 360 with a Holley Street Dominator intake, and 33's, I can only hit 4k at 90-100mph. Or in 4-LO spinning the tires..either way, 5500 is lightyears beyond anything my jeep would approach.

Thank you Blake for spending the coin to get some real world results

I had a T18a, so I could hit any RPM I wanted until the valves floated up until 3rd. With autos, they will make you shift before then unless you have a manual valve body.

As for them saying the 470 isn't for a V8, you will need to jet it most likely. But its still bigger than the stock 2150 carb.

The 470 would actually work pretty well on a well modded 258.
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  #17  
Old 10-21-2011, 11:30 AM
Blake Blake is offline
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Well I was planning to get the TA 470 today, but something else came up, so I am holding off.

I am still looking to buy one, but not today.

Would love to hear from someone who actually has a 470 on a V8 though. Especially at high altitude...
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  #18  
Old 10-21-2011, 02:12 PM
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Quote:
Originally Posted by Stuka
I had a T18a, so I could hit any RPM I wanted until the valves floated up until 3rd. With autos, they will make you shift before then unless you have a manual valve body.

As for them saying the 470 isn't for a V8, you will need to jet it most likely. But its still bigger than the stock 2150 carb.

The 470 would actually work pretty well on a well modded 258.

Didn't think about the stick.

I've actually been considering a 470 for my 327 Vigilante..expensive experiment though. Likely I'll settle on a smaller carb that good for around my altitude locally at 6500 and do a TA on my trail rig.
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  #19  
Old 10-21-2011, 05:54 PM
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I have a 470 TA on my Jeep. 76 Cherk with an 87 Motor. TH400/D20 Stock except for carburetor/Holley street dominator.

Low end grunt is great; I really don't get into it much but the power is smooth and consistent up to about 3500 rpm. The secondaries kick in smoothly, almost too smoothly. I DD this and haven't been off-road with it. I live in NJ, so no experience with altitude. Out of the box this carb was fantastic compared to the Holley 600 it replaced.

Hope this helps,

John
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  #20  
Old 10-21-2011, 06:01 PM
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With the small intake runners on the Street Dominator, that should be a great combo.
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