EDL-2098 Package High Idle? - Team Camaro Tech
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post #1 of 10 (permalink) Old Apr 26th, 11, 12:04 PM Thread Starter
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Tim
 
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Location: lincoln, ne
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EDL-2098 Package High Idle?

Guys,

I built 350 engine, bored .30 over, and put it in a 67 camaro with a tremec t-56 6 speed combo. Engine has keith black flat tops and Holly carb. It seems to idle kind of high.......around 1100-1300 rpm. Here are the cam and package specs:

The 2098 top end kit includes:
Performer RPM hydraulic cam/
lifters #7102.
two performer RPM heads
# 60899.
timing cover and seal # 6997
cylinder head gasket set # 7361
RPM air gap intake manifold # 7501
intake manifold bolt kit # 8504
cylinder head bolt kit # 8550.

The #7102 performer RPM hydraulic flat tappit cam
is a little radical for a 350 even if it were a 4 speed,
if its an auto car you would have a real mess on your hands without a high stall converter. Here are the specs on the cam.
Int. Dur. .050 = 234
ex. dur. .050= 244
adv. int. dur.= 308
adv. ex. dur.= 318
lift int.= .488
lift ex.= .510
LSA 112

Any ideas on this? tuning? valve adjustment?

'67 SS 6spd
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post #2 of 10 (permalink) Old Apr 26th, 11, 03:10 PM
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Dan Ensign
 
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Re: EDL-2098 Package High Idle?

Ignition timing, mixture adjustment on carb., secondaries not closing all of the way.

Dan E.
69 SS396 4spd. 4.10 posi. x66 coupe
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post #3 of 10 (permalink) Old Apr 26th, 11, 03:28 PM Thread Starter
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Tim
 
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Re: EDL-2098 Package High Idle?

What would be a good idle for this combination?

'67 SS 6spd
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post #4 of 10 (permalink) Old Apr 26th, 11, 06:52 PM Thread Starter
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Tim
 
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Re: EDL-2098 Package High Idle?

timing is 22 degrees.....does that seem about right?

'67 SS 6spd
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post #5 of 10 (permalink) Old Apr 26th, 11, 08:00 PM
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Tom
 
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Quote:
Originally Posted by tvinton View Post
timing is 22 degrees.....does that seem about right?
At 1300 rpm or...?


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'67 rs - ordered new by my Grandfather
327 L30, K-K, Deluxe int, tach & gauges, 12 bolt posi, 4 speed.

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post #6 of 10 (permalink) Old Apr 27th, 11, 08:51 AM Thread Starter
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Tim
 
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Re: EDL-2098 Package High Idle?

Yes, timing is 22 degrees at 1300-1400 RPM

'67 SS 6spd
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post #7 of 10 (permalink) Old Apr 27th, 11, 08:56 PM
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Tom
 
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Trouble is at that high of an idle you are likely into the centrifugal advance already so it's difficult to say what your initial really is.


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'67 rs - ordered new by my Grandfather
327 L30, K-K, Deluxe int, tach & gauges, 12 bolt posi, 4 speed.

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post #8 of 10 (permalink) Old Apr 28th, 11, 12:09 AM
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AJ
 
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Re: EDL-2098 Package High Idle?

As Tom said, with that high of an idle you are already in the centrifugal advance curve and not on the idle curve... Same problem I had with a similar cam in a 327, also, if you're running vacuum advance, the idle vacuum is probably too low for the can, deploying the vacuum advance in and out at idle, this would cause fluctuating timing as well as a dithering rpm.
20+ degrees at no lower than 800rpm should be right.
I'd shoot for 900-1,000 idle at operating temp, don't even try to tune it if it's cold, have to get it to operating temp or your idle speed will jump right back to where it's at now if not.

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'68 333" Camaro
'14 5.0 Mustang
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post #9 of 10 (permalink) Old Apr 28th, 11, 12:12 AM
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darrell
 
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Re: EDL-2098 Package High Idle?

in my opinion -the cam is the problem for your set up--loosing on the low and upper end-but with this duration and to make it idle -my sugestion-1st get total timing at 35-36 deg(set at 3000 rpm)--hook up vacuam gauge to intake prefer-and adjust idle mixture to get highest vacuam--your probably gonna have to drill the throttle plates with 3/16 holes for it to idle right--also my opinion ur probably gonna have to change cams before you will be happy
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post #10 of 10 (permalink) Old Apr 28th, 11, 08:19 AM Thread Starter
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Tim
 
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Re: EDL-2098 Package High Idle?

Thanks guys. There is no vacuum advance on the system. I'm not sure why Edelbrock would sell a kit like this, and include in it a cam that idles at 1400 RPM? Maybe it is ok....perhaps I am just over reacting? I'll try adjusting the Holley 650 on it again I suppose?

'67 SS 6spd
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