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3/29/14 10:48pm - Reply: 'Re: L36 Engine cam replacement'
JohnRR
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Joined: 2/22/2011
Posts: 110
Dr. Rebuild has some nice vacuum line kits and an excellent printed instruction/trouble shooting guide.

John



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1973 BB 4-Speed Coupe Project Car
2009 Z06 Mostly Stock
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3/30/14 9:40pm - Reply: 'Re: L36 Engine cam replacement'
rep69
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Chesapeake, VA - USA

Vette(s):
1969 convertible 427 4speed

Joined: 7/24/2012
Posts: 130
Thank you for the info. I will look them up on the computer. 
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4/17/14 7:59pm - Reply: 'Re: L36 Engine cam replacement'
rep69
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Chesapeake, VA - USA

Vette(s):
1969 convertible 427 4speed

Joined: 7/24/2012
Posts: 130

Today I finally was able to drive the car for the first time since the engine overhaul.  It has been a long process, but it was worth it. Engine sounds great. I am going to drive it around locally to put some miles on the engine. Then I can change the oil and hopefully be good to go.  I am still having the issue with the wiper door opening up after you shut down the engine. I am going to have another corvette mechanic take a look and hopefully it is something simple. 

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4/18/14 12:24pm - Reply: 'Re: L36 Engine cam replacement'
F4Gary Gold Member
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Grapevine, TX - USA

Vette(s):
1972 LT-1 convertible with factory air.

Joined: 8/26/2006
Posts: 870
rep69 said: My L36  engine is finally ready to go back in the car.  New Comp cam and rocker arms and timing chain. new pistons.  The machine shop went through the entire engine and they did a great job. The aluminum manifold needed some work. The mechainic explained how important it is to keep a check on the antifreeze condition. My manifold had some pitting and small cracks.  He told me to check the PH level of the antifreeze. I will get a PH test kit and monitor my system. 


Only use distilled water when mixing your coolant.


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4/20/14 3:54pm - Reply: 'Re: L36 Engine cam replacement'
rep69
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Chesapeake, VA - USA

Vette(s):
1969 convertible 427 4speed

Joined: 7/24/2012
Posts: 130
Thanks for the info.   I took the car out for its first long drive today. Highway and local driving. She is running good except for when I turn the air conditioning on the car will not idle when you come to a stop light. The engine will flood out and die. I have to push the gas pedal to the floor and hold it and then crank the engine to get it to start.  Any suggestions?  simple adjustment of the floats?  a/c compressor belt too tight?  I have a Holley 4150 double pumper carb.  The carb was rebuilt last year. It was working good before the engine overhaul.
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4/20/14 11:17pm - Reply: 'Re: L36 Engine cam replacement'
JohnRR
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Posts: 110
The float adjustment on a Holley is about as simple as it gets.  Have the engine fully warmed up and sitting on a level surface.  Remove the air cleaner assembly.  Place a cotton rag along the passenger side of the carb to catch the drips that are going to come out of the sight plug.  Have a wide-blade screwdriver and a 5/8 box wrench available.  Start it up and let it idle.  Remove the fat screw plug on the primary side of the carb.  If gas begins running out, then the float is too high.  Place the 5/8 wrench on the float adjustment nut, and then loosen the slotted lock screw on top.  Turn the hex nut clockwise to lower the float until gas just barely drips out the side hole.  Hold the wrench still and lock the adjustment with the slotted screw on top.  Replace the side plug.  Repeat on the secondary side and you're done.

Do you have the distributor vacuum advance on full manifold vacuum?

Lastly, you can get a throttle stop solenoid that is activated when the A/C comes on and it will increase the throttle position a little.

John




____________________________________
1973 BB 4-Speed Coupe Project Car
2009 Z06 Mostly Stock
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4/21/14 9:41am - Reply: 'Re: L36 Engine cam replacement'
rep69
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Chesapeake, VA - USA

Vette(s):
1969 convertible 427 4speed

Joined: 7/24/2012
Posts: 130
Thanks for theh info.  I am always trying to learn something about fixing my own equipment, but I am going to take the car back to the mechanic who installed the engine  and have him do the adjustments to the carb. 
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4/24/14 8:06pm - Reply: 'Re: L36 Engine cam replacement'
rep69
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Chesapeake, VA - USA

Vette(s):
1969 convertible 427 4speed

Joined: 7/24/2012
Posts: 130
I was told by my mechanic that I need to let the engine break in some more before he adjusts the carb. The engine idles good and runs good with the air conditioning off.  I am not a mechanic but it seems that the carb can be adjusted anytime??
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4/25/14 11:50am - Reply: 'Re: L36 Engine cam replacement'
nosal1 Gold Member
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Dunedin, FL - USA

Vette(s):
1980 Corvette Torch Red with Gold metallic 370HP/350 CU.IN.Turbo 350 w/shift kit.Originally CA.Car with 305 CU.IN.

Joined: 3/21/2006
Posts: 238

Good Afternoon,  The mech is partially right about setting the carb.

It is always best to make the adjustments when engine has "loosened up a bit",however the difference is minimal.He can or you can adjust now and the recheck when you change oil/filter.   Now as far as the idle reduction when you turn on the AC.  You will have to purchase a idle control solenoid that normally mounts on front of carb and is electrical charged when AC is turned on and runs.  I know you can get one though Edelbrock for Edelbrock carbs along with one for a Q-Jet carbs,however never looked for one for a Holley carb (not a fan of Holley's,great carb for racing not daily driver etc.) and not sure there is one for that carb. It is a solenoid, that when you wire it into power source (green wire) for compressor,it will send a throttle pin to boost throttle linkage thereby increasing idle to compensate for the AC drag on engine.  I hope this may help.Take care and have a great day..
Sal C             no1sal


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4/26/14 9:17pm - Reply: 'Re: L36 Engine cam replacement'
rep69
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Chesapeake, VA - USA

Vette(s):
1969 convertible 427 4speed

Joined: 7/24/2012
Posts: 130
Ok I will drive the car and put some more miles on the engine. Before I had the engine overhauled, it would idle good with the a/c on of off. When I bought the car, it had the holley carb. I am happy with the holley, hopefully it just needs some fine tuning. I understand that my engine probably came from the factory with a rochester q-jet.  The L-36  390 hp 427 on an early 1969 car. 
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6/3/14 3:44pm - Reply: 'Re: L36 Engine cam replacement'
rep69
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Chesapeake, VA - USA

Vette(s):
1969 convertible 427 4speed

Joined: 7/24/2012
Posts: 130

I was going to hold off on getting a paint job, but last month the paint shop was slow with work so I bit the bullet and had the car repainted.  The car has been in the paint shop for a month!!  This is my first time dealing with a repaint of a corvette. I guess this is typical? The car is almost finished. I will try to post some pictures of the new monza red paint  

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6/20/14 10:21pm - Reply: 'Re: L36 Engine cam replacement'
rep69
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Chesapeake, VA - USA

Vette(s):
1969 convertible 427 4speed

Joined: 7/24/2012
Posts: 130
Car has been painted so now on to getting the Holley carb tuned. Drove car today and it still idles rough and is rough running at slow speeds. I am trying to understand the proper operation of the holley 4165 double pumper . the list number is L6213.  I believe it is a 800cfm spread bore   Usually when I start the engine cold, I pump the gas pedal twice and the engine starts up and idles around 1200/1500 rpm. This is the high idle postion. I can tap the gas pedal and the car idles down to around 800/900 rpm.  Now I have to pump the gas pedal several times to start a cold engine and it does not go to a high idle rpm.  Any thoughts?   Thanks, Bob
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9/28/14 4:17pm - Reply: 'Re: L36 Engine cam replacement'
rep69
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Chesapeake, VA - USA

Vette(s):
1969 convertible 427 4speed

Joined: 7/24/2012
Posts: 130
Anyone used a Quick Fuel carb ?  I am have finally decided to take the Holley double pumper off the engine. Replacing it with a more " street driving"  Quick Fuel black diamond series. 
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9/28/14 4:41pm - Reply: 'Re: L36 Engine cam replacement'
nosal1 Gold Member
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Dunedin, FL - USA

Vette(s):
1980 Corvette Torch Red with Gold metallic 370HP/350 CU.IN.Turbo 350 w/shift kit.Originally CA.Car with 305 CU.IN.

Joined: 3/21/2006
Posts: 238

Hello and Good afternoon from Dunedin,FL.

            I have no idea what a "Quick Fuel Carb" is!! Do you have any info on this make of carb,Black Diamond or whatever...If you can send a picture would help as well..I know of Demon's,Holley's,Barry Grants,Edelbrock's and Q-Jets,and a couple of others..
           My carb of choice is Edelbrock,Q-Jets,Barry Grants and Demons in that order of performance.Q-Jet is the all around best due to the smaller primaries and BIG secondaries an better economy..Edelbrocks because they perform better,albeit not as economic as a Q-Jet..  Again if you have info and send a picture would be great..
   Have a great day...
    Sal C        


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9/28/14 5:03pm - Reply: 'Re: L36 Engine cam replacement'
rep69
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Chesapeake, VA - USA

Vette(s):
1969 convertible 427 4speed

Joined: 7/24/2012
Posts: 130
Quick Fuel Technology  They are on the web and sold through Summit and Jegs.  I will share more information once I get the new carb installed, hopefully this week?
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9/29/14 1:08pm - Reply: 'Re: L36 Engine cam replacement'
F4Gary Gold Member
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Grapevine, TX - USA

Vette(s):
1972 LT-1 convertible with factory air.

Joined: 8/26/2006
Posts: 870
rep69 said: Quick Fuel Technology  They are on the web and sold through Summit and Jegs.  I will share more information once I get the new carb installed, hopefully this week?


I too have though about replacing my old original Holley with a Quick Fuel.


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9/29/14 2:04pm - Reply: 'Re: L36 Engine cam replacement'
nosal1 Gold Member
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Dunedin, FL - USA

Vette(s):
1980 Corvette Torch Red with Gold metallic 370HP/350 CU.IN.Turbo 350 w/shift kit.Originally CA.Car with 305 CU.IN.

Joined: 3/21/2006
Posts: 238

Rep69. I just finished watching a 13 minute video on you tube regarding the Quick Fuel carb.I was impressed with the carb being constructed with aluminum,however it is no different than the Holley with the exception it is much prettier and use the same internal gaskets power valves etc....It is a Circle track and drag strip carb as is the Holley carb,and as I have always said,if I am on a drag strip or racing I would definitely have a Holley as a normal aspirated engine carb,however if I was to drive the same car home I would change to a Q-Jet or Edelbrock that I rebuilt...Sorry to say the original statement by Edelbrock of "take it out of the box and it is ready to run" has lost a lot in the translation,as I have had to take apart several Edelbrocks straight from the factory to at least check the floats..Given this I still maintain that the Edelbrock is suoerior to the Holley and this new Quick Fuel is a Siamese twin to the Holley.Good luck in your quest for a good to great carb.Below is the you tube video I watched extolling the quality of the carb..  Sal C

Quick Fuel Technology BDQ-950 Carb: A Close-Up Look





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9/29/14 8:28pm - Reply: 'Re: L36 Engine cam replacement'
rep69
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Chesapeake, VA - USA

Vette(s):
1969 convertible 427 4speed

Joined: 7/24/2012
Posts: 130
I will check out the video. Thanks.
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9/30/14 4:31pm - Reply: 'Re: L36 Engine cam replacement'
F4Gary Gold Member
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Grapevine, TX - USA

Vette(s):
1972 LT-1 convertible with factory air.

Joined: 8/26/2006
Posts: 870
The carb in that video is for racing.  Quick Fuel make carbs for street cars with electric chokes and vacuum secondaries.  I look at them as a modernized, i.e., better Holley.

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9/30/14 8:45pm - Reply: 'Re: L36 Engine cam replacement'
rep69
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Chesapeake, VA - USA

Vette(s):
1969 convertible 427 4speed

Joined: 7/24/2012
Posts: 130
The new carb that was bought from quick fuel  is one with an electric choke and vacuum secondaries. Black Diamond series. I am excited to see how it performs on my car.
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