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engine

Forum: C3 Engines, Driveline and Handling

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engine

Posted: 9/1/06 8:08pmMessage 11 of 17
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cthulhu
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Hot Springs, AR - USA
Joined: 4/24/2004
Posts: 3236
Vette(s): 69 Conv #'s match 427, TKO-600/.64, 3.36HD-Posi, HT, T/T, PS, PB, PW, SP, Leather, Comp XE264HR & Roller Rockers & Lifters, Air-Gap RPM intake, Holley St Av 770 VS, MSD 6AL+Dist+Blaster SS, K&N, Jet-Hot Hooker Side-Pipes, Steeroids, Al Rad, Spal Fans

no

8.5 isnt normal..  (well it was in my car....)

 

but shouldnt be for yours

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engine

Posted: 9/2/06 2:31pmMessage 12 of 17
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gurtz
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baton rouge, LA - USA
Joined: 8/12/2006
Posts: 391
Vette(s): 1981 dark metallic blue, dark doeskin leather interior, mirrored glass T Tops, 330hp/350ci GMPP crate engine, billeted aluminum serpentine system, Dewitts with dual spalls

Right now it is the stock 350 tranny.  I know an additional gear or OD would help, but really not that much.

Annicorvette - what is PF?  I hope you made out OK in Katrina.  I am from south Louisiana and know all too well what took place in Biloxi and New Orleans.

Thanks,  Gurtz

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engine

Posted: 9/2/06 7:17pmMessage 13 of 17
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kstyer
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CUYAHOGA FALLS, OH - USA
Joined: 12/2/2003
Posts: 6424
Vette(s): 1975 C3 Red, T-Tops, Black Interior. All I need is time and money! Getting there!

If you have the ECM disconnected you are running way too rich.  The carb fails to a rich condition when inoperative, or when the mixture control solenoid fails.  That's why the bad fuel mileage.  You also have lost your timing advance.  Poor performance.

You can leave them disconnected but you will need a vacuum advance distributor and a different carburator.  It will run MUCH better, and improve the mileage.

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engine

Posted: 9/3/06 3:09amMessage 14 of 17
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gurtz
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baton rouge, LA - USA
Joined: 8/12/2006
Posts: 391
Vette(s): 1981 dark metallic blue, dark doeskin leather interior, mirrored glass T Tops, 330hp/350ci GMPP crate engine, billeted aluminum serpentine system, Dewitts with dual spalls

I appreciate it Ken.  I was hoping to hear that.

Gurtz

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engine

Posted: 9/3/06 3:11amMessage 15 of 17
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gurtz
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baton rouge, LA - USA
Joined: 8/12/2006
Posts: 391
Vette(s): 1981 dark metallic blue, dark doeskin leather interior, mirrored glass T Tops, 330hp/350ci GMPP crate engine, billeted aluminum serpentine system, Dewitts with dual spalls

Also, whomever has changed these components out, what were your preferences on carburetor and distributor?

Thanks, Gurtz 

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engine

Posted: 9/3/06 8:17pmMessage 16 of 17
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kstyer
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CUYAHOGA FALLS, OH - USA
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Vette(s): 1975 C3 Red, T-Tops, Black Interior. All I need is time and money! Getting there!

Go with the standard HEI distributor with a vacuum advance.  This is a good system and will still run your tach.   Or you could use the MSD version of the HEI like I have in my car.

For the carb I would still perfer the Qudra Jet without the mixture control.  Its a very easy install.   Everything will fit.

kstyer38963.845775463
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engine

Posted: 9/4/06 2:54amMessage 17 of 17
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gurtz
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baton rouge, LA - USA
Joined: 8/12/2006
Posts: 391
Vette(s): 1981 dark metallic blue, dark doeskin leather interior, mirrored glass T Tops, 330hp/350ci GMPP crate engine, billeted aluminum serpentine system, Dewitts with dual spalls

Thanks Ken,

Which unit would you recommend Q Jet wise?  I have been getting most of my parts from Eckler's.  I am looking in their catalog as I write this. 

Do you think they could give me the right retrofit?  I have an MSD in my other play car and love it.  One of the other guys in the tank recommended changing the module and coil, cap/kit etc.  I was checking out Summit and noticed they have those with vacuum advance or would you completely change the distributor?

Thanks for your help again!  Gurtz 

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