C3 Tech/Performance V8 Technical Info, Internal Engine, External Engine, Basic Tech and Maintenance for the C3 Corvette
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'69 427 Bent Push Rod

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Old Mar 29, 2019 | 10:02 PM
  #321  
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Originally Posted by suprspooky
I've read that it's a pain in the neck to remove the shifter but maybe you can pull the trans out with the motor (just removing shift linkage) without to much pain. I pulled my L71 minus the tri-power in about six hours (tranny stayed in) working under a shorty two post lift (sat on a rolling stool mostly) I drove the Car to a buddies house after work on a Friday, we were done before 10PM.
I removed the linkage from the side of the 4 speed.... easy
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Old Mar 29, 2019 | 10:08 PM
  #322  
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Originally Posted by Z06CE
I removed the linkage from the side of the 4 speed.... easy
You'll need to update us on how long it took to pull with tranny (and if it actually came out with shifter still on car), I'm curious because I may do a Tremec off in the future and I'd likely do a frame of resto at that point (so out goes the motor again).
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Old Mar 29, 2019 | 10:16 PM
  #323  
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Originally Posted by suprspooky
You'll need to update us on how long it took to pull with tranny (and if it actually came out with shifter still on car), I'm curious because I may do a Tremec off in the future and I'd likely do a frame of resto at that point (so out goes the motor again).
I can tell you the shifter stays in the car...... M21 Muncie anyway
remove driveshaft, leave the yoke in the tail shaft housing, so gear oil stays in the gear box
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Old Mar 29, 2019 | 10:16 PM
  #324  
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[QUOTE=Z06CE;1599134675]Yes[/run the piston all the way to top of each cylinder one at a time get a good flashlight look over your cylin der walls best you can. Anything below the rings when piston all the way ar bottom nothing to worry about.UOTE]
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Old Apr 1, 2019 | 07:51 PM
  #325  
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Finally got the beast out.
Took it out with the 4 spd. Fairly easy
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Old Apr 2, 2019 | 01:08 AM
  #326  
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I'm looking at hydraulic roller cam kits
I want good vacuum, not a crazy lope but a little noticeable lope. low to midrange torque. street performance.
What do you think about these Howard's Cam kits? What do yu guys think about the choices below.

https://www.ebay.com/itm/HOWARDS-BBC...UAAOSwNyFWdG9q

https://www.ebay.com/itm/HOWARDS-BBC...kAAOSwk1JWdGhI

https://www.ebay.com/itm/HOWARDS-BBC...sAAOSw1S9WdGuT
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Old Apr 2, 2019 | 02:10 AM
  #327  
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My suggestion would be to call one of the cam guys-- Chris Straub, or Mike Jones. Couple others but the names escape me right now. Car Weight, rear gearing, trans and tire size, along with any other engine mods, tell them what you want and let them work the magic.
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Old Apr 2, 2019 | 06:49 AM
  #328  
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Those are rectangle ports. Not ovals. You sure about that 781 head casting number? What intake? And you need to know head-valve-piston-deck height, etc before deciding on a cam. Unless you want a nice middle of the road easy on springs cam. https://paceperformance.com/i-625508...zz502-502.html. disadvantage of buying the ZZ cam is buying all the rest piecemeal. Though some consider it an advantage. You need to pull the timing chain to see if the cam retainer face and bosses for retainer bolts are there. Probably are though. The Howards double springs will require machining valve guides for those seals. Umbrellas won't fit in any double spring. (Little Mouse and boat guys will be happy.) Big advantage of double springs. If you break a spring, the valve stays attached and you get a bent valve and a dented piston. Break a beehive spring and the valve is inside the engine. Makes for a really unpleasant day.

Last edited by derekderek; Apr 2, 2019 at 07:13 AM.
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Old Apr 2, 2019 | 08:49 AM
  #329  
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Originally Posted by derekderek
Those are rectangle ports. Not ovals. You sure about that 781 head casting number? What intake? And you need to know head-valve-piston-deck height, etc before deciding on a cam. Unless you want a nice middle of the road easy on springs cam. https://paceperformance.com/i-625508...zz502-502.html. disadvantage of buying the ZZ cam is buying all the rest piecemeal. Though some consider it an advantage. You need to pull the timing chain to see if the cam retainer face and bosses for retainer bolts are there. Probably are though. The Howards double springs will require machining valve guides for those seals. Umbrellas won't fit in any double spring. (Little Mouse and boat guys will be happy.) Big advantage of double springs. If you break a spring, the valve stays attached and you get a bent valve and a dented piston. Break a beehive spring and the valve is inside the engine. Makes for a really unpleasant day.
I found a set of 063 oval port heads that I'll be running.
The engine will be getting rebuilt, taking it to the machine shop.
I don't know the gear ratio of the rear
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Old Apr 2, 2019 | 09:01 AM
  #330  
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I'm also using the stock aluminum intake, the stock cast iron exhaust manifold. Holley 800 cfm carburetor.
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Old Apr 2, 2019 | 09:39 AM
  #331  
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I don't think there is a stock aluminum oval port intake. How about a close up pic of the intake and head ports? And the head casting number .

Last edited by derekderek; Apr 2, 2019 at 09:39 AM.
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Old Apr 2, 2019 | 10:13 AM
  #332  
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Originally Posted by derekderek
I don't think there is a stock aluminum oval port intake. How about a close up pic of the intake and head ports? And the head casting number .
In 69 Winters made the stock aluminum quadrajet intakes for all the oval port head big blocks. I think the intake casting number is 3947801.

Last edited by CanadaGrant; Apr 2, 2019 at 10:21 AM.
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Old Apr 2, 2019 | 01:38 PM
  #333  
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Glad i said i don't think it. OK, you do have the cam retainer plate face and bolt holes already tapped. So you can run a stepped nose Gen 6 cam. As long as cam has fuel pump lobe.
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Old Apr 2, 2019 | 06:24 PM
  #334  
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Quadrajet intake in aluminum for the 69 BBC. If your going to use a square bore look into the LS6 intake.

The LS6 is a rec port though so make sure to use rec gaskets.
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Old Apr 2, 2019 | 07:57 PM
  #335  
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Has to. He has rect port heads. An oval intake won't even cover them.
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Old Apr 2, 2019 | 08:17 PM
  #336  
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If you look at the intake ports in the first and last pic in post #325 I think you will see that those are stock oval port heads.

Last edited by CanadaGrant; Apr 2, 2019 at 08:19 PM.
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Old Apr 2, 2019 | 09:00 PM
  #337  
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Machine shops generally buy lots of parts off the big name vendors, suggest you work with your machinest on parts along with everything else. They buy so much from them they get them cheaper that may not help you, but if there happy making more a good thing as your fate is now in there hands.

Last edited by Little Mouse; Apr 2, 2019 at 09:05 PM.
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Old Apr 2, 2019 | 10:09 PM
  #338  
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They look bigger than ovals. Then I compared them to rectangles and they are not as tall. I think those ports have been opened up quite a bit. I have a set of 215 heads done like this.
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Old Apr 2, 2019 | 10:26 PM
  #339  
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Originally Posted by derekderek
I don't think there is a stock aluminum oval port intake. How about a close up pic of the intake and head ports? And the head casting number .
The intake is aluminum
I'm going back the 063 heads
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Old Apr 2, 2019 | 10:41 PM
  #340  
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There is also a date code on your intake but it's stamped (cast in) under the tin oil splash shield that is blind riveted to the bottom. Makes you kind of wonder why they bothered...

Last edited by CanadaGrant; Apr 2, 2019 at 10:58 PM.
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