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Topic Review (Newest First)
Today 12:54 AM
jexrod I finally separated the engine and tranny, found the flex plate in good order. Started the engine with no tranny or exhaust attached and sounds like the noise is coming from the engine.... Haven't been able to adjust the carb, car starts immediately but dies when I step on the throttle. I hooked up a test light and it looks like its about 12-14 btdc. Oil pressure at idle is around 52. Sounds like a very loud backfire, any ideas on what to look for?
04-02-2014 03:36 PM
jexrod Thanks, I'll inspect this weekend... hopefully the damage is visible and I'll start the tear down.
03-31-2014 09:05 PM
techinspector1
Quote:
Originally Posted by jexrod View Post
So I finally dropped in the engine and tranny, had a hard time getting the gas from the tank to the carb. After a fuel pump swap the car stayed on for less than 10 sec and this clanking noise started. It got dark soon after so I was unable to do any major investigating. Any ideas on what it could be? Car ran for about 2 minutes and I shut it down.

Chevy 327 Rebuild Noise - YouTube

I appreciate all the help!
Cracked flexplate. Get a SFI approved plate. They're tougher than a stock piece.
03-31-2014 07:57 PM
jexrod So I finally dropped in the engine and tranny, had a hard time getting the gas from the tank to the carb. After a fuel pump swap the car stayed on for less than 10 sec and this clanking noise started. It got dark soon after so I was unable to do any major investigating. Any ideas on what it could be? Car ran for about 2 minutes and I shut it down.

Chevy 327 Rebuild Noise - YouTube

I appreciate all the help!
03-21-2014 01:02 PM
jexrod I dropped off the driveshaft yesterday to be cut. I ended up installing the 700. Pretty easy swap except for slight clearance issues on the tunnel. Servo was rubbing. I ended up using Autolite 103's for spark plugs. Had a difficult time sourcing u joints (the zone, p boys) stores had a larger u joint specified in their system. The drive shop will source the right ones. Just installed the TCI lock up kit inside the pan, now trying to figure out how to wire the external harness. Any feedback on how to install the included vacuum switch? Ideally after much research I would like for it to unlock with the foot brake and vacuum switch?
03-20-2014 07:55 PM
dwwl I would have to agree, that 66 impala is a heavy weight. Then you got the glide tranny. No matter how many ponies you get from the 327 cubes, that light weight nova even with 275 horses, will walk away from you. If you put a 350 tranny in that thing, it will be like driving a different car. If you want it to really move out, Put 4.11 gears in rear with a 700-r4 or 200 4r tranny and you'll have lower gears for street use and highway gears for the open road. Just a old guys opinion. Which those overdrives autos would of been around thirty years sooner. Got 355 cubes-200 4r tranny- 3.73 poss rear. what a mover.
03-19-2014 08:37 PM
jexrod Forgot to mention I'm using headers, thanks for the feedback.
03-19-2014 02:50 PM
ap72
Quote:
Originally Posted by jexrod View Post
Any suggestion on spark plugs? Do I look for a vortec engine plug or a 327 plug? gap? Thanks for the help trying to gather everything for this weekend. I'm using a generic HEI distributor.
a set of cheap copper replacement plugs for a 98 5.7L 1500 (stock vortec heads) will work just fine while you put the rest of the car together and tune it up. You can swap them after that or just keep using them, for most street driving they'll likely work just fine.
03-19-2014 02:50 PM
AutoGear vortec plug
03-19-2014 02:40 PM
jexrod Any suggestion on spark plugs? Do I look for a vortec engine plug or a 327 plug? gap? Thanks for the help trying to gather everything for this weekend. I'm using a generic HEI distributor.
03-18-2014 08:27 AM
AutoGear LOOKIN AWESOME!

Kudos to you on the follow up, we don't see that enough around here. PLEASE keep us posted. I don't think we see enough vortec headed street builds here. Theyre fine heads for the street. Can you imagine what guys would have went through to get Vortec head performance; at an over the counter price. In 1968; these would have been KILLER heads. They still are
03-17-2014 02:43 PM
techinspector1
Quote:
Originally Posted by jexrod View Post
Any guidance on how to measure the driveshaft?
http://www.iedls.com/asp/admin/getFi...&TID=28&FN=PDF
03-17-2014 02:27 PM
jexrod Finally, got some progress done on the car. I'm sure its the same ol' story, got busy and a lack of monies stalled the project. Anyhow, dropped in the 327 engine and 700 tranny this weekend and will try and tackle the accessories this upcoming weekend.

Any guidance on how to measure the driveshaft? I know I have to get it cut a couple of inches.
10-07-2013 01:35 PM
techinspector1 There's really not much to add to this thread that is over a year old, except to put in my two cents worth concerning max lift on stock L31 heads.

If a fellow is to use anything over 0.425" valve lift in these motors without mods, he's asking for trouble. Is there room to do it? Yes. Are you using up the safety margin? Yes. You don't put a motor together without some play (safety margin) between the bottom of the retainer and the top of the seal to account for an over-rev.
10-07-2013 12:35 PM
vinniekq2 welcome to the forum Gator,maybe start your own thread with as many details as you know?
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