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#11
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LONG ISLAND CORVETTES has the correct gaskets with the TAB on the intake rails.
I know people say to use RTV on the china walls... I personally like the rubber ones and I use some of the brown semi hardening gasket maker where the two gaskets meet.
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~JAG~ NCRS#65120 68 GTO HO 4 spd Alpine Blue /Parchment 2 owner car #21783 71 Corvette LT1 45k miles Orig paint - Brandshatch Green - National Top Flight - last known 71 LT1 built. 71 Corvette LT1 42k miles Original paint - Black - black leather - only black LT1 known to exist. NUMEROUS Lemans blue Camaros, Monza Red and Daytona Yellow Corvettes & a Chevelle or two... Survivors, restored cars, & other photos https://picasaweb.google.com/lh/myphotos |
The Following User Says Thank You to firstgenaddict For This Useful Post: | ||
ScottG (07-25-2019) |
#12
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nylon cam gear...
Charley is right about checking the play in the distributor...but, I can tell you first hand that mileage isn't the best gauge. Our survivor 70 L78 4spd Nova had about 22,000 miles and there was excessive play in the chain, so it was replaced. Most folks couldn't tell it was ever apart. Our survivor L78 th400 car had a similar situation, about 30,000 miles...when I took the timing cover off the chain almost fell off into my hands.
That design was very poor given the performance aspect of the L78 motor...I wonder how much it would have cost GM to have used better parts to begin with...probably about a $5.00 back then Just wipe off the grease. clean the gasket surface and put it back together...also, no need to remove the motor for a timing chain/gear swap...just pull the radiator and the other stuff and do it. -wilma
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02 Berger 380hp #95 Lots of L78 Novas Join National Nostalgic Nova! 70 Orange Cooler 69 Camaro |
#13
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I know I can put a chain in without pulling the motor but don't you think I should pull the oil pan to clean out all the nylon laying in the pan & in the oil pump screen
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#14
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absolutely!
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#15
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cam gear..
Quote:
good luck..wilma
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02 Berger 380hp #95 Lots of L78 Novas Join National Nostalgic Nova! 70 Orange Cooler 69 Camaro |
The Following User Says Thank You to WILMASBOYL78 For This Useful Post: | ||
earntaz (07-28-2019) |
#16
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good idea on all ends Tom.
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#17
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I agree if there are chunks missing from the sprocket you DO need to drop the pan.
AND THANK YOU CHARLIE for the tip on the slack by watching dist...
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~JAG~ NCRS#65120 68 GTO HO 4 spd Alpine Blue /Parchment 2 owner car #21783 71 Corvette LT1 45k miles Orig paint - Brandshatch Green - National Top Flight - last known 71 LT1 built. 71 Corvette LT1 42k miles Original paint - Black - black leather - only black LT1 known to exist. NUMEROUS Lemans blue Camaros, Monza Red and Daytona Yellow Corvettes & a Chevelle or two... Survivors, restored cars, & other photos https://picasaweb.google.com/lh/myphotos |
#18
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Good info, thanks! I will likely be attempting the same repair on my 350 without disturbing too much.
What replacement timing set will you be using for your survivor? |
#19
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Friend of mine working on his right now as well..
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#20
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They make the same link belt (?) timing chain sets with a steel upper sprocket. I would think that one of those would be closest to original. https://www.jegs.com/i/Comp+Cams/249...E&gclsrc=aw.ds
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Freddie 1969 Camaro RS/SS396 (427) 4 speed Last edited by big gear head; 07-28-2019 at 06:14 PM. |
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