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adjust seat back on 80-81 since there is no from the factory seat adjustment provision,the easiest way, that works well is to cut a length of rubber heater hose or small stiff automotive hose and slide it onto the lower ed behind the seat..sometimes another over the top..to get the angle you want.

smog stuff do check your local laws for smog equipment and test rules..If your state or county has provision for older cars or collector cars that make them exempt..yippee..you can consider to get rid of the stuff..all of it !! Sometimes the "collector" or classic category has some driving...

rear spring outer bolts update..I installed 8 inch rear outer spring bolts..to bring rear ride out down, which was too high due to a new stiffer rear spring. About one inch lower can be gained: the key to making this easy is to block the frame up after jacking, then a jack under the spring...

Caution the AC Delco spark plug Rapidfire #2 option for R45TS 3 different of same For the later C3 where the AC Delco R45TS is specified, you might consider the newer Rapidfire AC Delco. It is the number 2, but look out as there are at least 3 different versions of this same plug..so it is...

L81 pluts and tune Gerry LP correctly says "initial" timing. An "initial" timing set, in this case 6 deg BTDC can be used to get an engine runniing, but optimal timing is best set using dwell meters, and exhaust / tune analyzers. so if not in your bag of tricks, after installing your plugs it...

81 4 spd 81 4 spd, here..All the smog chocked up Calif stuff is gone..Installed are Edelbrock intake, carb and cam, Hypertech chip. The AC Delco R45TS, is a tapered seat, no washer, thus no washer to compress..be careful on torque..when it is tight it is tight. Gap .045. Good luck getting to...

outer spring bolts a years after reply..in case anyone looks. Great forum guys !!! lots of very helpful comments: I hope I can add to the value here. Replacement outer spring bolts for C3 C4 are available from all the usual suppliers..auto grade, no need to risk the hardware store bolts..(ever...

keep looking..and physically look at more..learn first, then buy....unless you find a perfect car right off. THe C3 is costly to "fix up" compared to current values. But...do get one !!

new to forum with 81 Corvette 4 spd new to me In WA state, East side Spokane area with an 81, dk blue met, dk blue int, 4 spd, new to me. I like this body design..think they are way under-sold by many sellers..their loss, my gain. The Haggerty price guide has it about right..for now. This one...