A0136

Sleeve accelerator push rod. 513536X1 More commonly called the accelerator boot.

Canuck E Yes and no. The earlier Larks and later Larks have slightly different lengths. Later Larks (Crusier) had a longer wheelbase and longer driveshaft. Larks also used 2 different u-joint types (spicer and mechanics) so the drivelines can be the same length but not be the same. The 63 Avanti with automatic (powershift) uses a driveline that measures 46 9/32” center to center of the u-joint holes. The Avanti driveline used spicer u-joints. So some 62,63 and 64 Larks with automatic’s use a 46 9/32 length driveline. If one of those has the spicer u-joints it would fit. I don’t know if the tube size and thickness is the same or different. A driveline from a 3 speed OD car or longer wheelbase with spicer u-joints could be shortened and have the yoke changed. Steve

Kieth This is a colorized version that has the different system's separated. Scroll down to the 63-64 Avanti. https://drive.google.com/drive/folders/1eSSmIKiSS8lzc9kPYRm4Uk3yeu72TIlj Steve

The transmission only needs to be moved rearward 3-4” to install the new flex plate. Any reputable transmission / repair shop should be able to do that.

Jim Did your 72 Avanti still have the 400 Chevy engine. If it did the 400 is externally balanced using a different front dampener and flex plate than the 350 used. You will need to install the 350 dampener and flex plate. Steve.

Jim What did you find was causing the overheating? Steve.

Jim Checking water pump rotation, ignition timing and actual temp with heat gun as suggested above should be checked. Other possibility’s and thoughts. Thermostat installed upside down. Lower radiator hose collapsing. Does the lower hose a wire spring installed? Running the engine without a pressure cap, Leaking head gasket, cracked head or block. These will allow combustion gasses into the coolant. A fresh rebuild that has tight pistons will heat up quickly. Good luck hope you find the problem quickly. Steve

The 300HP / 327 used in the 67 Avanti has hydraulic lifters. The R3/4 cams were solid lifter and noisy.

I would expect the R4 with the 388 degree camshaft to be the one as far as sound goes. i would love to check that experience off the bucket list. Steve I have a 67 327 Avanti and it has a great sound but the high compression R4 with a much more radical camshaft would sound angry.

Just got mine in the mail. Looking forward to the read.

Fuel is warmed in the fuel line fuel pump and fuel filter. The return line at the filter returns some of the warmed fuel to the tank.