 cruz wrote: |
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just a note:
if you're building a hemi with the factory eight plug heads (often refered to as a sixteen plug hemi), the heads of that period are always made of aluminum. If it's from the 1969 and earlier era the heads were usually done by the engine builders, and many were made of cast iron. Almost never were aluminum heads ever painted. Also if the case of a twin plug hemi the norm was to use the magnesium oil pump assembly casting as well as the aluminum water pump housing. Once again as a rule these were not painted. The only time these two items were used in a stock car was in 1965 race hemis (as well as AFX altered wheel base cars), but often found their way in the Prostock cars in later years.
With a 1970 prostocker, you will need to add crank triggered ignition to the harmonic balancer on the crank shaft nose (they were using it thirty years before the guys racing off brands discovered the advantages it had). Also the hemis were well known for holding huge amounts of oil in the top end of the motors, so they used deep sump oil pans (usually with a sump that was about 2 1/2" deeper if not 3"). The oil pan should have the -16 steel braided hoses feed into the outside (two hoses)of the oil pump (90% of all race hemis used a Milodon oil pump cover and swing pickups).
All race hemis have the battery in the trunk, and most used the optional lead battery case (really heavy), and the 135lb. buss battery (another real dog to handle). The transmission shifter assembly (noticed you were using a four speed car) is not the standard Hurst Competetion Plus, but a highly modified one that has much heavier shifting linkage and is also relocated back by the tail shaft housing to make the shifting rods run parallel with the input shaft of the transmission. The actual location is about six to eight inches further back and of course sets lower. A 426 hemi used serious headers. Small tube ones were 2 1/8" diameter, and many used 2 1/4" tubes feeding into 3 1/2" collectors (16" long for a four speed car). The rear end should be a Dana Sixty and AFX leaf springs (they are longer and mount in a completely different place with the axle housing closer to the front spring perches). These are still the best leaf springs ever produced for a race car. They don't use the basic hemi motor mounts, but use what's known as a "block plate" front and rear. Being as it's a stick car; don't forget to install the chain (or cable) between the block and shock tower on the driver's side (keeps the clutch linkage and shift linkage from hanging up during the launch). And lastly it was the norm to tie in the front frame rails to the rear frame rails (Mopar actually sold a kit).
well I'm setting here watching your tach rock steady at 7,000rpm getting ready to lauch the missile!!
gary