Join Date: Sep 2004
Location: San Francisco Bay Area
Re: 1969 T-bird time for an overhaul
With just $3500 I would suggest a 460 crankshaft for an easy 31 cube increase. Also, the 460 crank opens up your world when it comes to piston choices. It uses the same rods that you have in your engine but 460-specific pistons. Other than the crankshaft (stroke) and pistons (pin location) the 429 & 460 engines are the same internally (on any given year that they were both being produced).
With budget in mind, go with the OEM 460 cast pistons that have a 21cc (or so) dish. At 0.030" overbore, you will have about 9.75:1 comrpession ratio.
Depending on portwork done to the heads, 400+ hp would be very, very easy with your build along with a well matched cam, intake, carburetor, etc. Well prepped D0VE heads can support 700 hp in the right combo, not what you are shooting for here hence the cast pistons, etc. The engine combo is a little more involved, of course...not sure exactly what you want.
NOTE: The 429 & 460 crankshafts came with more than one size torque converter pilot hole over the years, so you will first need to know which pilot hole is in the back of your 429 crank so that you can specify the same pilot hole for the 460 crank.
We have 460 cranks in both pilot configurations. We also have a freshly ported, machined, and assembled set of D0VE heads for sale. Call, email, or PM if interested (contact info is in my signature line below).
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