Boss 302 engine
Thought I'd list some of the major points on the 1970 Boss 302engine that I chose to power my Broncobra roadster...first off it did not have a good set of heads so I chose to stay with Iron heads manufactured by World & then slightly modified them for my purposes..mostly just cleanup and matching to the intake and exhaust manifold, opened up the combustion chamber a bit the heads have 2.02 inch intakes and 1.60 exhaust valves which are Moroso, With the exception of valves, I used Comp cam components in the valve train ...rockers, lifters & push rods, they couple up with a Comp cam flat tappet hyd. with .540 lift and 240 degrees duration & driven by a Comp cam dual roller timing chain & sprocket. James duff long tube headers, Holley 650 cfm single inlet carb fed by an Edelbrock fuel pump & an Edelbrock Torker 2 aluminum intake manifold.
Rotating assemblies by Ford Racing...forged crank and rods, all assembly bolts and pins are also Ford Racing, Speed Pro 11:1 flat top forged aluminum pistons were also used.
The little Boss engine has four bolt mains and the block is heck for stout and hard to find as is the Mexican built block. Block was professionally checked for cracking etc. then align bored and a clean up cut was made on the deck, all threads were chased, cleanup of 30 thousandths was made in prep for the Speedpros & and the block steam cleaned before assembly, rotating assemblies were dynamically balanced and print assembled using Speedpro rings, copper head & exhaust manifold gaskets. Ford racing supplied the reverse rotation high output water pump and the oil pump, dual remote oil filters were also added for insurance, 130 amp billet aluminum alternator was also used. A Griffin radiator was used for cooling. Lot of things I didn't list but it was a labor of love and difficult to explain. I am quite fond of the small block Fords and have used them in many of my builds for myself and others...I won't be putting one in a Chevy or vice versa a Chevy in a Ford although that is standard proceedure in street rods I won't do it!
Bottom line is that building one like this isn't necessary in order to have a way sweet ride and it sure isn't inexpensive, cut one corner or make one mistake and all your time and $$ is gone in one bang...do it right and it may still blow up eventually, such is true sadly enough but one could buy 9 or 10 good rebuilt short blocks for what this one has cost...I just wanted to do one my way and that unfortunately is expensive.