Found a motor for my car. It's really BOSS:D

Unit 5302 · 10-31-2001, 02:47 AM

Peak power will depend on the cam. My uncle had no problems driving around town in his 1969 Boss 302. The Boss 302 is not expensive to build, mostly because there isn't much to build. The heads flow nearly 300cfm stock, there is no reason to port them. As far as the parts, they had a built on rev limiter at about 6000rpm. Forgot the exact number, but removing that is the first step in getting one of those engines to perform. Changing over to an electronic ignition and getting some good exhaust can do wonders for that engine. On an engine dyno a stock 1970 Boss 302 (slightly weaker all out) my uncle used as a reference made 364hp and 340lb/ft. Take into consideration the compression ratio on that engine was dropped to run on 87oct pump gas and you begin to understand just what kind of monsters the engines really were. The Boss 302 will put down 400hp on an engine dyno when setup near stock and properly tuned. 400hp is 400hp, regardless of whether the power peaks closer to 6000, or 4200 like the old 5.0HOs. You set your gear up to run quickly into the powerband, get a better ignition, a good cam, a good exhaust (stock Boss 302's had piddly 2") and tune that carb. You'll have a very powerful engine capable of revving to more like 8000rpm that will make well over 400hp. Even if the powerband moves high, we now have the luxury of 5spd overdrive gearboxes to keep the revs down.

On a side note yes, the Boss used forged internals but it only had 4 bolt mains on 2,3,and 4. The front main was 2 bolt. The Boss blocks are said to be stable to about 600hp or so.

A good Boss engine on the open market will sell for somwhere between 6000-8000.

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10-31-2001, 02:47 AM	#5
Unit 5302 Registered Member Join Date: May 1999 Posts: 5,246	Peak power will depend on the cam. My uncle had no problems driving around town in his 1969 Boss 302. The Boss 302 is not expensive to build, mostly because there isn't much to build. The heads flow nearly 300cfm stock, there is no reason to port them. As far as the parts, they had a built on rev limiter at about 6000rpm. Forgot the exact number, but removing that is the first step in getting one of those engines to perform. Changing over to an electronic ignition and getting some good exhaust can do wonders for that engine. On an engine dyno a stock 1970 Boss 302 (slightly weaker all out) my uncle used as a reference made 364hp and 340lb/ft. Take into consideration the compression ratio on that engine was dropped to run on 87oct pump gas and you begin to understand just what kind of monsters the engines really were. The Boss 302 will put down 400hp on an engine dyno when setup near stock and properly tuned. 400hp is 400hp, regardless of whether the power peaks closer to 6000, or 4200 like the old 5.0HOs. You set your gear up to run quickly into the powerband, get a better ignition, a good cam, a good exhaust (stock Boss 302's had piddly 2") and tune that carb. You'll have a very powerful engine capable of revving to more like 8000rpm that will make well over 400hp. Even if the powerband moves high, we now have the luxury of 5spd overdrive gearboxes to keep the revs down. On a side note yes, the Boss used forged internals but it only had 4 bolt mains on 2,3,and 4. The front main was 2 bolt. The Boss blocks are said to be stable to about 600hp or so. A good Boss engine on the open market will sell for somwhere between 6000-8000.