No NEED to balance but it's always a good idea... SBC's are internal balanced blown or not.
A mid-'70 SBC will be internally balanced unless it's a 400 or you use an externally balanced 3-3/4" stroke crank in a 4" bore SBC block to make a 377/383 cid stroker.strokin said:Planning out my blower motor here. Main question is on engine balancing. I've always been confused in this area. I'm planning on using a mid 70s block, forged aluminum pistons etc... I'll be shooting for 8:1 or under compression. Im assuming most s blower motors are internal balance or have to be.
Blown engines can actually get BETTER fuel economy as the are more efficient... but not with wild *** cams and two big carbs. Look at Ford's Eco-Boost engine... they are turbo-charged.wayneooo said:gas is heading towards 5 bucks a gallon and you are gonna run a blower
Multiple carbs don't have to mean less mileage. But usually people who run multiple carbs like to "test" them every so often, and that means less mileage with those little bursts of power.Mojo56 said:Blown engines can actually get BETTER fuel economy as the are more efficient... but not with wild *** cams and two big carbs. Look at Ford's Eco-Boost engine... they are turbo-charged.
I have a single 800 CFM Edelbrock for my blown Hemi... I figure I'll never spin this thing over 5K anyway so all those additionl cfm's from two carbs would go to waste.1971BB427 said:Multiple carbs don't have to mean less mileage. But usually people who run multiple carbs like to "test" them every so often, and that means less mileage with those little bursts of power.
I'm running twin Holleys on my 327 and still get right at 16mpg at freeway speeds with 3.73 gears and no overdrive trans. But it goes down fast when I start having fun.