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Originally Posted by Byots
You would need a modern worked/ported spider intake with max prepped dominator carb to match the top end power of the webers, and your low speed performance would then be terrible - and it wouldn't be period correct/original. Hofstaedter dyno tested all the factory HR inductions and the 58mm webers made notably more power at every engine speed, including in excess of 7,000 rpm. Dyno testing back in 1964 at SA showed the 58's to make significantly more top end power than the 1x4. It is a widely known fact that webers in general will give you significantly better mid range power, one reason why in a road race the webers give lowest lap times and why SA used them on all the factory race cars. F1 used webers and even today still use IR in what is essentially the evolution of webers, fuel injection. If the most sophisticated race series in the world uses IR, it must have some ideal attributes.
Bottom line, the 58mm webers were the top of the line available option from SA for the big block Cobras back in the day and was planned on being used on team race cars, especially at Lemans, had there been a factory effort (the big block configured coupe was even sent to Lemans in '64 with this induction: http://www.clubcobra.com/photopost/s...47492&cat=500). Anyone can interpret that as they may. More modern inductions are not of interest to me. |
How many cars did they sell with Webers? Using your logic you could also install a dual 4-barrel single plane tunnel port in your Cobra because it was available "in the day" and someone thought about putting one in a Cobra and actually did.
You are dead wrong about your contention that a single plane manifold equipped with a Dominator has no low-end performance. I had one and have the dyno sheet to go with it. It produced more low-end torque than an 850 that was also dynoed on the same engine. The engine was very responsive on both road courses and autox events, which would be difficult if not impossible for 58 mm Webers. All this talk is cheap though, why don't you get your engine finished and share the dyno results with everyone and then demonstrate drivability at some open track events.
This is a video of my car with a single 1150 cfm dominator, does it sound like there are any low speed response problems?
http://www.youtube.com/watch?v=mZaMFyZpKlo
H