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[QUOTE]Originally posted by bwkelley76: [QB] <<< LOL, I must have misunderstood So here's some technical info to back up the Offy.. ..good tech read for the inclined I have an old friend named Ed Mosler ...some of you might have heard of the guy. Ed is a well-known cylinder head porter and engine builder. Although he seems to prefer Fords, he designed the infamous Buick 3.8 V6 Grand-National motor back when he engineered for GM. The guy is an absolute legend and has over 40 years in the racing industry. He built a few motors for me over the years that were badass to say the least, and I definitely trust his opinion. So I decided to ask him about the Offy intake. Ed loves the Offy intake and gave me some great tech info on it as well as some advice on how it will work with my combo. The Offy is a very misunderstood and improperly used intake, but when used in the right combination it makes incredible power. ..As Offy says in their tech descriptions, the RPM band depends a lot on what size carb you run. With a larger carb you lack some low-end, but no matter what the intake has great power all across the rpm range. ...much better than any of the Edelbrocks. The problem with Edelbrock is that they don't make a good "all-around" performance intake. The Performer and Performer RPM make great low and mid-range power, but both crap-out at lower rpm ranges than they advertise,I'd say 5800 for the RPM intake and 5300 for the Performer instead of the advertised 5500 performer and 6500 performer rpm. I've noticed this to be true on some of my motors that I've run those intakes on. The Victor Jr, Victor Sr, and Super Victor all have great upper-end power nd rev to their advertized ranges, but just plain SUCK at anything below 3500-4000 rpm. So most guys that want real power and want to rev high step up to the Victor JR or Victor, and just live with the lack of bottom-end power. The offy is truly the answer to this and that's what is was designed for. It's a short runner, open/divided plenum design, which is meant to run the engine as two 4-cylinder engines with 2 decent sized open plenums, and no pulse interference between the adjacent cylinders. So instead of having 8 cylinders fighting over the same air/fuel space, you have two separate plenums feeding 4 cylinders each. Very effective design and their throttle response and high rpm capability is very similar to an individual runner/stack setup or a Victor intake, while bottom end torque potential is comparable even to a regular Performer intake. Ed Mosler states that with my combo I should run a 1" or even a 2" 4-hole spacer ...if I have the hood clearance, to speed up venturi speeds through the carb, adding a generous amount bottom-end torque to compensate for the large carb, without sacrificing higher rpm. In my case I would NOT need an "open" spacer since all that does is add plenum volume and higher rpm potential. The offy doesn't need that extra volume, and it would defeat the purpose the center divider. So with that intake, my carb and a 1" 4-hole type spacer, the stock '69 heads, and a moderate to large cam, It should be an absolute beast and rev like a set of IR stacks! We'll see how it turns out. So now I have an Edelbrock Performer RPM for sale if anyone is interested. lol [/QB][/QUOTE]
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