It's difficult to have your cake and eat it too. I for one have noticed a difference from 6x to E-heads. With the ported 6x's and the small roller 224/230 low rpm throttle response was incredible. Now with the big cam 252/262 and 235cc E-heads
[email protected] the engine is not happy below 1500 and is lazy up to around 3000 rpm.
I am still trying to work out some carb issues (with a lot of help from shaker455ho) to help idle and off idle response. Even in a perfect world it will not be like the old combo.
Would I trade and go back, I don't think so! The rush from 3750 to 6000 rpm is worth the price of admission. I can deal with a higher idle and a little bucking if I fall asleep and try to drive it like the old combo. The engine is more comfortatable at 2500-3000 rpm cruise than the other engine was. It doesn't make any more temperature than the other engine, but is a lot harder to start and keep running when cold.
It won't cruise happily below 1500 rpm in top gear, more like 2000 to really get things flowing. Even if it did, I would never try to accellerate hard from that low of an rpm in 4th gear. That's what lower gears are for at low speeds.
The Car and Driver 30-50 mph top gear acceleration - what a joke. If I trusted anyone enough to drive my car and they did that test, that would certainly be the last time they drove any of my cars.
I can just see myself going 30 in 4th and pulling up to a Corvette or Viper and nailing it.lol And then they test an auto vs a manual. What a useless test, how about a 30-50 in 1st or second gear, that might be a meaningfull test.
Forgive my ranting and back on the subject. It's all what you want, I happen to enjoy the 12mph I picked up in the 1/4, btw, I think it will be more like 20mph when I'm done tuning, and am willing to give up some of the low rpm friendliness of milder combo. Life is about tradeoffs and think if someone wants that feel of hp and the feeling that your engine wants to keep pulling hard up top it is a worthwhile tradeoff.