Quote:
Originally Posted by hamilton2008
im runn a ported msd intake on my head cam car. went 10.86 at 126 on this set up on the 3rd pass. 1.48 60ft.. the car just wasnt making power past 6200 rpms but now make power up to 7500. Also was haveing issues with the converter unlocking in 3rd. the intake picked mine up 25 hp. we are aiming for sub 10.5.... results will be posted
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That's awesome, glad you are getting it worked out. I am curious to see how fast you go. What was causing your power loss over 6,200? You are a 10th better on the 60ft than my stock converter times. I am hoping for 1.4x's with a stall.
What's the rest of the combo? I am guessing 1SS, 4K stall, drag pack etc. Race weight? How much tq did you lose going to the MSD down low on your combo? What was the DA of your first passes?
I would figure you would see more than 25rw with a ported MSD over stock on your combo. Sounds like a fairly large cam to spin to 7,500 in a 376. I am glad to see your short block is keeping up at those speeds. I gained 17/16rw with my ported stock IM/TB over stock and another 3-4rw peak with the ported MSD. You are just tapped out around 300cfm with the stocker no matter how you port it. A MSD will be a must at a certain point regardless of the tq loss down low. But I guess that is what they make big converters for.
Can you post up your stock IM to the MSD dyno graphs. I am really curious to see what kind of power past peak and where you peaked with both manifolds is. That will tell the story.
Keep at it man and report back. I am very interested.