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Just got back from the the tuner(aka Blue Cat) yesterday.after having lifter issues and having to rebuild my 450 cid engine .anyway had to replace the cam recoated the pistons rehone the block lifters and cylinders and a-line hone mains.
anyway while the engine was down I had Greg Good port my heads.the previous cam had 260 intake duration this cam 255 intake duration(and it does drive better) .the dyno sheet in red is last year’s. my ? is I’m running a stock MSD intake .My ? is how much more hp will I pickup with a ported MSD intake ?
throw me some #
Looks like you picked up everywhere which is nice. I guess with a well ported MSD you would see another 15/15 (similar to this across the board) or maybe even 20hp at the higher rpms.
Looks like you picked up everywhere which is nice. I guess with a well ported MSD you would see another 15/15 (similar to this across the board) or maybe even 20hp at the higher rpms.
I think your pretty spot on with that....especially considering the displacement in play right now although alot of it depends on how good the heads are as well.
The better the heads the more an unported MSD represents a restriction in the airflow pipeline.
Here is an older thread (still very relatable data of course) showing some of my customers gains going from unported MSD's to my ported MSD's
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How much more? 
