Drawing Board - possible 525/540 engine build

[pat mccarthy]

Okay so for a few weeks I've been trying to figure out what I want to do for a new engine in my 67 chevelle. Here's what I've come up with so far... I'm building for a roots type blower so Ill keep the static comp. around 8.5 or so. Feel free to shoot this down - that's why I'm posting it, ha. Also feel like I need to mention that I will be running off of pumpgas bc it will be a street/ strip car not just drag.

Dart 9.8" block preferably w/ 4.125" stroke
(525cid so its not ridiculous on the road... can do a 540 combo though)
Dart 18 degree Race series oval port heads w/ 330cc runners etc...
comp cams solid roller grind:300BR-14 lift:0.652, 0.652 and duration @ .50: 255, 262 (cam is for superchargers)

*this is just the foundation for now but I'm open to advice or thoughts - please be honest - I want this thing to be right. If you think a blower would put this over the edge for the street as well please let me know. I've never built an engine with a blower so I'm not sure how it'll workout with the camshaft and displacement i've chosen to work with. If you think I need to go with a hydraulic roller or cam with different specs instead please make a suggestion on a replacement cam.

-Thanks

well i built many bbc for street to water.mud .hill climding if you want a bbc i can help. your post said 4.125 you mean 4.250 x4.500 bore ?or 4.125X4.600bore 548 or 4.000x4.600bore 531? your going to use the dart marine 18. heads? why? they were built for this use ?could use the pro one 335s or 345 pro ones or 355 i have a set i would sell 345s and 355s the solid roller will work fine on the street with hippo s roller lifters cam is tame if you going to look for big HPnumbers i would keep away from hyd roller lifters in this build less your going short valved travle hyd roller lifters you can take this to PM if you want or get my thoughts on builds with a 9.800 deck block.the 330 runner is not hard to get in a head that will be easer to get ?building a hi hp car for the street is not new . cops are going to give you a hard time if your racing in town no matter if you have 325hp or 1500hp