Yes
Last year I had a thread about rebuilding or replacing my 500hr 525scs
I currently have 2 gen 4 454 4 bolt blocks, 2 gen 4 Skat 4340 4.25 cranks, 2 sets of Scat 4340 1/4" stroker rods, 2 melling oil pumps, and 2 pair of gen 5 088 heads to be refreshed I'm purchasing from Irish here on the board.
My reciprocating assembly and oil pumps are NIB
At machining I'm hoping for a 30 over 489.
Looking for a build kind of like Buds except not normally aspirated and propped to the low 5000's for longevity like my stock factory builds.
I'll run my 177s w/intercoolers for the time being unless I can find some 671's or 871's to replace them with before the build.
I'm looking for some 011 covers of the 731 gen 6 cam hoping it'll be a good compromise if I have to run the munckins until replacing them with the larger blowers.
As always I'm completely open to input on my thoughts towards achieving my objective.
Unfortunately I don't have the deep pockets or outdrives which will support the high hp low time between refreshes as some here may enjoy.

See ya,
Kelly

Kelly, nothing wrong with building the 489, you have the parts, so go for it. As far as what you are trying to do, theres not much that really relates to Budmans N/A build. You are planning on running a large low velocity intake port iron head, with a less than ideal flowing exhaust port. I am not a fan of those heads, and just about anything from Dart, AFR, Brodix, would be a major improvement to the build.

Since you'd be running a blower, here would be a quick example. AFR 305cc aluminum heads with CNC chamber option. These heads would stomp all over those GM iron heads, in both torque, and HP. I'd go with a flat top piston, and try to keep the compression up closer to 8.75, or even 9:1, rather than a traditional roots blower 8.0:1 or less. Reason being, you have a tiny blower. Giving the engine some static compression, will allow you to turn the blower a little slower, and make more power on "motor" so to speak.

As for the cam, I'd forget the 731 on this build. For 2 reasons. 1st reason, for the cost, you can have Bob Madara grind you a much better profile. Secondly, that cam leaves a little on the table as far as lift, and the 112LSA, might not be the way to go with the baby blower. You wanna keep overlap to a minimum, and try not to blow the boost out the exhaust valve, you wanna maximize what you can out of that tiny blower. When the time to upgrade blowers comes, you can still do so.

Generally speaking, putting a 177 blower, on nearly a 500inch engine, is something I wouldnt recommend. However, if you MUST use it for now, you need to build an engine, that will make good power without boost. Then add the 4-5psi to it. I'd like to think, with the above components, 675HP is possible. Maybe even a bit more. But first, you need to build a 575HP engine, not a 425HP engine under that little blower.

Dude, that is some of the best advice given on here. You absolutely hit the nail on the head.

Great job on the build. Glad to see it turned out so well. I would love to see more threads like this. This is how it used to be. Keep it up guys.
Eddie

Thank you sir! Means alot coming from a man of your caliber!

Thats just my mindset, thanks for the insight and it's just the kind of info I'm looking for.
I was going to start a thread here soon and l saw a tidbit of this when I found the intake thread after you mentioned the build.

I wasn't attempting to railroad the discussion here, just get a link.
I'll search harder at a pc later rather than jack with this cellphone watching football.

BTW, way to go on those mills for all of y'all, awesome returns indeed. :coolcowboy:

See ya
Kelly

Don't sell yourself short brother. You are a HUGE asset to this site. The OSO community is very lucky to have you here.
Eddie

Ok I think joe and Eddie need to get a room! Lol

LOL. I give credit where it's due. And in this case, it's due.

I agree. Just yankin chains. You, joe, mike tkacjshd(however you spell it), Bob M, SB, and a few others are great assets and give great technical advice.

Man, Scott's still bustin my nads over that one! Hey, hasn't anyone else had boatenginebuild neurosis? ;)