SB Road Racing/Nascar/Sprint Car/Reving BUDGET BUILD

SRT_DSTRHOLC said
Thank You, this is good advice and information to think about.

The other part of this is, I really want to try and do things like the porting etc myself and learn by trying.

I want to try and throw this engine together like you mentioned and just replace the critical parts like bearings and rings.

It really is between the 5.2 and 5.9. I like the 5.2 because as some have mentioned I will be able to move that RPM a little higher. Here is the thing I have learned along the sport car path. If I can make power in the higher power band and eliminate the amount of shifting I have to do because I can carry the car through the corner and out with a lower gear than I am better suited.

If I could find a way to mix the 5.2 and 5.9 (340) then that's something I would look at. There is a 340 for sale, but it's bare as bare and would need a cam and heads.

I am in NO HURRY to figure this out, I just like the brain storming part with everyone as I am not looking to perfect this, I just am looking to find a starting point for the path to the 6.4.

a stock 5.9 is probably safe to 6K but more than likely would run out of breath well before then.

with ARP bolts and aftermarket (lighter, forged) pistons i don't see why it couldn't live to 7 (with proper oiling mods)

but again, without an induction system that could support that it's kind of a moot point. the valve springs and ports will let you know how far you can go.

i guess the point i'm trying to make is that basing a decision on high RPM output because of cubic inches, when you'll rarely, if ever, need or exceed that threshold is kind of shooting yourself in the foot when the trade off is torque and easier production of power due to more CI.

there's tons of online tutorials and porting templates for the home porter, so go nuts. what's the worst that happens? you goober one up and gotta go to the yard and get another?

building that 340 would easily cost 3X as much as snapping together a 5.9 for the same power.