Hello, I'm a "new" member who has been viewing for about 5-7 years, in fact I had a different member name on the "old" Hybridz site back then. It looks like I'll need to change it again, since I didn't know there was another Rat Fink, spelled Ratfink, oh well, sorry Ratfink I'll change it when I figure out how to.
Anyway I wanted to introduce the current car and run my thoughts past you guys, especially Grumpyvette if he's reading this.
My current Z car: (third I've had, but only one now) 1973 240Z with 350 ZZ4 crate motor, fastburn aluminum heads, Holly 750, 9.6:1, T5, R200.
It dynos at almost 300RWHP, 325ftlbs, but I want about 400RWHP and 400ftlbs, maybe more with the occasional shot of Nitrous. I think this seems to be fine for my R200 and 280ZX turbo axles. Need bigger tires, I know.
If I go with a built 383 I could get those numbers NA but probably would need really good gas and a fairly high compression ratio and maybe be a little less streetable. I'm thinking of a Weiand 144 blower for those extra 100HP and ftlbs, and a 100 shot of nitrous on top. (If you see Mad Max when you're 16, it can have lasting effects)
So my existing low end is not forged and I don't think it'll put up with that abuse. Also the 9.6:1 won't take much boost either. Or will it? I have some guys who have built decent HP telling me that I should just bolt the 144 and 100 shot to what I've got and run it with lot of timing. Redo the low end if/when I blow it up. Thoughts?
BTW, I just don't trust my own bottom end work at those high power levels. I won't install a rotating assembly in my block this time.
I could spec a 383 crate short block and use my heads. What do you guys think is a good way to build the 383 if I want to add my existing heads, the 144, and nitrous myself? Weiand says 8.5:1, and my friends say that's CYA conservative and 9.6:1 should still allow me enough boost to get the numbers I want.
Any opinions on OC/LA speed shops? I've been going to Superior in Anaheim. They could do the whole thing, but $$$.
Oh well, any advice would be greatly appreciated, thanks