Slant six turbo cost analysis: 300 hp

ok here is the majority of the parts from my build. it is capable of 300+hp and most of the parts are good for 500+. only things i have done to my motor are a comp cams 264s, 340 valve springs and fresh rings. i suspect i might have been better off with the stock cam but i would recommend the springs if your motor is high milage.

hp valve springs $40 ebay
used holley 600-650 double pumper $50-$150 new $450. setup for blowthrough $550-$750
rebuild kit for carb $35-$45
hangar 18 mods are easy. if you can rebuild a carb you can do these mods. seems like a lot when you first read through it but its really easy when you break it down and start doing it.
nitrophyl floats $12 on ebay
spectre 9849 carb hat $65-$100 for high and low profile 98499
aem uego wideband o2 sensor and gauge $170-$230 plug and play, works well
ebay/china t3/t4 turbo kit w/ oil line, bov, wastegate, heat shield and exhaust flange $189. this turbo actually recently took a crap on me. spend some more for your turbo lol. hx35's can be had for around $200 used and will push up to 27psi efficiently. they are hearty and hold up well. you pay for a quality turbo with them not just the name. cxracing has a line of gt35's that are sized right for a slant. they are american engineered and china built. they stand behind their turbos and have a good customer base. their turbos seem to hold up pretty well. you could find a grand national turbo but i think 300hp is just about the limit if not stretching the breath of that particular turbo.
turbo $100-$5k
ebay 31x11x3.5 bar & plate front mount intercooler $98 this actually turned out to be a quality piece. really happy with it.
ebay 3" intercooler piping $109-$150 depending on couplings, bends and diameter
2.25 j pipe $35 jeggs all day.
3/8" exhaust flange that bolts up to the stock manifold $5-$10
t3 flange $10-$20 including gasket
2.5"-3" exhaust adapter $7 not necissary, i just wanted 3" exhaust. lol.
4bbl intake $100-$175
stock exhaust manifold hogged out, free
oil return pipe, scavenged from a dsm turbo i had kits are $30-$60
brake line for oil feed, vacuum, boost referencing $25 for 25' you are not going to use it all but its always nice to have some brake line.
boost/vacuum gauge $15-$40
regulator and electric pump are a must. if you have done your reading you will have come across an article on allpar that states the mechanical pump referenced will work up to 16psi. i found it inadequate for 8psi. going lean with a turbo is bad. real bad.
mallory 4309 and aeromotive 13301 are pretty common and work well. both priced around $100
walbro 255 inline pump with mounting kit $90
felpro 2104 steel reinforced carb to carb hat gasket $10-$20
throw in an extra $100 for various fittings AN,oil feed, just all kinds of random stuff that is overlooked.
if you dont run an internal wastegate you will need an external $60-$300. spend some money on this its what is going to keep your turbo from over spooling and blowing your engine.
bov $20-$300. gonna wanna spend some money on this too. cheap will get you by but you get what you pay for. im currently running a $35 piece and it surges. got a nice synapse to put on when i get it running again.
mushroom air filter $15

if i can think of anything else i will add it to this post. this setup will produce 300+hp probably closer to 450 or whatever you can get before the head starts to lift. the weak link in this setup is the turbo in my case. change that out and everything else is good for 500hp aside from the motor internals.

Junior,

Thank you so very much for this list; this is exactly the kind of post I envisioned happening when I started this thread; one that a newbie, building his first forced induction slant six could read and get a very good idea if what is involved, both financially, and in regard to the best parts involved on a first-time build. It's a complicated problem and not at all easy to know what to buy.... there are so many blind alleys to go down, and it's usually expen$ive....

You did extensive and exhaustive (no pun intended) research to come up with this "recipe."

You may have saved a lot of folks some meaningful money with this post.:cheers: