Alright i have a 88 irocz 305tpi iam in the process of building a 400sbc 30 over.. so far i have bought the weiand stealth ram kit, afr 195 heads 65cc, xfi 280 retro fir hydraulic roller cam 280 288 duration @50: 230 236 valve lift 576..eagle rotating assembly all forged mahle pistons, h beam rods 6 inch and a forged crank... what type of horse power could i expect and could i possibly throw a turbo on this set up

 

low-mid 400s

Sure; you could throw one in the back seat floorboard or something, shouldn't be a problem. Wouldn't hook it up to that motor though.

 

30 or 36 injectors??

 

I think you'd do better with 30 or 32...

Smaller injectors with higher fuel pressure, tend to do better than too-large ones with low FP.

 

Mine is a close comparison
I have a stockblock 400 with 4.125 piston and 3.75 crank and 5.565 rod.
I have the 280xfi (flat hyd version though)
9.2 compression, 1 7/8 headers, LT1 intake (miniram),
3550 lbs with me in the car, 3.75 gears, 3500 stall
12.1@111 na

 

How much HP does urs make

 

According to this calculator
http://www.wallaceracing.com/hpcalculatorquarter.php


Your HP computed from your vehicle ET is 355.57 rear wheel HP and 395.08 flywheel HP.
Your HP computed from your vehicle MPH is 350.87 rear wheel HP and 389.86 flywheel HP.

I think I was a 1.64 60ft

Remember, hp means nothing if you don't have a proper combo (gears, stall, traction)

 

Thats a 400-420 whp build if it has 11:1 comp and ported intake. And good ring seal lol. But 380-400 isnt out of the question

If it was under or around 10:1 you could turbo it. Almost identical to what i used to have in my first turbo build

 

On AFR's site they have listed a 383 with that cam and the 195's at 10:1 compression ratio and performer RPM making just over 500 at the flywheel. So figure a 400 making an easy 25 horepower more. If you haven't bought the heads yet and are building a 400 pay the extra and go with the 2.08 valves or move into their 210s and get a 2.1 valve.

 

I bought the heads already, but I am still going to change the springs on them

 

Call afr and have them swap you springs for the 8019 springs

 

A machine can switch the springs out right? Since I already have the heads I am just ordering upgraded springs

 

Well yeah but you can purchase a valve spring compressor/remover for $20 and save yourself the machine shop cost and their turn around time.

 

I have a very similar combination and it made 386 RWHP which is between 425 and 450 engine horsepower.

406 Stealth ram, E-tec 200 heads, 10.0 compression, 6" rods, HR 280/280 226/226 .554 lift 112 LCA cam, 1-3/4 headers