Just curious, what some of the high-horsepower (550+RWHP) boosted cars are running as far as the bottom end and head combo goes ...

I want to get some ideas of proven parts that will last.

Please post following:

Heads (Milled or not)
Head Gaskets
Pistons/Rings
Rods
Crank
Main Caps (2/4?)
Bearings

Any other relevant information such as HP/TQ, etc.

 

Never dyno'd my car, but it went the time in my sig...

Heads (Milled or not) -- BONE STOCK
Head Gaskets - Felpro 1074
Pistons/Rings - WISECO -20CC with wiseco rings
Rods - eagle H beam
Crank - stock
Main Caps (2/4?) - splayed 2 bolt with the 3 center caps, stock front and rear caps
Bearings - clevite tri armor

New setup....

Heads (Milled or not) -- LE ported stock castings
Head Gaskets - Felpro 1074
Pistons/Rings - WISECO -20CC with wiseco rings
Rods - eagle H beam
Crank - stock
Main Caps (2/4?) - splayed 2 bolt with the 3 center caps, stock front and rear caps
Bearings - clevite tri armor

The new setup should make ~700rwhp through my th400/big stall.

 

Heads AFR
Head Gaskets Fel Pro
Pistons/Rings JE/Hellfire
Rods Oliver
Crank Callies
Main Caps (2/4?) Callies (4 on the 3 center)
Bearings Clevite 77H

Rich

 

Heads-stock mildly ported with stock valves
Head Gaskets- felpro 1074
Pistons/Rings- speed pro forged "blower pistons" -20cc/speedpro rings
Rods- stock rebuilt and magnafluxed
Crank- stock polished journals
Main Caps (2/4?)-2 bolt with arps
Bearings- clevite 77

I've got over 30,000 miles on this combo and will build my next motor the same way.

 

ProGram splayed caps on three and a strap on the front
Lunati Sledgehammer crank
Lunati ProMod 6" rods
Mahle powerPack -26cc pistons
Clevite coated H bearings
AFR 200cc LT4 heads
Cometic gaskets
ARP & Milodon studs

 

Ported TFS. (63cc)
Felpro 1074
SRP -31 / Total seal (non gapless)
Eagle H-beam ARP2000 rodbolts
Eagle 4340
4bolt splayed main caps (3 of them)
Clevite H series

 

Heads-Bone Stock, resurfaced w/new seals.
Head Gaskets- felpro 1074
Pistons/Rings- Diamond -34cc Dish
Rods- Eagle H-Beam 6 in's
Crank- Callies Dragonslayer 3.875in stroke
Main Caps (2/4?)- billet 4 bolt 22* splayed w/studs
Bearings- coated clevite's

 

Thanks to everyone that posted! Keep it coming. Just curious, what compression ratios are you guys seeing also?

I want to do this right and only do it once so I am trying to see what parts seem to really hold up/which direction I should be going with this if I am making a boosted 383 that is predominatly a street car.

 

Well that's what I have - a boosted 383 that's primarily a street car. I have 9:1 static compression, but to do that I had to open up the head chambers a few cc's as they were shaved to stock 58cc when I ordered them a long time ago.

 

Not in the car or running yet (but will positively be over 550), but...

Unmilled LE Ported Trick Flow Heads
Copper Head Gaskets (O-Ringed Block)
Custom -30cc Dished Diamond Forged Pistons....I'd have to look up the rings
Lunati Pro-Billet Rods
Lunati Sledgehammer Crankshaft
Milodon Splayed 4 Bolt Caps
Have to look up the bearings

Motor was built to take pretty much whatever I can throw at it.