I've currently got a Goodwrench 4bolt 350 short block and a set of TFS G1 heads with about 20k miles. At a minimum, I'm looking to deck the block, add a set of forged pistons and drop in a cam kit.

What's the max CR that I can run with with the aluminum heads?

Any particular cam recommendations?

How much power can the cast crank and rods handle?

The rods, as far as I know, should be forged. As far as I know, chevy doesn't use cast rods in the V8's, probably not in any production engines either.

Don't know about the rest. I know Pat Kelley said he drove a car into the 12s with a 2bolt block, so your 4bolt should be good to go. I've ran my (2blt) cast crank, cast piston, stock rod 355 (270ish HP) up to 5500 a few times with no problems other than chucking fan belts.

be careful with the G1 heads...you can have piston to valve clearance problems with the intake valve.

TFS G1 heads are particular about intake rocker arms, too. Comp Cams makes special ones for the Twisted Wedge heads, I have them on my 400. There was NO WAY ON EARTH to get proper rocker geometry with "ordinary" Comp Cams roller rockers. I think this is why the Twisted Wedge heads have a reputation for wiping valve guides.

Far as I'm concerned, below 5500-6000 RPM, a cast crank that is properly balanced is just fine.

I have done a few 350's with cast crank and stock rods and bolts. I try to keep them under 7000. Let me say these are BOMB motors. I have not had one come apart. I have one now in a 78 Malibu that runs 11.76 I shift at 6800rpm and cross at 7200. A friend built it for a dirt tracker and he ran it for 3 yrs. It has 12.5's a old set of Bow Tie heads. I bought it less cam for $700.00. I have been trying to sell car so I did not car that much. I put a small cam mech .507/.519 lift.(this was it's 4th engine in 18yrs.) I will say as cheep as eagle rods are I would buy a set if I was you. I bought some last winter for a 383 in my boat.
John

Schurkey do you happen to know the part number for those rockers! i have looked everywhere1 I too have a pair of twisted wedge heads and as you said Valve train geometry isn't right1 Thanks and sorry for robbing your post! I ran stock rods and bolts and cast pistons with mine to the tune of 12.50's at 3500lb. I shifted at 5500 rpm and it lived fine!

I run the TFS roller rockers - picked up from Summit.

I know there can be problems with valve-piston interference with these heads and long duration cams. Don't know the specifics though - anyone have better info about this?

With my trick flows I could not run more than about 525 lift with flat tops! My heads made awesome torque!

Comp Cams has four part numbers, for the various combinations of 3/8 and 7/16 stud, and for 1.52 and 1.6 ratio.

1307-8 --- 3.8 1.52
1308-8 --- 7/16 1.52
1309-8 --- 3/8 1.6
1310-8 --- 7/16 1.6

The "-8" refers to a set of eight. These special rockers are ONLY needed on the intake side, NOT the exhaust.

I do not know if these same rockers are needed on the Gen 2 TFS Twisted wedge heads. They saved my butt on the original TW heads, though.

Thanks Shurkey for sharing that info! I own one of the 1st sets ever made! I could hardly wait to get them! It is time for me to tear mine down and check them out!