Stu has a good point , you can do a stock style rebuild cheaper then a stroker or a prebuilt short/long block, those can get you to 500 Flywheel Hp which in my opinion is the max any one should go on a stock 545 trans.
346 build I sent out the door back in early Oct .(stock stroke + over bore), stock crank needed to be reground to clean up the spun bearing,had it the rod journals turned to 2.125 on center , next step is your choice , eagle rod part # CRS6243H3D or K1 Part# DH6243ANLB8-A summit has them both in the $600-630 range
Icon .0015 over bore (3.9185) piston, I used part #IC647C-0015($595 at cnc -motorsports it's a 14CC dome,) Cometic C5467-60 head gasket 260 for the pair,Sealed Power Ring Sets E-975K ($113) Compression ratio with the 06 heads milled .010 was 10..25
set of home ported 06 heads , 2.08X1.60 valves...I don't know what kind of Money he had in to the heads. but we went with a Comp cams 273
total of $2800 for the short block including machine work and what I charged to assemble
Cam was $405 I don't know where he got it, timing chain was dealer sourced.
that combo made [email protected]
and 465TQ at 4500rpms with a intake off of a 06 Magnum, keep in mind they had switched the truck over to use a auto front cover, truck intake is about 10 less Hp and Tq , only you can decide if that 10/10 is worth the change in cover.....you can make up the difference with a under drive pulley,and a better TB , it had a stock TB that came with the manifold.
on the Chassis dyno , with a 727 trans and a Dana 60 it's putting 420 to the wheels , with a 545 trans I'd say it would be 390-400ish which is an easy 125 over stock.
Here's the Link to Bob's ATK build.
05 GTxtreme [email protected]
, Not bad for a 392Ci NA 4400 lbs truck ,
04 SLT ...Give me some time I just bought it.