I already have most of the short block parts, 4-bolt block, 3.75" crank, forged SRP 4.040 pistons, Scat I-beams, Canton RR pan, ARP main studs, just need to get custom cam, new timing set, balancer, and rings/bearings.

So what would be an estimate for boring (.040 over), line honing, clearancing, and assembling the bottom end (short block) assuming QUALITY bearings, machining, and assembly? I just want a ballpark of how much I should expect for this.

It will be a 385 12.3-4 SCR/9.2 DCR E85 LE3 headed motor, estimating 520 HP (crank) for street/autox/occasional road course use.

 

$35.00 Jet Clean Block
$45.00 Boil Block
$51.48 Cam bearings (installed)
$39.83 Freeze plugs (installed)
$120.00 Deck Block
$175.00 Overbore w/plate

$297.00 4-bolt main cap
$500.00 4-bolt main machining / installation
$91.80 Main Studs

$74.99 Main Bearings (installed)
$74.96 Rod Bearings (installed)

$300.00 Shortblock assembly

$32.00 Piston assembly (8)
$150.00 Balance Rotating Assembly

$210.00 Canton Oil Pan
$45.00 Oil Pickup

 

So I'm looking at approximately $1144.00 for machining and assembly for my shortblock? That's not too bad. Since I also already have the LE3 heads, I would just need to get my intake ported, and lifters, then I could bolt the heads/intake on and seal the motor up. Only leaving me the valvetrain left to measure and install. If this price is correct ballpark, then maybe I can get it put together soon.

 

Those prices are direct from my 383 build.


LE3 heads and a good custom 23x/24x cam will make that thing FLY
Remember to degree the cam, measure the pushrods, use 36 or 42# injectors and have it properly tuned when you are done.

 

cost me about $450 for hot tank, freeze plugs, decking, bore, and hone. did the clearancing myself along with assembly so can't vouch beyond that