The 440/505" stroker build was done to see if taking out of the box parts could make a nice mild daily driver type pump gas street engine.
The 440 Source 4.25" stroker kit was used with the ARP2000, and light-weight crank options. The Low compression 26.7cc dish Icon pistons, and
the Trick Flow heads with the solid roller, Ti retainer spring package. The Compression was right around 10:1 (10.04 calculated with zero deck, but the piston was -0.002" below deck at TDC, so 10.01:1 calculated.)
The Crank Main and Rod clearances were around 0.0025" on the mains, and 0.0020" on the rods.
A few rod pin ends needed a light hone, but they are a close fit. Spec is 0.0005"
The balance was checked, and piston weights were from lightest at 590.4 gram to heavy at 592.3 gram, Average = 591.2
The pins were pretty close in weight from 140.9 gram to 141.3 gram, average = 141.1
Rod Pin end weights from 251.1 gram to 253.4, average = 252.0
Rod Crank ends weights from 560.7 gram to 563.8 gram, average = 562.7 This was a 3.1 gram spread, and 2.0 gram light of average, and 1.1 gram heavy than average. Because some of the heavy rod end rods also has some of the lighter pin ends, the Total rod weights were 814.2 to 815.2 gram, average 814.7
By matching the rod crank ends heavy and light per throw, the average was 1125.325 gram with 0.825 gram maximum difference.
With the rod bearing weight of 48.3 gram, and 4 gram oil the average total rotating weight per pin is 1225.925. I rounded it to 1226 grams.
By matching the heavy rod pin ends with the lighter pistons and pins, the average Piston, Pin and rod end weights was 984.2 grams, with maximum difference of 0.4875 gram.
Rings = 57.7 gram, pin locks 4.4 grams and piston/pin/rod end = 1046.3 grams
My calculated Bobweight using 50% factor = 2272.225 grams. The Balance factor used as shown on the 440 source crank card is 2271.5 grams, difference of 0.725 grams.
For the Cam used the Voodoo solid roller SKU 40230732 243/249 @ 0.050" duration, with 1.6:1 rocker arms, lift calculates to 0.616"/0.624".
Used custom length Smith Brothers pushrods, and the H&S Rockers out of the box also.
I didn't check the rocker shaft height, or valve sweep on this engine with a mild cam, so I don't know how far off the geometry may have been off from optimal, but everything worked fine, had no issues with this mild cam.
My plan was to build the engine with a Holley Street Dominator intake for low hood clearance, FiTech EFI, and a 6-quart hemi oil pan.
Then Dyno the engine, try a few intakes, and maybe run it for a year or so before making changes, like going back and making all the part the same weight and re-balance the engine, and use Gapless piston rings.
At this point (a few years ago) the build went sideways because I lost my job and was out of work for a year, so the engine was finished, and sold to a friend, but used different intake (Mopar M1) and oil pan (aftermarket to fit a C-Body), but it was a smooth running engine on pump gas and had good power.
Anyhow, I'm collecting parts for a new 440/512 (Bores didn't clean up at 0.030", so going 4.375" bores)
This time, the pistons, pins, rods will be matched for weight and then I'm having my local machine shop balance the crank.
The pistons are the same Icon 26.7cc dish, but with my old Brodix B1 B/S heads, so about 11:1 compression, and will be using a slightly bigger cam.
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