Our 347ci Dart Short Block is designed for typical street car n/a buildups with maybe a little nitrous making under 700hp. This short block is balanced to 28oz external. This setup relies on a professionally prepped Dart Shp block with strong scat I beam rods with 7/16 arp2000 cap screws and Racetec's autotec 4032 flat top pistons for ONLY trick flow twisted wedge or 11r heads. This is the premium 4 bolt iron block available for 302 based motors and can handle upwards of 1200hp. Rings are gapped for n/a with small nitrous up to 150hp at most. A full "blue print" build sheet with all clearances is included. The block has been fully machined after receipt from dart including: bore/hone with torque plates, square deck to the right rms for MLS gaskets, and a full deburr is done on the whole block to take away any sharp corners as well as at the top and the bottom of the cylinders. Finally all plugs are installed with sealant and a new oil filter adapter and Mahle rear main seal is installed.
Long Blocks: There is a $500 charge to assemble anything else you buy from us to your short block. Please ask if you are interested in anything you don't see! Block: 4.125" bore TREperformance race prepped Dart SHP 4 bolt main 302 block
Crank: SCAT cast steel 4340 3.25" stroke part# 9-302-3250-5400-2123 (balanced with the rest of the assembly to 28oz external)
Rods: SCAT 4340 Forged I beam 5.4" w/arp2000 capscrews part# 2-ICR5400-7/16A
Bearings: Clevite H series race rod and main bearings part# ms590h and part# cb634hn.
Pistons: Racetec's Autotec pistons, flat top -3.8cc (~10.6:1 with .040 thick gasket and 61cc heads), for TFS Twisted Wedge/Track Heat and 11R heads
Rings: Mahle plasma moly ring set file fit
PLEASE ASK ABOUT LONG BLOCK OPTIONS!
