Hermon, Maine

Complete Engines

Thayer's Automotive Competitive Engines...taking mild to wild one engine at a time!

GM 603 crate engine

Completely rebuilt 603. New style pistons, 6 1/2 oil pan, small balancer

97519

GM 604 crate engine completely rebuilt with updates. $9500 dyno sheets available

Has early forged crank
Newer p/m rods
Forged mahle pistons
Bowtie heads
Older block
6” balancer
6 1/2 moroso oil pan
Alliance sealed

87507
87507

359 SMALL BLOCK CHEVY STREET ENGINE

Sold

4 BOLT MAIN BLOCK .060 OVER
SPEEDPRO FORGED PISTONS
NODULAR CRANKSHAFT
COMP HYDRAULIC CAM GM LIFTERS
VORTEC HEADS W/STAINLESS STEEL VALVES
1.6 ROLLER ROCKERS
STREET STRIP OIL PAN
390 HP

81239
81239
81239

350 Block 4 Bolt Main Block, Race Ready

406 SBC Over 650 HP, Race Ready

602 GM Crate Engine Completely Rebuilt

355 Street Engine Roller Cam, Pro Heads