AMC V8 Engine Repair and Modifications - Need some help on 401 stroker

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Need some help on 401 stroker

Printed From: TheAMCForum.com
Category: The Garage
Forum Name: AMC V8 Engine Repair and Modifications
Forum Description: AMC-made V8 engine mechanical, ignition and fuel from basic repair to high-perf modifications
URL: https://theamcforum.com/forum/forum_posts.asp?TID=108453
Printed Date: Mar/04/2021 at 6:04pm
Software Version: Web Wiz Forums 12.03 - http://www.webwizforums.com

Topic: Need some help on 401 stroker

Posted By: fastjeep
Subject: Need some help on 401 stroker
Date Posted: Nov/30/2020 at 9:29pm

A little back story on this engine. Bought this engine when I a friend switched to chevy. This motor was apart and included with everything I got. I was told that it was a 417 engine it has alum rods and due to oil pick up breaking it ruined 2 rods. I now want use this engine in my J10 and need some guidence on what I need to swap to steel rods. I know you guys have more knowledge about what is needed.

Here is what I have:

Crank - Standard mains at 2.749

.020 under chevy rods at 2.079

Rods - Current rods Childs and Albert alum rods at 350 + 150 = rod length 5.850

Wrist pins are 1.000

Big end width is 0.942

Pistons - My best measured compression height is 1.495 ( wrist pin top to piston top +half of wrist pin )

Wrist pins are 1.000 so that is 401 pin size

Block - Bore is 4.177 so that is .010 over stock 401 at 4.165

So my question are is it to find a rod I need chevy 5.850 length with 1.000 pin or maybe get a piston made to go the bore I and have with standard .927 pin. I will set up crank in block and test fit a rod and piston to see where piston is at deck or how far below deck. I do not know if block was decked or what stroke of crank is. I have had this engine since 1984 so it was built long before the on what is being done today.

Replies:

Posted By: garland performce
Date Posted: Dec/02/2020 at 6:12pm

Give me a call at the Shop Monday - Friday 730 to 400

816-547-5695

John Garland owner of Garland Performance