Sb 420
Thread Starter
Senior Member
Joined: May 2003
Posts: 663
Likes: 1
From: Runnin' from the Reaper
Car: 91 B4C/91 RS 305
Engine: L98 and L03
Transmission: 2xTH700R4
Axle/Gears: 3.23 LSD/2.73 Open
Sb 420
Has anybody put one in their car yet? I saw somebody had plans to do it and saw the short block for sale in a magazine.
Supreme Member
Joined: Jul 1999
Posts: 18,457
Likes: 16
From: Loveland, OH, US
Car: 4
Engine: 6
Transmission: 5
It's a 400 with a 3.875" stroke crank. Nothing particularly radical. Would bolt right in like any other small block, except that you'd have to be real careful about how it was balanced, and use the right crank damper and flywheel / flex plate accordingly.
Personally I wouldn't bother with a motor that small; If I was going to spend the money to stroke (and I probably will do it to mine), I'd put in a 4" stroke crank, which gives a 427 (or 434 with the usual .030" overbore). Cost is about the same; why leave cubic inches on the table?
Personally I wouldn't bother with a motor that small; If I was going to spend the money to stroke (and I probably will do it to mine), I'd put in a 4" stroke crank, which gives a 427 (or 434 with the usual .030" overbore). Cost is about the same; why leave cubic inches on the table?
Member
Joined: Sep 2002
Posts: 395
Likes: 0
From: Willmar, MN
Car: 91 Maro & 97 Ram & 05 Roadstar
Engine: LS1
Transmission: T56
Axle/Gears: 2.73
Cost is about the same; why leave cubic inches on the table?
But it's your car and if you want the uniquiness of having a 420 CID go for it.
Thread
Thread Starter
Forum
Replies
Last Post
hectre13
Engine/Drivetrain/Suspension Parts for Sale
6
Sep 8, 2015 03:38 PM