Pros cons-built 421
12-04-2014, 12:52 AM
#1
Teching In
Thread Starter
Join Date: Feb 2014
Location: college station texas
Posts: 10
Likes: 0
Received 0 Likes
on
0 Posts
Pros cons-built 421 Okay so I decide to build a motor got my ws6 ! Didn't want anyone's opinions or anything just wanted my own project ! But since I've finished and decided to ask people I haven't been getting back the feedback I wanted so I wanted to see what you guys thought!
Engine ;
421 CID Lq9,9:1, with 244/258 on a 114 custom cam, Cnc ported stage 3 243 heads, Ferrea valves, PAC springs, tool steel retainers, mahle forged pistons, scat rods and crank, ARP 2000 bolts, cloyes timing set, melling HV oil pump, edelbrock super victor intake, elbow and FAST 92mm throttle body,Texas speed push rods, 1.72 comp gold rockers, act twin disk clutch , 80lb injectors
My plans are Togo boost and I wanted to ask what's the boosting potential , pros and cons of a 421 stroker ! Just your ideas on my overall build ! Shitty build or what
Engine ;
421 CID Lq9,9:1, with 244/258 on a 114 custom cam, Cnc ported stage 3 243 heads, Ferrea valves, PAC springs, tool steel retainers, mahle forged pistons, scat rods and crank, ARP 2000 bolts, cloyes timing set, melling HV oil pump, edelbrock super victor intake, elbow and FAST 92mm throttle body,Texas speed push rods, 1.72 comp gold rockers, act twin disk clutch , 80lb injectors
My plans are Togo boost and I wanted to ask what's the boosting potential , pros and cons of a 421 stroker ! Just your ideas on my overall build ! Shitty build or what
12-10-2014, 08:19 PM
#2
TECH Regular
iTrader: (5)
Join Date: Jun 2012
Location: Toronto
Posts: 499
Likes: 0
Received 0 Likes
on
0 Posts
Are the pistons dished? -cc numbers? 6.125 rods I'm assuming? What kind of numbers are you looking to put down and how much psi are we looking at seeing as you're boosting it?
Also, are we looking at a 4" stroke here or?
Also, are we looking at a 4" stroke here or?
12-11-2014, 12:35 PM
#3
4.125" stroke is in the LQ9 421 kits.
Recommended is the LQ9 408 which has a 4" stroke for high boost.
You would need an LS7 or LSX block to have a 427 with a 4" stroke.
BUT if you don't plan on exceeding 12 lbs of boost.... don't really matter.
Last edited by blaine123; 12-11-2014 at 12:41 PM.