The 1947 - Present Chevrolet & GMC Truck Message Board Network







Register or Log In To remove these advertisements.

Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > General Truck Forums > Engine & Drivetrain > LSx Swaps

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 03-03-2011, 10:37 AM   #1
softballnrd27
Always a work in progress
 
softballnrd27's Avatar
 
Join Date: Jun 2007
Location: Harker Heights, TX
Posts: 1,599
427 lsx

I have a hard time with the search function on some websites out here in the sandbox and just needed to know if someone can provide me some info on building a 427 LSX based motor. It is a dream motor that I will start collecting parts for once I get my 6.0 swapped into my truck. I really need the best bore/stroke combination. I am looking at 2 different routes as far as what I would consider "done" in the engine compartment either a 427(I would just like to say I have a 427 under the hood) or a turbo'd 390" LSX based motor.
__________________
USMC Retired
Never trust a man who can't laugh at his own fart!
2010 Silverado Crew Cab
73 SWB 5.3/4l80e
Build Thread:
http://67-72chevytrucks.com/vboard/s...d.php?t=695168
softballnrd27 is offline   Reply With Quote
Old 03-03-2011, 12:45 PM   #2
swb85
On a budget like Fred Sanford
 
swb85's Avatar
 
Join Date: Oct 2005
Location: Topeka, KS
Posts: 2,031
Re: 427 lsx

I'd want a 4.125 bore and 4" stroke to get your 427ci. You need an LS7 block or aftermarket. You can also sleeve an aluminum factory block, but it's pricey. People are doing 427ci LS3 strokers with 4.07" bore and 4.125" stroke, but that makes for a really short piston IMO. If you're gonna spend the money, go for the biggest bore you can afford so you can take advantage of todays cylinder head technology.
__________________
'85 Silverado swb: 383 stroker, 10.5:1, vortec heads, 232/238 roller cam, RPM air gap, performer 750 carb, stainless longtubes, 3" duals/super 44's, T56/4.11 383ci build / exterior refresh thread
'98 Camaro z28: 370ci twin turbo 370ci build
'01 Tahoe LT 4x4: 5.3, longtubes/ory, magnaflow duals, custom tune....wife's DD

Last edited by swb85; 03-03-2011 at 12:45 PM.
swb85 is offline   Reply With Quote
Old 03-04-2011, 12:48 AM   #3
softballnrd27
Always a work in progress
 
softballnrd27's Avatar
 
Join Date: Jun 2007
Location: Harker Heights, TX
Posts: 1,599
Re: 427 lsx

Thanks alot SWB85 once again you show me why I like this board compared to others! How is that 383 treating you?
__________________
USMC Retired
Never trust a man who can't laugh at his own fart!
2010 Silverado Crew Cab
73 SWB 5.3/4l80e
Build Thread:
http://67-72chevytrucks.com/vboard/s...d.php?t=695168
softballnrd27 is offline   Reply With Quote
Old 03-04-2011, 09:44 AM   #4
swb85
On a budget like Fred Sanford
 
swb85's Avatar
 
Join Date: Oct 2005
Location: Topeka, KS
Posts: 2,031
Re: 427 lsx

Still smokin the tires until I hit 3rd gear.
__________________
'85 Silverado swb: 383 stroker, 10.5:1, vortec heads, 232/238 roller cam, RPM air gap, performer 750 carb, stainless longtubes, 3" duals/super 44's, T56/4.11 383ci build / exterior refresh thread
'98 Camaro z28: 370ci twin turbo 370ci build
'01 Tahoe LT 4x4: 5.3, longtubes/ory, magnaflow duals, custom tune....wife's DD
swb85 is offline   Reply With Quote
Old 03-05-2011, 12:34 AM   #5
softballnrd27
Always a work in progress
 
softballnrd27's Avatar
 
Join Date: Jun 2007
Location: Harker Heights, TX
Posts: 1,599
Re: 427 lsx

sweet!! I still love to watch your in cab driving video, youknow the one where you show off your sweet legs!!!
__________________
USMC Retired
Never trust a man who can't laugh at his own fart!
2010 Silverado Crew Cab
73 SWB 5.3/4l80e
Build Thread:
http://67-72chevytrucks.com/vboard/s...d.php?t=695168
softballnrd27 is offline   Reply With Quote
Old 03-06-2011, 05:51 PM   #6
swb85
On a budget like Fred Sanford
 
swb85's Avatar
 
Join Date: Oct 2005
Location: Topeka, KS
Posts: 2,031
Re: 427 lsx

I do get lots of leg compliments.....thanks
Posted via Mobile Device
__________________
'85 Silverado swb: 383 stroker, 10.5:1, vortec heads, 232/238 roller cam, RPM air gap, performer 750 carb, stainless longtubes, 3" duals/super 44's, T56/4.11 383ci build / exterior refresh thread
'98 Camaro z28: 370ci twin turbo 370ci build
'01 Tahoe LT 4x4: 5.3, longtubes/ory, magnaflow duals, custom tune....wife's DD
swb85 is offline   Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 01:16 PM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright 1997-2022 67-72chevytrucks.com