Cost of doing a 4.125" AES Liner Engine - ZR-1 Net Registry Forums

alnukem · 11-05-2013

Just to let you guys know, I was bored a few weeks ago & called AES. The cost to do a 4.125" sleeve shortblock using a stock crank offset ground to 3.75", AES supplying Pistons, Compstar Rods, new rod bearings assembled is $10500. This will give a displacement of 401. AES will plate the original supplied main bearings. Just thought I'd share in case anybody was wondering how much a complete shortblock would cost.

alnukem · 11-05-2013

I guess I should have also added that if the better built 350's are getting 450 RWHP, which is 1.28 rwhp per cube, then 401 cubes x 1.28 rwhp = 515 rwhp & a very healthy boost in torque!

Paul Workman · 11-05-2013

Quote:

Originally Posted by alnukem

I guess I should have also added that if the better built 350's are getting 450 RWHP, which is 1.28 rwhp per cube, then 401 cubes x 1.28 rwhp = 515 rwhp & a very healthy boost in torque!

To go with the bottom end, the top end porting, including heads and maybe valves will push it another $5-6k, unless it is a DIY project. A full blown 415, 427, 441 stroker passes $20k like it was up on jacks, especially if it is all farmed out. And, add the drive-line hardening like dual clutch and 31 spline axle spindles (which you'll need sooner or later) and maybe half shaft upgrades...and my "500 package" 350 suddenly doesn't look so bad

But...you only live once!

XfireZ51 · 11-05-2013

I think I would consider the AES closed block once you go 427 or beyond. There are plenty of displacement configurations below that with great power. A stock block LT-5 puts you into the 11s with DRs and a good driver.

Schrade · 11-05-2013

YiKEs! $10k+!

I'll buy another low-mile Z first.

alnukem · 11-05-2013

I would think if I was considering a 415, 4.125" bore & 3.875" stroke, I would probably go this way.....big bore, short stroke, unshrouds the valves. Theoretically, it would be better than the 4.125" stroke.

Hog · 11-05-2013

Really makes it easier to a forced induction setup. You can get get fully forged 418 GEN 3/4 longblocks for under $4000 INCLUDING a brand new forged crank.

I does take dedication to pay for an extra displacement LT5.

So far as shrouding of the valves, is that really a concern on the LT5?

tpepmeie · 11-05-2013

Quote:

Originally Posted by Paul Workman

A full blown 415, 427, 441 stroker passes $20k like it was up on jacks, especially if it is all farmed out.

I wish. I have that in the induction system/camshafts.

Pete · 11-06-2013

This is cheap.

Heck just a few years back a 415ci was $34k did not include cams or valves and if you wanted droped/siamised plenum well then your were close to $50k.

So a turn key 401ci for around $15k is a bargain.

Looks like a steal now.
Pete

FU · 11-06-2013

Quote:

Originally Posted by Pete

So a turn key 401ci for around $15k is a bargain.

Bet the farm on that !

11-05-2013	#1
alnukem Join Date: Jan 2010 Location: Freedom Pa Posts: 275	Cost of doing a 4.125" AES Liner Engine Just to let you guys know, I was bored a few weeks ago & called AES. The cost to do a 4.125" sleeve shortblock using a stock crank offset ground to 3.75", AES supplying Pistons, Compstar Rods, new rod bearings assembled is $10500. This will give a displacement of 401. AES will plate the original supplied main bearings. Just thought I'd share in case anybody was wondering how much a complete shortblock would cost.

11-05-2013	#2
alnukem Join Date: Jan 2010 Location: Freedom Pa Posts: 275	Re: Cost of doing a 4.125" AES Liner Engine I guess I should have also added that if the better built 350's are getting 450 RWHP, which is 1.28 rwhp per cube, then 401 cubes x 1.28 rwhp = 515 rwhp & a very healthy boost in torque!

11-05-2013	#4
XfireZ51 Join Date: May 2007 Location: Chicagoland, IL Posts: 9,661	Re: Cost of doing a 4.125" AES Liner Engine I think I would consider the AES closed block once you go 427 or beyond. There are plenty of displacement configurations below that with great power. A stock block LT-5 puts you into the 11s with DRs and a good driver. __________________ [SIGPIC][/SIGPIC]Former Membership Chairman Former ZR-1 Registry - BOD 1972 Corvette 4speed base Coupe SOLD long time ago 1984 Corvette Z-51/4+3 SOLD 1992 Corvette ZR-1 Aqua/Gray #474 SOLD 1992 Corvette ZR-1 Black Rose/Cognac #458 2014 Honda VFR Interceptor DX

11-05-2013	#5
Schrade Join Date: Dec 2012 Location: NC Posts: 1,786	Re: Cost of doing a 4.125" AES Liner Engine YiKEs! $10k+! I'll buy another low-mile Z first. __________________ I'm getting my snappics / threads removed blindly as fast as I can, to get in compliance with copyright / license TOS on the boards here (lots of FSM pages and other copyright / license violations on my part; sorry guys). And thanks to all the guys who didn't whine when I posted those FSM copyrighted / licensed stuff in my threads... ( :thumbsup: [b]and to think I complied with a mod's request to delete a pic of him in a Challenge Car in NCM Museum, so he wouldn't get in hot water)[/b] Thanks to several guys here for sending parts FREE; BearlyFlying, WeGone, Geezer, GoldCylon, and more there, TonyD, mike100, fletchusmc... 1990 #2794; 4L60e Stage V by RPM Transmission, TCI Dedicated TCM, OBX Stainless, Power Effects 3" [IMG]https://lh5.googleusercontent.com/-GHpfzty7DVU/UQn-0Ru2xAI/AAAAAAAAA14/08mz1p4QLD4/s445/Screenshot-5.png[/IMG]

11-05-2013	#6
alnukem Join Date: Jan 2010 Location: Freedom Pa Posts: 275	Re: Cost of doing a 4.125" AES Liner Engine I would think if I was considering a 415, 4.125" bore & 3.875" stroke, I would probably go this way.....big bore, short stroke, unshrouds the valves. Theoretically, it would be better than the 4.125" stroke.

11-05-2013	#7
Hog Join Date: Jul 2010 Location: Woodstock, Ontario, Canada Posts: 1,275	Re: Cost of doing a 4.125" AES Liner Engine Really makes it easier to a forced induction setup. You can get get fully forged 418 GEN 3/4 longblocks for under $4000 INCLUDING a brand new forged crank. I does take dedication to pay for an extra displacement LT5. So far as shrouding of the valves, is that really a concern on the LT5? __________________ peace Paul ZR-1 Net Registry Member #1494

11-06-2013	#9
Pete Join Date: Dec 2003 Location: Chicagoland,IL Posts: 2,680	Re: Cost of doing a 4.125" AES Liner Engine This is cheap. Heck just a few years back a 415ci was $34k did not include cams or valves and if you wanted droped/siamised plenum well then your were close to $50k. So a turn key 401ci for around $15k is a bargain. Looks like a steal now. Pete __________________ '91 #1635 PoloGreen 350 LT5 11.09 @ 129.27 11.04 @ 128.86 474RWHP 400RWTQ http://www.youtube.com/watch?v=SFNFOhGGlR4 http://www.youtube.com/watch?v=ZlRIOMwaDYY https://sites.google.com/site/peteszr1garage