Cost of doing a 4.125" AES Liner Engine

[alnukem]

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]

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]

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]

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]

YiKEs! $10k+!

I'll buy another low-mile Z first.

[alnukem]

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]

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]

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. :censored:

[Pete]

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]

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



Bet the farm on that !

[Polo-1]

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. this is YOUR motor, not outright.

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

Looks like a steal now.
Pete

Please don't remind me..... I sold my 402 for 15k outright, no exchange..
Your welcome Jim.

[alnukem]

Please don't remind me..... I sold my 402 for 15k outright, no exchange..
Your welcome Jim.

So Polo, what did you replace it with?

[Polo-1]

C6 Z06
Not a upgrade. It's too far tech wise apart to compare the two cars together. The only thing they share is the Corvette name.

[FU]

C6 ZO6 ain't a bad choice ! My cammed WCCH ZO6 ran like a beast, it'll give the 440 a real good run. It did lack , personality.

[Polo-1]

Yes, not hard to hit 550-600rwhp in the LS7.
Just can not compare the two, apples to oranges.