C4VetteLS1

Ive been pricing doing a budget 422/427 stroker and i think i can pull off a complete shortblock for $2000 bucks. (and sell my shortblock for at least half of that)

Am I missing anything here?

Offset grind stock crank $300 (guy just made 725 rhwp on a crank done like this)

H-beam Rods /w ARP Bolts $450 (750 total)

Forged Pistons & Rings $550 (1300 total)

6.0L Block $200 (1500 total)

Machine work & Balance $400 (1900)
machine work is cheap in this town

bearings/gaskets/misc $100-250 ($2000-2150 total for a 422 FORGED shortblock.


Any one have suggestions to improve combo?

383LQ4SS

iTrader: (33)

How are you planning on attaining 422/427 cubes? I have that motor and it came to 383 wth the stock crank at 3.70. Yould could stretch it a bit more but not much.

C4VetteLS1

Wont the 6.0L block extra bore along give me in the area of 380 cubes. Plus the extra stroke would give me more correct?

All bore motors alone are 388 right???????? plus the stroke should put me over 400 i thought.

383LQ4SS

iTrader: (33)

Not always...do a search for some engine calculators and plug in the bore and stroke to get CI. The most you can safely do an iron block is 4.06 although I do know of one person who did a 4.08. Not sure how that turned out. On the crank..ARE went 3.70 on mine but again I know of a few that went a little farther.
Without actually doing the math I believ an iron block bored to 4.06 with stock crank is about 370 ci. Then add an offset ground stock crank at 3.70 and I beieve it just a hair over 383 ci. But anyways...do a search for those calculators and check em out.

Terry Burger

iTrader: (4)

All bore motors are 388ci with a 4.125" bore. You'd be at 4.08 _MAX_ on that iron block, probably safer to go 4.06, which is 375ci. Then add another .020 stroke (which is pushing it) and I think you'd be close to 385ci.

93Polo

iTrader: (5)

TSP has offset ground a stock crank to a 3.82" stroke. That combine with a sleeved 4.125 aluminum block will get a 408.

ShiznityZ28

iTrader: (11)

very interesting but 2000 sounds low.

DONAIMIAN

iTrader: (18)

FYI
bore X bore X stroke X 7854 X number of cylenders

Trevor @ Texas Speed & Perf.

iTrader: (3)

Our '99 C5 put down 729.9 RWHP with our 396 off-set stroker and dual-stage nitrous setup. The 4.060" bore combined with the 3.822" stroke nets 396 cid. A 4.125" bore with 3.822" stroke will net 408.6 cid (call it a 409 ). Expect to see a 409 setup in the next few months.

We've decided to start selling the 396 cid off-set stroker rotating assembly, so give us a call or shoot us an e-mail if you'd like pricing. Also, use extreme caution on choosing your machinist for off-set grinding the crankshaft. We chewed up a few cranks before we found a competent machinist that would provide us with a quality product.

Thanks!

Trevor

robertbartsch

You can go to CARMATH.com to measure the cubic inches of a particular setup.

rodent

iTrader: (1)

Just a warning:

I got a 99 6.0 block and had it sonic tested. Walls were too thin to go .060 over.

Thought it was the block so I bought a brand new block from GM and guess what... walls are too thin to go .060 over.

Some 6.0 blocks can, some can't.

strokedls1

iTrader: (1)

Your math is way off. $550 is for pistons. Add another $150 for rings. There are tons of parts that you do not include like head gaskets, all around gaskets, enlarging the head chamber to bore size, pulleys, new bolts, offset grind mahine cost. Your machine work math is not even in the ball park. I have around $1400 in just machine and balance work. The blocks are more like $500-$550. The bill adds up real fast is what I am trying to get accross. The 4.060 bore with a 3.82 stroke gives you a 396ci.

Black Sunshine/ 00SS

iTrader: (1)

http://www.aera.org/tech/cube_calc.html

C4VetteLS1

Actually my cost on pistons/rings is about $450, but im a dealer. I sell the pistons/rings for $550 for most applications.

Head gaskets $30.

rest of the gaskets $50-75 TOPS, if i dont have extra ones already laying around.

Pullies?????? umm i dont need pullies to go to a stroker/bore

Ive had 100 motors machined here. Machine work with balance = $350-500 tops here.

I can buy 6.0 blocks all day long for $200 bucks.


Geez i dont know about you guys, but i built my complete all forged LS1 for about $3000 in it. and it makes 420 rwhp. You guys gotta stop spending so much money!

theblur98ss

iTrader: (71)

You're forgetting that a stroker crank is $2000 by itself. I agree that you can build good 400+hp motors for alot less money and strokers aren't cheap or good hp to dollar ratio but once you go so far the power is tougher to find and the dollar doesn't go as far. Just trying building a motor with a stroker crank and resleeved aluminum block. There's $4500.

C4VetteLS1

Well I will end up with a 396 cu inch complete motor for the price people pay for just a 422 stroker crank $2000.

The offset ground stock crank costs $300 in machine work.
And a 6.0L iron block is much stronger than the aluminum block for huge nitrous useage anyways.

So actually for $2000 is a hell of a deal on a 396 cubic inch stroker

Pro Stock John

iTrader: (34)

Hmmm you posts are a blend of asking questions and then snappy comebacks, I sure hope you can snap back less, I sure admire your project but we try not to lecture folks on what to do especially when your original post is way off on actual motor size...

My old 422ci by ARE was 4.060 bore and 4.075 stroke.

TSP and Andy's Auto have both been discussign offset ground stock cranks check with them on their progress... Good luck!

ibjamin

iTrader: (6)

Also, the pistons you will need will be custom with the extra stroke so they aren't off the shelf Wiseco ones.

Go ahead and do it. Keep track of EVERYTHING you spend and see if it comes in under $2K.

George E.

ls1290

iTrader: (20)

I have a 4.00" crank with 6.125" rods. If I offset ground the crank to 4.075", could I reuse the rods with different bearings or would I need to get new rods?

Tom@SpeedInc

iTrader: (5)

This guys just plain thrifty, hope it work out for him.