Katech "Value 427" short blocks
TECH Enthusiast
Joined: Jan 2005
Posts: 697
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From: On a car lot, shopping...
Originally Posted by Katech
Well guys and gals, I'm happy to announce that the value 427 is ready and awaiting orders. Here are plenty of specs and pictures. If you have any questions let me know. We can also upgrade these with additional parts to make them more complete, or do special orders with variations. LS7 pistons are also available at an additional cost. This price is in place while supplies last. Once we are out of stock of the Cola crankshaft this short block will get a different crankshaft and the price will change.
SPECS:
Part number: KAT-A4684A
displacement: 427ci, 7.0L
bore: 4.125
stroke: 4.000
rod length: 6.100
Compression height: 1.140
Dome volume: -12cc
Compression ratio: 11.0:1 (when using a 65cc chamber), 10.5:1 (when using 70cc chamber)
Crankshaft trigger: 24x
PRICE: $6950 plus shipping
Michigan residents add 6% sales tax
PARTS USED:
Katech sleeved LS2 cylinder case
-double vacuum impregnated
-clearanced for 4.000" stroke
-decked
Cola crankshaft
Callies Compstar H-beam rods
-ARP rod bolts
Katech forged pistons
Mahle rings
1.5mm top and second, 3mm oil
Katech piston pins
.927 x 2.27 x .155
Clevite / Federal Mogul rod and main bearings
GM Crankshaft sprocket
GM Crankshaft position sensor
GM 24x crankshaft trigger
additional option pricing:
-with Katech forged LS7 pistons, hardcoat anodized
$7230
-with custom Diamond pistons and rings for nitrous
no additional charge, additional lead time of 2-4 weeks
Originally Posted by gollum
I own a 2002 SS Camaro with M6 transmission, OEM tires, and 3.42 gearing. Is my 3.42 the perfect gear for this 427 and everyday street driving.
TECH Addict
Joined: Jul 2002
Posts: 2,261
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Jason- if I go with a 3.2xxx crank and spin to 8000 do I need a dry sump to expect some longevity i.e. do you suggest a dry sump??
I have shown the pics to quite a few people ..normal comment "Damn, good looking!".
I check them out for mental reinforcement
.
Originally Posted by ws6gluemaker
This post should be flagged as ****! Those are pictures of pure sex. I love it. Now to find a extra $10000 lying around
I check them out for mental reinforcement
. TECH Addict
Joined: Jul 2002
Posts: 2,261
Likes: 0
Originally Posted by Bink
Jason- if I go with a 3.2xxx crank and spin to 8000 do I need a dry sump to expect some longevity i.e. do you suggest a dry sump??
I have shown the pics to quite a few people ..normal comment "Damn, good looking!".
I check them out for mental reinforcement.
I have shown the pics to quite a few people ..normal comment "Damn, good looking!".
I check them out for mental reinforcement
.
Originally Posted by Bink
Jason- if I go with a 3.2xxx crank and spin to 8000 do I need a dry sump to expect some longevity i.e. do you suggest a dry sump??
I have shown the pics to quite a few people ..normal comment "Damn, good looking!".
I check them out for mental reinforcement.
I have shown the pics to quite a few people ..normal comment "Damn, good looking!".
I check them out for mental reinforcement
.Sorry. You can run it wet sump if you want. You won't sacrifice longevity, but you will sacrifice power due to windage at high rpm.
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TECH Apprentice
Joined: Oct 2006
Posts: 322
Likes: 0
From: Wichita, Ks.
Now that Jason is on the line, that block is beautiful good job. Saw the thread with cam selections, HP, TQ that you did with this block. Which cam would you suggest with a 3.73 automatic and keep street manners. Thanks.
Originally Posted by ss dave
Now that Jason is on the line, that block is beautiful good job. Saw the thread with cam selections, HP, TQ that you did with this block. Which cam would you suggest with a 3.73 automatic and keep street manners. Thanks.
TECH Addict
Joined: Jul 2002
Posts: 2,261
Likes: 0
Originally Posted by Katech
Sorry. You can run it wet sump if you want. You won't sacrifice longevity, but you will sacrifice power due to windage at high rpm.
What's your best rough guesstimate ...max loss = 20 - 25 HP @8000 rpm??
I wouldn't hesitate going for dry sump except every system I've seen I'd lose my AC compressor for the sump pump. Any alternatives??
At 16 I would have said screw the AC.....now the air is important.
Cheers,
joel
Last edited by Bink; Oct 13, 2006 at 10:20 PM.
TECH Regular
Joined: Mar 2006
Posts: 471
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From: Rolesville, NC
Originally Posted by Bink
Any alternatives??
At 16 I would have said screw the AC.....now the air is important.
Cheers,
joel
At 16 I would have said screw the AC.....now the air is important.
Cheers,
joel
Joel your just going to have to have TWO vettes. One for the street and a dedicated track car.
Tom
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Joined: Jul 2002
Posts: 2,261
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Originally Posted by AU N EGL
Joel your just going to have to have TWO vettes. One for the street and a dedicated track car.
Tom
Tom
...I'm going to go with the 3.22xx for the track.