Katech "Value 427" short blocks
11-05-2007, 11:40 PM
#161
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Oops. Sorry I missed it.
LS7 heads, LS7 intake, Katech Torquer LS7 camshaft
L76 will work fine but I'm not sure if you'll get your 550rwhp with the Torquer cam. We've made 604bhp on a L76/L92 combo with a more aggressive cam. We plan on doing more testing with the new Torquer L92 cam.
You can stick with your C5's MAF. Its not going to make much of a difference.
LS7 heads, LS7 intake, Katech Torquer LS7 camshaft
L76 will work fine but I'm not sure if you'll get your 550rwhp with the Torquer cam. We've made 604bhp on a L76/L92 combo with a more aggressive cam. We plan on doing more testing with the new Torquer L92 cam.
You can stick with your C5's MAF. Its not going to make much of a difference.
-Joe
11-06-2007, 03:34 PM
#163
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Damn you, Bink.
I always wanted the gmpp ls6 heads and now you gotta link these. 
Seriously - ya gotta love all the cool ls7 parts coming out. Great numbers on them...
Dan
11-06-2007, 03:41 PM
#164
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Jason/Katech....
Can you recommend any individual throttle body setups for this engine? Are we stuck with using the C5-R heads and intake setup if we want something approaching a turnkey solution? Personally, I'd prefer to go with LS7 heads and the Harrop, but there seems to be very few people who've been successful running the Harrop on the ls1/ls6...
Thanks,
Dan
Can you recommend any individual throttle body setups for this engine? Are we stuck with using the C5-R heads and intake setup if we want something approaching a turnkey solution? Personally, I'd prefer to go with LS7 heads and the Harrop, but there seems to be very few people who've been successful running the Harrop on the ls1/ls6...
Thanks,
Dan
11-06-2007, 03:52 PM
#165
Jason/Katech....
Can you recommend any individual throttle body setups for this engine? Are we stuck with using the C5-R heads and intake setup if we want something approaching a turnkey solution? Personally, I'd prefer to go with LS7 heads and the Harrop, but there seems to be very few people who've been successful running the Harrop on the ls1/ls6...
Thanks,
Dan
Can you recommend any individual throttle body setups for this engine? Are we stuck with using the C5-R heads and intake setup if we want something approaching a turnkey solution? Personally, I'd prefer to go with LS7 heads and the Harrop, but there seems to be very few people who've been successful running the Harrop on the ls1/ls6...
Thanks,
Dan
11-06-2007, 09:20 PM
#166
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thanks
11-06-2007, 09:23 PM
#167
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Oops. Sorry I missed it.
LS7 heads, LS7 intake, Katech Torquer LS7 camshaft
L76 will work fine but I'm not sure if you'll get your 550rwhp with the Torquer cam. We've made 604bhp on a L76/L92 combo with a more aggressive cam. We plan on doing more testing with the new Torquer L92 cam.
You can stick with your C5's MAF. Its not going to make much of a difference.
LS7 heads, LS7 intake, Katech Torquer LS7 camshaft
L76 will work fine but I'm not sure if you'll get your 550rwhp with the Torquer cam. We've made 604bhp on a L76/L92 combo with a more aggressive cam. We plan on doing more testing with the new Torquer L92 cam.
You can stick with your C5's MAF. Its not going to make much of a difference.
-Joe
11-11-2007, 02:21 AM
#169
Staging Lane
Join Date: May 2007
Location: San Leon TX
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Oops. Sorry I missed it.
LS7 heads, LS7 intake, Katech Torquer LS7 camshaft
L76 will work fine but I'm not sure if you'll get your 550rwhp with the Torquer cam. We've made 604bhp on a L76/L92 combo with a more aggressive cam. We plan on doing more testing with the new Torquer L92 cam.
You can stick with your C5's MAF. Its not going to make much of a difference.
LS7 heads, LS7 intake, Katech Torquer LS7 camshaft
L76 will work fine but I'm not sure if you'll get your 550rwhp with the Torquer cam. We've made 604bhp on a L76/L92 combo with a more aggressive cam. We plan on doing more testing with the new Torquer L92 cam.
You can stick with your C5's MAF. Its not going to make much of a difference.
-Joe
11-11-2007, 06:11 AM
#170
Jason, Do you main stud this Value 427 Short Block or use the factory torque-to-yield fastener design? If you use the factory TTY fastener's, how much power can they take before giving up? Have you had any type of failure using these fastener's?
D.J.
D.J.
11-11-2007, 10:41 AM
#171
This is a Value 427 w/L92 top end and GM Stage 3 cam.
http://www.youtube.com/watch?v=24eT7RMfLlM
We use GM main studs/bolts unless the customer requests to upgrade to ARP. We've never failed a main stud.
08-12-2008, 09:36 AM
#176
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
bump for a great deal.
