400+ CI Iron block users info please
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Joined: Nov 2001
Posts: 380
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From: Southern California
400+ CI Iron block users info please Im looking into building a big inch motor and would like to see what your combo's are. Im assuming the 6.0L block, What CI are you, what bore are you using, stroke, rod length, pistons, etc. Are we able to use the old SBC pistons since the bore could be 4.030? If you had to do it over again, would you use the iron block? This will be a daily driver with a good sized amount of nitrous. (200HP or so eventually) I know ARE does a lot of these, but I would like all YOUR opinions. Thanks.
Re: 400+ CI Iron block users info please ARE 422ci here...
4.060 bore (4.030-4.040 more common)
4.075 stroke (offset ground used Lunati 4.000)
6.200 Lunati Pro Mod Rods
Ross Pistons
11.25:1 compression, neg deck height for pistons at TDC
450rwhp unlocked thru 9", 502rwhtq
4.060 bore (4.030-4.040 more common)
4.075 stroke (offset ground used Lunati 4.000)
6.200 Lunati Pro Mod Rods
Ross Pistons
11.25:1 compression, neg deck height for pistons at TDC
450rwhp unlocked thru 9", 502rwhtq
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Joined: Nov 2001
Posts: 3,048
Likes: 12
From: Raleigh, NC
Re: 400+ CI Iron block users info please Mine is being built, and I don't know all the details yet, but here's a partial:
GWP 427 CID
4.060 bore
4.125 stroke
9.x:1 Compression (low to accomodate a SC)
Shooting for mid-400's HP NA, 600+ blown
GWP 427 CID
4.060 bore
4.125 stroke
9.x:1 Compression (low to accomodate a SC)
Shooting for mid-400's HP NA, 600+ blown
Re: 400+ CI Iron block users info please With spray, I think the iron block is the way to go for a street driven vehicle. My 409 is as follows...
I'm going with:
4.0" stroke
4.035" bore
6.125" rod
Thanks,
Shane
I'm going with:
4.0" stroke
4.035" bore
6.125" rod
Thanks,
Shane
Re: 400+ CI Iron block users info please Mine is being put togther now. The parts are
Lunati 4.00 Crank
Eagle 3-D 6.135 rods
Ross Dished Turbo Pistons
Total Seal Plasmamoly rings
Main Studs.
Stage 3 6.0 Heads from Total Engine Airflow
Modified LS-6 intake
Custom Solid roller
Turbo Tech kit with a T-62
O-ringed heads with Head studs
The power output is hopefully alot. The ET,s im looking for is 9' at around 140. With some suspension changes and 400 Turbo with a brake and a 9" and the Tubelar K, A-arms and Afco's. As long as it hooks and runs good what im lookin for.
Lunati 4.00 Crank
Eagle 3-D 6.135 rods
Ross Dished Turbo Pistons
Total Seal Plasmamoly rings
Main Studs.
Stage 3 6.0 Heads from Total Engine Airflow
Modified LS-6 intake
Custom Solid roller
Turbo Tech kit with a T-62
O-ringed heads with Head studs
The power output is hopefully alot. The ET,s im looking for is 9' at around 140. With some suspension changes and 400 Turbo with a brake and a 9" and the Tubelar K, A-arms and Afco's. As long as it hooks and runs good what im lookin for.
Re: 400+ CI Iron block users info please Blackbird, I have parts of the system now i sold some stuff off a while ago. I have a Walbo 255 pump had 36 lb injuctors, and some other piddly stuff. Hope now to get a racetronix or aeromotive fuelsystem. Im getting the Turbo work done from Turbonetics or Precision Turbo and enging. Total Engine Airflow is building my motor for his project LS-1. Im going to try to get some aeromotive fuel rails to work on the intake. If all goes well it should be up and running soon. I had to get rid of the nitrous cause my car backfired on the dyno and cought the underneah of my car on fire and i dont want that to happen again. Justin
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I did a 410 with the 6.0 block bored like 4.040
11.85:1 compression. something like a 242/246 612/618 114 LSA
Ls6 intake and all the boltons.
I am going to run a direct port NX system. Motor is done and going in next week.
I have 30000 in reciepts on this car with all the syspension done, roll cage motor turbo 400 w/ brake, converter, tires wheels exhaust bolt on's fuel system, injectors, labor, etcetcetcectectectetcetcectect.................... ..
If you keep in touch I will have some results in a few weeks.
11.85:1 compression. something like a 242/246 612/618 114 LSA
Ls6 intake and all the boltons.
I am going to run a direct port NX system. Motor is done and going in next week.
I have 30000 in reciepts on this car with all the syspension done, roll cage motor turbo 400 w/ brake, converter, tires wheels exhaust bolt on's fuel system, injectors, labor, etcetcetcectectectetcetcectect.................... ..
If you keep in touch I will have some results in a few weeks.
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Joined: Mar 2003
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From: Dallas
I would prolly do the standard 408 if I had an iron block unless I was stuck on getting the magical 427 or something.
The extra 10-20 cubic inches isnt really worth boring out the block that much IMO.
The extra 10-20 cubic inches isnt really worth boring out the block that much IMO.
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Joined: Dec 2003
Posts: 441
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Originally Posted by JZ'sTA
I did a 410 with the 6.0 block bored like 4.040
11.85:1 compression. something like a 242/246 612/618 114 LSA
If you keep in touch I will have some results in a few weeks.
11.85:1 compression. something like a 242/246 612/618 114 LSA
If you keep in touch I will have some results in a few weeks.
what do you expect to make on motor?
my set up is
410 iron block 10.9.1 compression
4.040 bore
4.000 Lunati crank
6.125 Lunati rods
-6cc custom Diamond pistons
stage 3 LS6 heads
248/252 .610/.614 113lsa
still unsure on the exact specs on the cam
Last edited by SStroked 410; Feb 4, 2004 at 05:24 PM.
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Joined: Dec 2003
Posts: 441
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Originally Posted by taqwache
dam this post started back in april of 2002 almost 2 years ago when most people were still building there big motors. a blast from the past.
Launching!
Joined: Jan 2002
Posts: 252
Likes: 0
From: ONTARIO/CANADA
On all the 6.0 blocks we do the first thing is to sonic test! We sonic test every block that will see any kind of HP or be bored over 4.030. I remember in Johns case (4.060) he still had close if not over .100" after the over bore. We tested a few blocks that had less in some areas at the factorey bore (4.00")!!
Test the block, go for max. wall thickness (just clean it up .005-.010)if there will be alot of N20. The engine doesn't care If the N2O goes in a hole .030" smaller.
If you have it in the budget I would look at the aluminum re-sleeve for the weight reduction in the nose. We have been as if not more reliable at the high HP levels with the re-sleeve over the iron block (on the testing we have done). The 422 in our Camero (C5-R heads) has close to 70 passes in the mid to hight 8 sec. range with a re-sleeve @ 4.100 bore. The combo is 4.100 bore/ 4.00 stroke/ 6.125 rod and a dish piston. Not trying to push the aluminum block but weight in nose may be something to consider?
Test the block, go for max. wall thickness (just clean it up .005-.010)if there will be alot of N20. The engine doesn't care If the N2O goes in a hole .030" smaller.
If you have it in the budget I would look at the aluminum re-sleeve for the weight reduction in the nose. We have been as if not more reliable at the high HP levels with the re-sleeve over the iron block (on the testing we have done). The 422 in our Camero (C5-R heads) has close to 70 passes in the mid to hight 8 sec. range with a re-sleeve @ 4.100 bore. The combo is 4.100 bore/ 4.00 stroke/ 6.125 rod and a dish piston. Not trying to push the aluminum block but weight in nose may be something to consider?
Nick I wanted so much to go Alum block, but there was not enough positive response about the re sleeve reliability. My car is a street car. My plan is to remove as much weight off the nose to get my cars current weight back after the iron block. My car will never see the track. Only street racing for me
Launching!
Joined: Jan 2002
Posts: 252
Likes: 0
From: ONTARIO/CANADA
I know before being comfortable with the re-sleeved engines we installed a few iron blocks in street cars and did have some complaints about the handling performance with the extra nose weight. We installed our K-frame and a few other weight ruduction things to make up the diff. but at the end of the day the re-sleeve is about the came price if not cheaper when taking these things into consideration.
I am 100% confident with our re-sleeves!
I am 100% confident with our re-sleeves!
