Going for the Record
03-10-2012, 11:16 PM
#21
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My little 352 held the record until Andreas ran his Monte Carlo. I think the record lasted because we don't have any classes here in the states that put these engines in lightweight big tire cars. I believe you will see some of these radial guys get into the 6's this year with LS power, the big tire lightweight stuff will go in deep! The 352 had 205 AFR 4 bolt heads on a factory block out of a pickup truck!! It was the best parts available at the time, AFR had the only head! My how times have changed......
Kurt
Kurt
its awesome how the LS platform has progressed
03-11-2012, 12:25 AM
#22
Deck surface and sealing wise, it was in the stone age. They had to mop up the water it pushed with a bucket after each run due to 4 bolt heads and no readily available aftermarket block to accept a 6 bolt head.
As TJ said they also used nitrous to spool the turbo's and to assist power to the 330' probably then shut it off and let the turbo's work in their pressure range.
03-11-2012, 08:19 AM
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I thought at the time the record would not last, I wanted first in the 6's. Ronnie Duke went 6.9X within 3 weeks of our run and Mark (can't remember last name) in Australia running with help from Con and Vic was breaking transmissions but ran a few 7.0X runs. Every time he tried to take off hard the trans broke.
When I ran Marks engine I only had the 4000G dyno and it gave up around 1600hp, so not sure what his would have made. It had a single cast wheel 106 then and I think the boost psi was only 25 when the dyno steamed the brake. Mark was around 2500 pounds, Casper was around 2900 and Andreas is down lighter than both. The UTE is running again in Australia with a 427 6 bolt engine still using cathedral heads and the original induction except for head castings. He still runs a powerglide but latest reports are good as it was holding.
The Pro Mod Dave has is pretty cool, although I have never seen it in person. I would watch for the three to trade the record around a bit this year if all goes well.
Good luck to all!!
Kurt.
When I ran Marks engine I only had the 4000G dyno and it gave up around 1600hp, so not sure what his would have made. It had a single cast wheel 106 then and I think the boost psi was only 25 when the dyno steamed the brake. Mark was around 2500 pounds, Casper was around 2900 and Andreas is down lighter than both. The UTE is running again in Australia with a 427 6 bolt engine still using cathedral heads and the original induction except for head castings. He still runs a powerglide but latest reports are good as it was holding.
The Pro Mod Dave has is pretty cool, although I have never seen it in person. I would watch for the three to trade the record around a bit this year if all goes well.
Good luck to all!!
Kurt.
03-11-2012, 08:24 AM
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I still remember changing the springs in the blow off valve trying to get it to hold 30psi!!
I built the engine for a class here on tech, when that died I borrowed Casper for some fun!
Kurt
03-11-2012, 10:38 AM
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I understand that! We ran Casper around eight times, it went to the end of the track under power 2 times. The first trans would not go in high gear and ruined the first 5-6 runs. The first run under power it went 7.02@202 on 25psi so I turned it up and shook the tires so hard the rear wheel bearings broke. I took it home and fixed the wheel bearings and replaced the front brakes as only one chute opened on the 202 pass and we cracked both front rotors. The next pass it went 6.86@205, after that we ran Mike's Monte Carlo as we brought that also for testing.
Kurt
Kurt
03-11-2012, 02:34 PM
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Our heads are very different in the valve geometry. We changed the angle from stock so that when you shim the stands, the rocker doesn't move around on the valve stem, it simply goes straight up right where it was.
This allows running far more lift and a taller valve. Our valves are 5.300 and 5.330 and require a 8.600 push rod, but if you're going for all out performance, this geometry helps with valve control and provides for more lift, we're the only ones on the market doing this, everything else is just a stock kock off. This also allows for much bigger springs to be used. We believe we've solved some of the short comings with LSX stock design. It requires a little more knowledge when doing a build in terms of geometry, but it's effective.
We also put more water around the chambers, to cool the chambers more, allowing for more compression and timing.
03-11-2012, 03:16 PM
#29
Thanks. Here's a few good examples.
Our heads are very different in the valve geometry. We changed the angle from stock so that when you shim the stands, the rocker doesn't move around on the valve stem, it simply goes straight up right where it was.
This allows running far more lift and a taller valve. Our valves are 5.300 and 5.330 and require a 8.600 push rod, but if you're going for all out performance, this geometry helps with valve control and provides for more lift, we're the only ones on the market doing this, everything else is just a stock kock off. This also allows for much bigger springs to be used. We believe we've solved some of the short comings with LSX stock design. It requires a little more knowledge when doing a build in terms of geometry, but it's effective.
We also put more water around the chambers, to cool the chambers more, allowing for more compression and timing.
Our heads are very different in the valve geometry. We changed the angle from stock so that when you shim the stands, the rocker doesn't move around on the valve stem, it simply goes straight up right where it was.
This allows running far more lift and a taller valve. Our valves are 5.300 and 5.330 and require a 8.600 push rod, but if you're going for all out performance, this geometry helps with valve control and provides for more lift, we're the only ones on the market doing this, everything else is just a stock kock off. This also allows for much bigger springs to be used. We believe we've solved some of the short comings with LSX stock design. It requires a little more knowledge when doing a build in terms of geometry, but it's effective.
We also put more water around the chambers, to cool the chambers more, allowing for more compression and timing.
You will be the reason the LSX get's into the 5 second zone.
Can't wait to see what is next.
03-11-2012, 03:46 PM
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Thanks. Here's a few good examples.
Our heads are very different in the valve geometry. We changed the angle from stock so that when you shim the stands, the rocker doesn't move around on the valve stem, it simply goes straight up right where it was.
This allows running far more lift and a taller valve. Our valves are 5.300 and 5.330 and require a 8.600 push rod, but if you're going for all out performance, this geometry helps with valve control and provides for more lift, we're the only ones on the market doing this, everything else is just a stock kock off. This also allows for much bigger springs to be used. We believe we've solved some of the short comings with LSX stock design. It requires a little more knowledge when doing a build in terms of geometry, but it's effective.
We also put more water around the chambers, to cool the chambers more, allowing for more compression and timing.
Our heads are very different in the valve geometry. We changed the angle from stock so that when you shim the stands, the rocker doesn't move around on the valve stem, it simply goes straight up right where it was.
This allows running far more lift and a taller valve. Our valves are 5.300 and 5.330 and require a 8.600 push rod, but if you're going for all out performance, this geometry helps with valve control and provides for more lift, we're the only ones on the market doing this, everything else is just a stock kock off. This also allows for much bigger springs to be used. We believe we've solved some of the short comings with LSX stock design. It requires a little more knowledge when doing a build in terms of geometry, but it's effective.
We also put more water around the chambers, to cool the chambers more, allowing for more compression and timing.
03-11-2012, 07:54 PM
#31
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That's cool John! My AFR heads had 1.550 springs, 5.5 long valves and the pushrods were 1/2 inch in diameter and over 9 inches long. I put thick spacers in the seat area to jack up the spring seat so I could get the larger springs in. We then built a jesel bar that moved the rockers back so far I had to weld up the outside of the cover cause clearance caused the rocker to sit outside the cover.
The newer All Pro 12-1 and 12-2 take care of all these problems but still require the longer pushrods of course.
Kurt
The newer All Pro 12-1 and 12-2 take care of all these problems but still require the longer pushrods of course.
Kurt
Thanks. Here's a few good examples.
Our heads are very different in the valve geometry. We changed the angle from stock so that when you shim the stands, the rocker doesn't move around on the valve stem, it simply goes straight up right where it was.
This allows running far more lift and a taller valve. Our valves are 5.300 and 5.330 and require a 8.600 push rod, but if you're going for all out performance, this geometry helps with valve control and provides for more lift, we're the only ones on the market doing this, everything else is just a stock kock off. This also allows for much bigger springs to be used. We believe we've solved some of the short comings with LSX stock design. It requires a little more knowledge when doing a build in terms of geometry, but it's effective.
We also put more water around the chambers, to cool the chambers more, allowing for more compression and timing.
Our heads are very different in the valve geometry. We changed the angle from stock so that when you shim the stands, the rocker doesn't move around on the valve stem, it simply goes straight up right where it was.
This allows running far more lift and a taller valve. Our valves are 5.300 and 5.330 and require a 8.600 push rod, but if you're going for all out performance, this geometry helps with valve control and provides for more lift, we're the only ones on the market doing this, everything else is just a stock kock off. This also allows for much bigger springs to be used. We believe we've solved some of the short comings with LSX stock design. It requires a little more knowledge when doing a build in terms of geometry, but it's effective.
We also put more water around the chambers, to cool the chambers more, allowing for more compression and timing.
03-12-2012, 04:44 AM
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That's cool John! My AFR heads had 1.550 springs, 5.5 long valves and the pushrods were 1/2 inch in diameter and over 9 inches long. I put thick spacers in the seat area to jack up the spring seat so I could get the larger springs in. We then built a jesel bar that moved the rockers back so far I had to weld up the outside of the cover cause clearance caused the rocker to sit outside the cover.
The newer All Pro 12-1 and 12-2 take care of all these problems but still require the longer pushrods of course.
Kurt
The newer All Pro 12-1 and 12-2 take care of all these problems but still require the longer pushrods of course.
Kurt
You can run BBC springs on our heads because when you move it up, it goes straight up, no welding would have been necessary. Some clearance may be needed by the valve cover rail, based on the rockers, but very minor modification.
I haven't seen the all pros, but ours price out at $2800 for the top of the line CNC'd LS7 CNC'd head. That's a 296CC, completely assembled, some dealers will cut a deal. Probably looking at $2500 or so, but I can't speak for the dealers.
03-12-2012, 07:29 AM
#34
Kurt, your car was flat hauling a long time ago, nothing short of amazing!
We are going to fill the block and dry deck the heads so no worries of pressurizing the cooling system. Not to mention the 9/16" head studs and the 7/16" outer should help with power production.
We are going to fill the block and dry deck the heads so no worries of pressurizing the cooling system. Not to mention the 9/16" head studs and the 7/16" outer should help with power production.
03-12-2012, 07:59 AM
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Send me info on the 2800 dollar top of the line LS7 heads at kuperf427@yahoo.com, I am curious valve supplier and material used and flow numbers/valve sizes if you have them.
Thanks
Kurt
Thanks
Kurt
You can run BBC springs on our heads because when you move it up, it goes straight up, no welding would have been necessary. Some clearance may be needed by the valve cover rail, based on the rockers, but very minor modification.
I haven't seen the all pros, but ours price out at $2800 for the top of the line CNC'd LS7 CNC'd head. That's a 296CC, completely assembled, some dealers will cut a deal. Probably looking at $2500 or so, but I can't speak for the dealers.
I haven't seen the all pros, but ours price out at $2800 for the top of the line CNC'd LS7 CNC'd head. That's a 296CC, completely assembled, some dealers will cut a deal. Probably looking at $2500 or so, but I can't speak for the dealers.
03-12-2012, 08:50 AM
#37
nice car i remember helpn tootee build that thing along time ago for harmons restoration. tootee called me a while back and said yall had a ls in it and was wantn me to come and check it out since thats all we mess with now. i promise u wont find a better car builder and he is a real smart guy! good luck and keep us updated!!!!!!!!!
03-12-2012, 10:00 AM
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Kurt, your car was flat hauling a long time ago, nothing short of amazing!
We are going to fill the block and dry deck the heads so no worries of pressurizing the cooling system. Not to mention the 9/16" head studs and the 7/16" outer should help with power production.
We are going to fill the block and dry deck the heads so no worries of pressurizing the cooling system. Not to mention the 9/16" head studs and the 7/16" outer should help with power production.
03-12-2012, 01:56 PM
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Send me info on the 2800 dollar top of the line LS7 heads at kuperf427@yahoo.com, I am curious valve supplier and material used and flow numbers/valve sizes if you have them.
Thanks
Kurt
Thanks
Kurt
here's a link to the heads:
http://www.theengineshop.com/product...num-heads.html
The Valves are MANLEY stainless steel.
As to flow numbers, we're not huge believers in them, the joke around the office is "what do you want them to be"... and I know you guys are smarter than to use flow numbers to determine anything...We advertise our flow numbers here:
http://www.theengineshop.com/product...f_file-209.pdf
Note we post both 600 and 1200 benches, we flow without a pipe, etc...etc...etc...
Customers have told us that they consistently flow more than advertised, and maybe not as much as some PEAK advertised numbers, but more across the board.