Generation III Internal Engine 1997-2006 LS1 | LS6
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Old Aug 22, 2022 | 09:56 PM
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Default My hci

Starting my HCI. Tick sns 3 , prc 220 as cast , fast 92/92 on my ls1 . Car has speed engineering 1 7/8 long tubes and true duals over axle. Tick rebuilt t56, monster stage 3. Strange s60 w/ 410 . So far got passenger head off to discover a bent pushrod.

Bent pushrod

Damage to head from bent rod.
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Old Aug 23, 2022 | 01:43 AM
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Old Aug 23, 2022 | 06:01 AM
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That push rod's a trophy for a parts wall.
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Old Aug 23, 2022 | 06:44 AM
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Sounds like you have a good combo in the works, should make good power, I have a similar setup with 225cc Tea tfs heads and a ported 92 threw a S60 and it put down 488
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Old Aug 23, 2022 | 09:31 PM
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Sounds like a pretty wicked setup. It should make some pretty good power.
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Old Aug 24, 2022 | 04:16 PM
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Thanks y'all. I can't wait to get it done and hear how it sounds. Definitely not a fun job.
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Old Sep 6, 2022 | 07:20 PM
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Cam an oil pump in with new timing chain. About 5 hours cleaning deck surface. Waiting on some big q tips just to be 300% certain there's no coolant in bolt holes. Doing tick performance rocker trunion now. Coming together slowly but surely.

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Old Sep 6, 2022 | 10:52 PM
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Large q-tips.. good idea. I actually took a drinking straw and tapped it inside a shop vac hose and sealed around it with more tape. Pulled everything right out. I also took an old head bolt and dremeled grooves in the threads on 2 sides to chase the threads before vacuuming.

Don't forget all new gaskets and o-rings EVERY place possible. Crossover gaskets, thermostat o-ring.. they both leaked on mine after HCI. Save yourself the trouble and spend $10 on those.

I also suggest using a white rolic bristle disc on the old gasket material, both the heads/block and water pump/ block.
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Old Sep 8, 2022 | 03:33 PM
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Prc heads are on with with arp bolts.
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Old Sep 9, 2022 | 01:13 PM
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its a bitch of a job but when you're done and its running great its well worth it. Tackling an LQ4 build now to put in a 3rd gen or a nice 98-02 T/A
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Old Sep 12, 2022 | 09:44 PM
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It really is a bitch, but finally got my pushrod length measurement. Driver side called for 7.4 passenger 7.425. sucks having to order 2 sets. Replaced knock sensor and harness. Got headers on. Just waiting on ls6 coolant cross over and plugs to finish her up.
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Old Sep 12, 2022 | 10:06 PM
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Originally Posted by Spankstangs1999
It really is a bitch, but finally got my pushrod length measurement. Driver side called for 7.4 passenger 7.425. sucks having to order 2 sets. Replaced knock sensor and harness. Got headers on. Just waiting on ls6 coolant cross over and plugs to finish her up.
Why would you have different lengths? between heads? i don't want to say bad things... but wouldn't that mean the heads are not at the same height off the deck?
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Old Sep 12, 2022 | 10:12 PM
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Originally Posted by Gumby83
Why would you have different lengths? between heads? i don't want to say bad things... but wouldn't that mean the heads are not at the same height off the deck?
Ughh. I'm not sure man deck was flat and even. And heads were brand new from Texas speed. . It was just a hair longer and it put them closer to 7.425 then 7.4.
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Old Sep 14, 2022 | 08:35 AM
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Let us know what you put down #'s wise...I found an incredible deal on some stock 243's off a z06 so I just strapped those on, wish I splurged and ported them but the car put down like 398 on a mustang dyno.
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Old Sep 19, 2022 | 08:08 AM
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Setup sounds stout. I have a few combinations written down that are very similar to yours. These engines are amazing.
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Old Sep 19, 2022 | 10:11 AM
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Originally Posted by Spankstangs1999
Ughh. I'm not sure man deck was flat and even. And heads were brand new from Texas speed. . It was just a hair longer and it put them closer to 7.425 then 7.4.
Just use 7.425 All the way around and don't worry about it. More preload may not be a bad idea either If you're going to be revving it like crazy all the time. I like mine a little on the high side as my stuff sees a lot of high rpm abuse, 1 and 3/4 Just under two turns is where I like my preload to be. If a stock or 7.400" fits ok I'd throw some 7.450"s in it to be safe.. You might even get a few extra horsepower up top

Others may not like my recommendation or disagree with my reasoning however these are facts.

You can't hurt the engine with excessive lifter preload however you can ruin it with not enough. Running close to the bare minimum of preload can cause instability in the valve train as the revs increase. More preload keeps the valve train stable and ensures that you're getting the most from your cam higher in the RPM range where you're looking to make power.
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Old Sep 19, 2022 | 10:14 AM
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Originally Posted by stockA4
Just use 7.425 All the way around and don't worry about it. More preload may not be a bad idea either If you're going to be revving it like crazy all the time. I like mine a little on the high side as my stuff sees a lot of high rpm abuse, 1 and 3/4 Just under two turns is where I like my preload to be. If a stock or 7.400" fits ok I'd throw some 7.450"s in it to be safe.. You might even get a few extra horsepower up top

Others may not like my recommendation or disagree with my reasoning however these are facts.

You can't hurt the engine with excessive lifter preload however you can ruin it with not enough. Running close to the bare minimum of preload can cause instability in the valve train as the revs increase. More preload keeps the valve train stable and ensures that you're getting the most from your cam higher in the RPM range where you're looking to make power.
I actually screwed my math up, it is 7.425 all round. I'm just waiting on my base tune from frost to fire this baby up!
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Old Sep 19, 2022 | 10:15 AM
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https://www.motortrend.com/how-to/18...d-performance/

This guy knows what he's talking about.
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Old Sep 19, 2022 | 12:39 PM
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Originally Posted by stockA4
https://www.motortrend.com/how-to/18...d-performance/

This guy knows what he's talking about.
Amen to that, and he will say it if/when he doesn't. I wish that was more common.
This is a great read on pushrod length.
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Old Sep 27, 2022 | 04:41 PM
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So frost tune came in and got car running with no leaks. But I am having a issue with my fast 92 throttle body. I have my cable set in last hole and it holds it open slightly. This is a non tc car I don't believe there is any adjustments.
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