LT1-LT4 Modifications 1993-97 Gen II Small Block V8

Lt1 Valvetrain build and feedback

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Old Mar 24, 2017 | 12:00 PM
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Default Lt1 Valvetrain build and feedback

Ok this is my first post ,and I wanted some feed back on some of the parts I'm about to order. So im ordering

comp cam Xtreem fuel injection cam and lifter kit,
rocker arm kit 1.6 magnum rockers and push rods,
comp cam high energy timing set ,
msd ignition kit lt1 from ebay
Richmond gear gm 4.10
trickflow tfx efi throttle body 58mm
long tube headers
acdelco water pump
slp performance foil
If any one has used any of these can you give me some feedback , and with all this would I need to get bigger injectors ? How much hp do you think I will gain from this ?
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Old Mar 24, 2017 | 01:01 PM
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From: Jackstandican
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what year car?
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Old Mar 24, 2017 | 01:03 PM
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Originally Posted by SS RRR
what year car?
It's a 1997 camaro z28 with 104000 miles
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Old Mar 24, 2017 | 01:11 PM
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From: Jackstandican
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Wouldn't buy a 58mm TB
Don't know much about the timing sets, but should be fine as long as it's LT1 specific
Would stay away from an ignition box. The '96-'97 ignition systems were much stronger than previous years. For N/A the stock ignition is just fine.
Unless your w/p is leaking I wouldn't replace it.
It has been stated Richmond gears have a tendency to make more noise than Motive gears. Supposedly there is less margin for error to get a Richmond gear set up than Motives.
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Old Mar 24, 2017 | 01:22 PM
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Originally Posted by Temo Leal
comp cam Xtreem fuel injection cam and lifter kit,
rocker arm kit 1.6 magnum rockers and push rods,
comp cam high energy timing set ,
?
what "extreme cam" part #?

you don't need the MSD ignition box

The 58 MM TB will cost more than any performance gains are worth (if any) with your build.

what rocker arm part #?
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Old Mar 24, 2017 | 01:25 PM
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Originally Posted by SS RRR
Wouldn't buy a 58mm TB
Don't know much about the timing sets, but should be fine as long as it's LT1 specific
Would stay away from an ignition box. The '96-'97 ignition systems were much stronger than previous years. For N/A the stock ignition is just fine.
Unless your w/p is leaking I wouldn't replace it.
It has been stated Richmond gears have a tendency to make more noise than Motive gears. Supposedly there is less margin for error to get a Richmond gear set up than Motives.
I've read that the optispark durring any year is just prone to messing up , and plus when I step on the gas there's 1-2 second hesataion . And why stay away from the ignition box isent it provide a stronger spark than the stock?
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Old Mar 24, 2017 | 01:31 PM
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Originally Posted by ******
what "extreme cam" part #?

you don't need the MSD ignition box

The 58 MM TB will cost more than any performance gains are worth (if any) with your build.

what rocker arm part #?
COMP Cams Xtreme Fuel Injection Cam and Lifter Kits K07-468-8

And here is the rocker arms http://www.compperformancegroupstores.com/store/merchant.mvc?Store_Code=CC&Screen=PROD&Product_Cod e=RPM1418-16

What about 52mm throttle ?

And this is only the first part of my build for this year , either near the end of this year or sometime next year I will be getting the bottom end done and adding a turbo
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Old Mar 24, 2017 | 01:32 PM
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Because it's simply not needed with your stock ignition for N/A. The output on the coil is far stronger than on OBDI cars. You would be wasting your money in buying it, not to mention MSD's have been known to go bad, and I take it the box you are contemplating buying is used? If so, who is to say it's any good? Your hesitation can be from many different things. Opti failures are mostly mechanical or sensor related. Something an ignition box cannot fix.

For TB, I'd stay with the stock one.
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Old Mar 24, 2017 | 01:37 PM
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Originally Posted by SS RRR
Because it's simply not needed with your stock ignition for N/A. The output on the coil is far stronger than on OBDI cars. You would be wasting your money in buying it, not to mention MSD's have been known to go bad, and I take it the box you are contemplating buying is used? If so, who is to say it's any good? Your hesitation can be from many different things. Opti failures are mostly mechanical or sensor related. Something an ignition box cannot fix.

For TB, I'd stay with the stock one.
ok so this is a waste of money ??http://www.ebay.com/itm/like/310781377982?lpid=82&chn=ps&ul_ref=http%253A%252F% 252Frover.ebay.com%252Frover%252F1%252F711-117182-37290-0%252F2%253Fmtid%253D1588%2526kwid%253D1%2526crlp% 253D183016357862_324272%2526itemid%253D31078137798 2%2526targetid%253D340520992487%2526rpc%253D0.12%2 526rpc_upld_id%253D111810%2526device%253Dm%2526mpr e%253Dhttp%25253A%25252F%25252Fwww.ebay.com%25252F ulk%25252Fitm%25252Flike%25252F310781377982%25253F lpid%25253D82%252526chn%25253Dps%2526adtype%253Dpl a%2526googleloc%253D9023896%2526poi%253D%2526campa ignid%253D764892186%2526adgroupid%253D39783961149% 2526rlsatarget%253Daud-281204642796%253Apla-340520992487%2526gclid%253DCjwKEAjwh9PGBRCfso2n3OD gvUcSJAAhpW5oaXboLSi4iQFJaJVKX-tZlopRpN9RuJNcZxGwkwj9JBoCuifw_wcB%2526srcrot%253D 711-117182-37290-0%2526rvr_id%253D1188891705027&ul_noapp=true
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Old Mar 24, 2017 | 01:40 PM
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I'm going to mirror what has already been said about not wasting your money on an MSD box and a larger throttle body. Don't expect to get anything out of those two items at your modification level except a deeper hole in your wallet.

You have some kind of issue going on with your car and an msd box ain't gonna fix it. The opti isn't nearly as bad as some people make it out to be. I've owned LT1s since 2004 and never had an opti related issue. In fact the only ignition related issue I ever experienced was the ICM going bad.

More details about valvetrain should be provided such as what cam, what rockers, etc etc because you didn't define that in your post.
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Old Mar 24, 2017 | 01:46 PM
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OK no msd but here are the rocker arms . http://www.compperformancegroupstores.com/store/merchant.mvc?Store_Code=CC&Screen=PROD&Product_Cod e=RPM1418-16

And here is the cam
COMP Cams Xtreme Fuel Injection Cam and Lifter Kits K07-468-8

https://m.summitracing.com/parts/cca-k07-468-8?seid=srese1&cm_mmc=pla-google-_-shopping-_-srese1-_-comp-cams&gclid=CjwKEAjwh9PGBRCfso2n3ODgvUcSJAAhpW5oh1S wpbjWpA3uBDK9MuMzNq_JI2D1gUjxJ88M12zb4BoCP_Pw_wcB
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Old Mar 24, 2017 | 01:53 PM
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Originally Posted by Temo Leal
OK no msd but here are the rocker arms . http://www.compperformancegroupstore...ode=RPM1418-16

And here is the cam
COMP Cams Xtreme Fuel Injection Cam and Lifter Kits K07-468-8

https://m.summitracing.com/parts/cca...zb4BoCP_Pw_wcB
I don't mean to be mean here but I recommend that you start over and do a good amount of research before proceeding. That 242/248 duration cam is going to be a very poor choice in your otherwise stock 5.7 LT1, that is unless all you are looking for is a max effort drag car and are willing to spin that motor to the absolute moon and lose streetability. FWIW, Comp's advertised rpm ranges are way off for many of their cams this one included.

Start by reading this:
https://ls1tech.com/forums/lt1-lt4-m...ion-guide.html

It's an oldie but a goodie.
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Old Mar 24, 2017 | 01:58 PM
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From: Jackstandican
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Originally Posted by Temo Leal
ok so this is a waste of money
Yep. Not needed. At the very least if you want to replace your opti then there has been good things (some bad) about the MSD ignition. If you want to replace your coil, a stock one is fine. I am running a MSD coil on mine and it's fine. Others have said the MSD coil could output less than stock. I haven't had any issues. As far as the MSD opti is concerned, it is about all that's offered anymore that isn't a gigantic pile of crap.
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Old Mar 24, 2017 | 02:21 PM
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Loads of people making sky-high power on the stock throttle body, too. I don't think the stocker becomes a restriction until you're over like 500-600 horsepower (or more). But hey - they look cool.
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Old Mar 24, 2017 | 02:22 PM
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Temo

that cam is stupid big for what you are doing now

you say you are doing a "bottom end build later and turbo"...

the turbo will be the tail wagging the dog on what cam selection and compression ratio you NEED to go with.

Step back and think more about what the final engine you want as piecing the build together, especially with the cam & springs you selected, is a plan that will end in a big bang

Someone like Lloyd Elliott or Advanced Induction would be a good place to get heads & cam from based on what kind of motor you want to build. A NA or power adder motor (turbo). Two different build requirements
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