LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

am i getting reamed on prices?

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Old Apr 15, 2004 | 12:00 AM
  #16  
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Originally posted by RyanS_Z28
dallas
Sorry man I would of liked to help out but I live in College Station..
It would have been a weekend kinda job..
I dunno how fast you are looking at doing this but PM me and I'll see what I can do I have two close friends that I have not seen in a while that live in Dallas. Would not mind driving up to see them..
Old Apr 15, 2004 | 12:08 AM
  #17  
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Ever try to get a shop to change your plugs when they have a special going? It's pretty funny.
Old Apr 15, 2004 | 01:14 AM
  #18  
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i had a revelation before i fell asleep.

it would cost less to just install LT4 heads and intake. the install would cost less than $910 because he wouldnt have to machine anything, he would just be lubing and putting them on, there is no damage to anything but the seal and possibly the heads, which doesnt matter if they come off. my birthday is this month, maybe i could just decline my gifts from family to this project and get some much needed LT4 heads and intake (assuming i also get the new fuel rails for my 93)

if this is true, could i run for about a month without a new tune? i am going to do a PCMforless this summer, but i dont have a job currently and my dad wont shell out another $140 for a chip if its not absolutely nessisary. i could take it easy on the heads and just get to school and back until i have money for the PCM. then this summer i could put in a CC305 cam and pro mags and id be rolling with about 475 flywheel

has anyone ever done heads before they did their cam? i know its always best to do cam first, but with big heads and a stock cam i would still be in good shape, right?
Old Apr 15, 2004 | 08:12 AM
  #19  
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Yea 475 is just a ridiculous guesstimate at how much power you'd have. I'd shoot more towards 400 after the cam and a good bit of bolt on's and good tuning. Getting the LT1 heads and intaked ported will flow better than the stock LT4 heads/intake.
It'll run alright probably without a good tune, just not as much power as its capable of.

Carson
Old Apr 15, 2004 | 08:28 AM
  #20  
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475 is assuming LT4 heads, intake, CC305. the LT4 swap guarentees 425+ hp on a stock motor, so from 275 to 425, in addition to my headers and a correct tune, plus a CC305 instead of a hotcam, it was very optimistic but not as far out there as before. i didnt mention all of those would be together.

there is no way i could get my dad to have this guy port the heads while he is at it, the guy simply wouldnt do it without charging tons more, and to me the LT4s are looking appealing because they dont need to be worked before install, and they arent used with 70,000 miles on them. if you looked at the prices i compared, the LT4 heads wont be that much more than getting those stock heads just reworked (NO porting).

the LT4 heads can always be ported later if i want them to be. my goal is only about 500hp NA flywheel because i only have this one car and ill have to make trips to austin and back (~300 miles) every now and then so a 383 stroker is out of the question right now plus im unemployed for the next month.

assuming i get those LT4s would i require a tune or could i hobble along for a month without one? i kinda decided id prob go with a hotcam instead of a CC because the hotcam is very mild but with some good gains, i need to pass emissions and get great mileage, hardly any racing (track), more for boast
Old Apr 15, 2004 | 10:09 AM
  #21  
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425+ hp for the LT4 conversion is wishful thinking. Look at the LT4's from the factory. Did they have 425hp? No. You're not going to get anywhere near 500hp NA with a CC305 stroker or not.

-Tony
Old Apr 15, 2004 | 10:19 AM
  #22  
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Originally posted by Mystic95Z
425+ hp for the LT4 conversion is wishful thinking. Look at the LT4's from the factory. Did they have 425hp? No. You're not going to get anywhere near 500hp NA with a CC305 stroker or not.

-Tony
MAYBE 425 at the flywheel if you're lucky nd have a lot of other bolt on's. Probably need a bigger cam to pull it off though, either way...not gonna happen at the wheels.

Carson
Old Apr 15, 2004 | 10:35 AM
  #23  
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Thats an extremely big MAYBE... He just shouln't get his hopes up. His expectations are unrealistic IMHO.

-Tony
Old Apr 15, 2004 | 12:22 PM
  #24  
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of course its flywheel. im reading directly out of the catalog, and its not just this one, its several, in addition to GMpartsdirect.com the LT4s didnt come with the hotcam did they? i think it was modified but it wasnt the hotcam.

http://www.paceparts.com/product.asp?3=55996
Old Apr 15, 2004 | 12:48 PM
  #25  
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Those numbers are flywheel, probably no accessories and all the bolt-ons possible, and a hell of a tune.

Carson

Originally posted by RyanS_Z28
of course its flywheel. im reading directly out of the catalog, and its not just this one, its several, in addition to GMpartsdirect.com the LT4s didnt come with the hotcam did they? i think it was modified but it wasnt the hotcam.

http://www.paceparts.com/product.asp?3=55996
Old Apr 15, 2004 | 01:24 PM
  #26  
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Honestly, it sounds like you need to go ahead and fork out the money to have your car fixed because it doesnt sound like you really know what you are doing. You mention just pulling valve covers and taking off the heads, ahhh NO! You have to disconnect everything, take of the intake manifold, take off the coolant cross over tube, EGR tube, exhaust manifolds/headers, etc... You also mentioned you dont know where the pushrods are, so I'm sure you dont know how to set the valve lash. You can either take this on as a project to learn, but expect the car to be down for quite sometime seeing as you are a newbie, or pay to have it fixed. The price is a little high, but not outrageous. If you know and trust this shop then in your situation I think you should go ahead and have it done.
Old Apr 15, 2004 | 01:47 PM
  #27  
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I'm gonna have to agree with ZZtop.
Old Apr 15, 2004 | 04:20 PM
  #28  
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if this werent my daily driver id do it myself and either find someone to show me how to do it or read some books, but it kinda has to be fixed ASAP. in the future ill be able to take it apart and put it back together again but for now all i know are parts and lingo. i could tell you hardened pushrods in the 93 are better than the non-hardened in the 94 but i just found out yesterday where those go.

<---- Me
Old Apr 15, 2004 | 08:48 PM
  #29  
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LT1s had hardened pushrods till 95, 96 and 97 motors didn't have them.
Old Apr 15, 2004 | 09:09 PM
  #30  
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Originally posted by RyanS_Z28
i had a revelation before i fell asleep.

it would cost less to just install LT4 heads and intake. the install would cost less than $910 because he wouldnt have to machine anything, he would just be lubing and putting them on, there is no damage to anything but the seal and possibly the heads, which doesnt matter if they come off. my birthday is this month, maybe i could just decline my gifts from family to this project and get some much needed LT4 heads and intake (assuming i also get the new fuel rails for my 93)

if this is true, could i run for about a month without a new tune? i am going to do a PCMforless this summer, but i dont have a job currently and my dad wont shell out another $140 for a chip if its not absolutely nessisary. i could take it easy on the heads and just get to school and back until i have money for the PCM. then this summer i could put in a CC305 cam and pro mags and id be rolling with about 475 flywheel

has anyone ever done heads before they did their cam? i know its always best to do cam first, but with big heads and a stock cam i would still be in good shape, right?
Well you seem like a smart guy do the work yourself and save some$



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