C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

ENGINE QUESTIONS????

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Old Dec 15, 2003 | 01:45 AM
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Default ENGINE QUESTIONS????

I have a 84 vette that i have made MANY post about what to do with the new engine I didnt know if to keep the crossfire, go to TPI, or go to carb. Well I finally decided to go to carb, i bought a alum eld. performer intake and a 800 cfm eld carb. Ok first question what new parts will i need??? Will i need a new dist., regulator, and new lines??? Also will my digital stuff work?? And can some one post a link where i can get a GOOD CAM, i dunno if i want to go to big where i will need a stall but should i or should i keep it smaller just enough to keep me from a stall? ALSO with a bored out 86 suburban engine with the intake and carb and with factory 86 suburban heads (not sure what kinid) how much hp do u think i will have??? I was told by a guy about 325-350 and run about low 13's does that sound right?? thanks
:steering:
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Old Dec 15, 2003 | 01:56 AM
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Default Re: ENGINE QUESTIONS???? (vettespd20)

I went with a 750cfm on a 406, you'll need a HEI dist that was from a pre comp controlled chevy, I think pre 1972 or something. Other then that, you'll need a fuel regulator and get a psi guage just to make sure its working, keep it below 7psi. Plus if your doing this yourself worry about getting it running correctly before thinking about output Numbers and et times. :yesnod: Good luck. :thumbs:
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Old Dec 15, 2003 | 02:05 AM
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Default Re: ENGINE QUESTIONS???? (Light84vette)

Ok so is the 800 cfm to big that is what ONE guy told me or is that fine?? Also the regulator and stuff i am lost when it comes to that stuff do u have the DIRECT link to the one i will need so i dont have to search and get the wrong thing? thanks also I know its a far fetch but it should work out fine with that stuff right and couldnt u say it will have atleast 300 hp guessiing thanks
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Old Dec 15, 2003 | 08:39 AM
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Default Re: ENGINE QUESTIONS???? (vettespd20)

You will need a distributor as stated a (76-77) corvette HEI will work just fine. Your fuel lines will be fine you will just have to put a T between the preasure line and the return line with a F/P regulator. Your gauges will all work fine exept for the MPG. You will have to figure out how to lock up your converter if you have an auto. I installed a lock up kit ($70) so it locks up when the trany shifts into 4th but someone else said that if you leave the ECM in place on the 84 then the trany will still lock up but you need to make sure the converter locks up or you will trash your trany. I hope the intake you bought is a relitivly low profile intake because there is not much clearance for an air cleaner. You will also need a kit for your TV cable if the carb you bought is not made to operate with thye 700R (If you have a man then it doesn't mater. I think you are kind of big on the carb unless you have a prety stout cam in that thing. I used a Holley 650 and it was just about perfect with the cam I was running at the time.

What ever you do, do not start ripping wires out untill you know what they do and where thet are going or you will make a big mess. The gauges will reqire that you install all of the original sending units such as Temp, Oil Temp, Oil Pres, ect....
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Old Dec 15, 2003 | 02:04 PM
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Default Re: ENGINE QUESTIONS???? (84LT1)

You will also need a kit for your TV cable if the carb you bought is not made to operate with thye 700R (If you have a man then it doesn't mater.
The 4+3 manual trans used 1984 - 1988 has a TV cable. At least on the automatic, proper installation geometry and adjustment are CRITICAL.

RACE ON!!!
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Old Dec 15, 2003 | 04:53 PM
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Default Re: ENGINE QUESTIONS???? (CFI-EFI)

Ok i am sory if my next questions make any one upset, but I just dont know i have never done this so PLEASE bare with me. :)
Ok so what is the TV thing u guys are talking about, and how is it installed and how much?? I have a guy to do the work for me but he dont know what i am talking about lol. Also will i need a stall convertor, i am going with a bigger cam but not sure what size yet? and if i dont get the tv thing or whatever will this mess up my tranny?? thanks guys
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Old Dec 15, 2003 | 05:06 PM
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Default Re: ENGINE QUESTIONS???? (vettespd20)

I have a guy to do the work for me but he dont know what i am talking about lol.s
No offence, but I am wondering if he is quite the right guy for a project as big as this.

The TV is a cable from the tranny that is pulled by a lever on the carb, which sends information to the tranny to tell it when to shift.

I would recommend the Edelbrock 600 cfm carb, with electric choke (model 1406?? not sure). The Edelbrock carbs seem to be more plug and play than the Holley. Chances are it will work just fine out of the box, Holleys (in my experience) are more finicky.

Good Luck!
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Old Dec 15, 2003 | 05:27 PM
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Default Re: ENGINE QUESTIONS???? (britvette)

Oh him not knowing what i was talking was my fault lol, i told him the wrong thing i was confused sorry. But if i get the 600 cfm with the eletric choke, will i still need to worry about the trans is will that take care of it?? I changed my order just now to that model the guy said its no problem, so if i get that one will i have to worry about the tv stuff or will that model take care of everything???
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Old Dec 15, 2003 | 06:34 PM
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Default Re: ENGINE QUESTIONS???? (vettespd20)

if i get that one will i have to worry about the tv stuff or will that model take care of everything???
I doubt that carb has the TV (throttle valve) connection on it.
...and if i dont get the tv thing or whatever will this mess up my tranny??
From my previous post, does the word, CRITICAL, have any meaning to you?


[Modified by CFI-EFI, 4:37 PM 12/15/2003]
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Old Dec 15, 2003 | 06:58 PM
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Default Re: ENGINE QUESTIONS???? (CFI-EFI)

ok ok, so tell me what parts i will need to buy because i know what u guys are saying but I am not that good with cars yet. make a list of the parts i will need and est prices, and mods thanks a lot
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Old Dec 15, 2003 | 07:13 PM
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Default Re: ENGINE QUESTIONS???? (vettespd20)

ok ok, so tell me what parts i will need to buy because i know what u guys are saying but I am not that good with cars yet.
This is a great opportunity to start learning.
make a list of the parts i will need and est prices, and mods
I'll hop right on that.


[Modified by CFI-EFI, 5:16 PM 12/15/2003]
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Old Dec 15, 2003 | 08:33 PM
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Default Re: ENGINE QUESTIONS???? (CFI-EFI)

ok ok, so tell me what parts i will need to buy because i know what u guys are saying but I am not that good with cars yet.This is a great opportunity to start learning. make a list of the parts i will need and est prices, and mods I'll hop right on that.


[Modified by CFI-EFI, 5:16 PM 12/15/2003]
:lol: Good one,

Anyway, just make a trip to your local performance shop, They most likely have all the answers to your questions about going from TBI to Carb and will supply you with all the parts that you will need for it. OH yeah, and unplug that ecm, it doesnt really do anything after you take out the TBI units so just to be safe unplug it. :yesnod:
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Old Dec 16, 2003 | 12:04 AM
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Default Re: ENGINE QUESTIONS???? (Light84vette)

Ok i will try and find a performance shop around i dont know of any though. But in case i dont i just need to buy a tv kit, regulator make sure below 7, and a lock up kit is that it?? One more thing if i get the lock up kit will that make everything save and will that make sure that my trans dont get messed up?
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Old Dec 16, 2003 | 10:02 AM
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Default Re: ENGINE QUESTIONS???? (CFI-EFI)

I doubt that carb (600 cfm Edelbrock) has the TV (throttle valve) connection on it. ..

I swapped a Chevy sb into my 1974 Jaguar XJ6, complete with TH350, and that is the carb I used, can't remember how I did it now, but I remember fabbing up linkages etc. so it can be done. Works great.




[Modified by britvette, 8:54 PM 12/16/2003]
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Old Dec 16, 2003 | 10:22 AM
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Default Re: ENGINE QUESTIONS???? (vettespd20)

Dude, no offense at all, but you REALLY need to learn what you're doing to your car and what it's going to take. You will get so many different opinions and options about what you can do to your car. It's not a matter of, "what parts do I have to order". It should be, "what parts do I WANT to order".

There are so many different choices and routes you can go when switching to a carbed setup that there really isn't going to be a definitive parts list. You need to hold out from buying parts and throwing money at your engine until you learn what you're doing and why. It's much easier and much more satisfying to know what your doing instead of just being a "wallet racer".

Do you know why you want to use the '86 Suburban engine/heads? Is there a particular reason you are going with that setup, or is it just because some guy told you to? Have you explored any other options?

I did months of research on what I wanted to do for my new engine, and I was still keeping the TPI setup. All I'm saying is that you really need to hold off on this project until you figure out exactly what you want to do, and how much your budget will allow for.

And yes, you HAVE TO HAVE a TV cable bracket on your carb, or else your tranny will go caput. I doubt there are any carbs out there that have the bracket built onto the throttle linkage, but you can get an adapter plate from Summitracing.com or Jegs.com.

Good Luck! :cheers:
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Old Dec 16, 2003 | 10:49 AM
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Default Re: ENGINE QUESTIONS???? (dtorc4)

Dude, no offense at all, but you REALLY need to learn what you're doing to your car and what it's going to take.
REALLY !

One VERY good place to start, is the factory service manual. Go here to order one:

www.helminc.com/helm/homepage.asp?r=.

Besides actiual repair proceedures, each section explains the basic workings of the items covered in that section. You need to get this book and study it, even though you don't seem predisposed to actually doing any of the work yourself. You will, at the least, be able to gain the knowledge of how things work.


[Modified by CFI-EFI, 9:14 AM 12/16/2003]
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Old Dec 16, 2003 | 07:15 PM
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Default Re: ENGINE QUESTIONS???? (CFI-EFI)

Ok i just called jegs and asked them about the lock up kit for my car and they said 125.00. Now that is for the 700 R4, that is what i have correct, and with that and the TV cable kit I should have no problems as long as I use the regulator and the dist.????
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Old Dec 16, 2003 | 07:28 PM
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Default Re: ENGINE QUESTIONS???? (vettespd20)

ok i just got off the phone with jegs AGAIN i got prices and part numbers for everything i need. Ok let make sure i got this right. The tv adaptor and transmission braket, is 25 bucks.
the lock up kit for a 700 R4 is 125 bucks
the holly fuel reg. is 23 bucks
and a good cam is 477 lift 268 280 duration is 170 with lifters. With this and dist will this work great let me know thanks
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Old Dec 18, 2003 | 01:35 AM
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Default Re: ENGINE QUESTIONS???? (vettespd20)

TTT
ok i just got off the phone with jegs AGAIN i got prices and part numbers for everything i need. Ok let make sure i got this right.
The dist. for the carb
The tv adaptor and transmission braket, is 25 bucks.
the lock up kit for a 700 R4 is 125 bucks
the holly fuel reg. is 23 bucks
The fuel regulator
and a good cam is 477 lift 268 280 duration is 170 with lifters. With this and dist will this work great let me know thanks TTT
if i get this stuff should it be fine???
:steering:
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