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

crossfire to carb

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Old Jun 11, 2008 | 02:53 PM
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Default crossfire to carb

ok my crossfire motor blew so im swaping in a motor from my 81 scottdale yes its a 350 and it has a fresh rebuild on it the truck has a broke frame so it a perfect swap for me after some research all i know for sure is i need a fuel regulator and to swap out the water pump and rest of the acceries but what eles do i need for this swap or is thier any hurdles i should watch for thanks for the help guys
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Old Jun 11, 2008 | 04:18 PM
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need carb linkage for 700r4, try bowtie overdrives they make a nice setup. Dropbase air cleaner, new HEI, and many many hours working out the wireing.
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Old Jun 11, 2008 | 04:40 PM
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Run a search on the topic. It has been discussed in great detail, and all the info needed is here.
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Old Jun 11, 2008 | 08:48 PM
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I did a search and found no real info just pepole asked and got a few tips here and thier what wireing is needed for this swap is it just to make the guages work or is it to get the motor to crank when i first got the vette every one said swap it for a carb now that the motor blew i cant find any real info come on guys someone has had to have done this swap hrlp me out
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Old Jun 11, 2008 | 09:24 PM
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Originally Posted by calpbs
need carb linkage for 700r4, try bowtie overdrives they make a nice setup. Dropbase air cleaner, new HEI, and many many hours working out the wireing.
Many hours working out wireing?I was not aware of that?can you tell us what was envolved?Ive read the mpg gauge will not work,and you may have to mod. a torque converter lock up i think?

Last edited by MR NICE; Jun 11, 2008 at 10:18 PM.
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Old Jun 12, 2008 | 12:04 AM
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thats all i found so far as well i just want to make sure
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Old Jun 12, 2008 | 12:12 AM
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Originally Posted by MR NICE
Many hours working out wireing?I was not aware of that?can you tell us what was envolved?Ive read the mpg gauge will not work,and you may have to mod. a torque converter lock up i think?
More like removing all the wiring. Dont need much to run a carbed engine.
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Old Jun 12, 2008 | 12:23 AM
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Originally Posted by calpbs
need carb linkage for 700r4, try bowtie overdrives they make a nice setup. Dropbase air cleaner, new HEI, and many many hours working out the wireing.

Holly makes a nice one too, here's the one on my '86.'

Many hours of wiring? false.



Last edited by AZC4Guy; Jun 12, 2008 at 12:26 AM.
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Old Jun 12, 2008 | 01:26 PM
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When I converted my 84 to carb the car had set for many years and I never got the CFI to work befor I scraped it. The point is well taken that you are actually just making the gauges work however there is a mess of wires running the CFI that will not be needed for the conversion. Remember if there is a gauge sensor then there will be a wire. It does become very basic very fast as I have discovered that most components seem to work fine except a few that are more likely the result of being 24 years old rather than being a conversion problem. I did go as far as removing the wire from the car, created a new harness to handle the MSD and now my underhood is clean and well thought out. When I discussed it on the forum it has not been popular however my last 1/8 mile pass was a 7.98 with alot of tire spin. It definitly puts you in a more conventional performance gain arena. I am contemplating some level of raised hood arrangement to come up with a better intake manifold. I presently use a Torker 2 with a BG mighty Demon 650. My transmission buddy upgraded my 700r4 to a single wire operation that runs through the brake switch. I put a toggle switch in as well so I have control of the lock up feature. I am not sure where you are located but if you are near the greater Chattanooga TN area I could probobly help you.
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Old Jun 12, 2008 | 03:14 PM
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Originally Posted by calpbs
I put a toggle switch in as well so I have control of the lock up feature.
Painless has a nice lockup kit too.
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Old Jun 12, 2008 | 09:43 PM
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Thanks for all the help guys i live in the little rock ar area as far as hoods go i alread have an 2&3/4" high rise hood so im not to woried about that sad part is i was just about finshed porting an CFI intake i think i will just cap and tie the extra wires i dont need so if i want to i can go back to the CFI later also i have 1/6 roller rockers some long tubes for my vette a high flow cat and a nitrous kit as well that will all be going on with this swap should be loads of fun thanks agian
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