L98 TPI to Carb
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sahhas (08-15-2021)
03-29-2009, 11:16 AM
#24
03-29-2009, 12:09 PM
#26
I like the car... I don't see many Gold 85's or any other years for that matter. I already have put on a ported and polished plenium with bigger runners and a set of Hooker ceramic headers and stainless steel magnaflows...not to mention the ZR1 wheels and recovering the seats. I like being able to work on the car myself and I can't work on the fuel injection....My grandfather worked at holley for 40 years and he told me that the reason they came up with EFI is so you can't work on it.
03-29-2009, 01:02 PM
#27
Burning Brakes
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New fuel injectors $250 is on the lower side and it will take all day...now lets talk about the computer.
I have delt with fuel injection one other time and I hate it 
It's a huge pain in the a$$... If fuel injection is so easy why is it that Harold Martin(The man that has all the patents for EFI at GM) can't make it work on his racecar?
03-29-2009, 01:28 PM
#28
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The main difference between the EFI and carb is drivability - it starts rough until it warms up, may be in part for the cam, but I know most carbs have trouble in the cold. I lost about 6MPG on average, down to 14 in city and 17-18 on highway. It really depends on how many RPMs you're hitting, I cruise around at over 2500 in the city so that may be why it's so low for me. :P
If you don't like EFI, and you like tinkering with carbs, I'd go for it if you're sure that's what you want. I haven't had any problems since the swap last year, and parts for the whole setup were ~$500. It's a lot cheaper to maintain a carb than all those damn sensors with the fuel injection..
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The Notorious V.I.G. (01-17-2022)
03-29-2009, 01:35 PM
#30
I swapped out my EFI setup for a Holley 750 & Performer intake, and the RPMs pick up a lot better, especially 3k-5500, but because it's not an RPM intake it falls off after 5800. Don't know what your gears are, but I have 700-R4 w/3.07s and torque is plentiful all over the powerband. I'm considering a port match & portwork on the intake this year.
The main difference between the EFI and carb is drivability - it starts rough until it warms up, may be in part for the cam, but I know most carbs have trouble in the cold. I lost about 6MPG on average, down to 14 in city and 17-18 on highway. It really depends on how many RPMs you're hitting, I cruise around at over 2500 in the city so that may be why it's so low for me. :P
If you don't like EFI, and you like tinkering with carbs, I'd go for it if you're sure that's what you want. I haven't had any problems since the swap last year, and parts for the whole setup were ~$500. It's a lot cheaper to maintain a carb than all those damn sensors with the fuel injection..
The main difference between the EFI and carb is drivability - it starts rough until it warms up, may be in part for the cam, but I know most carbs have trouble in the cold. I lost about 6MPG on average, down to 14 in city and 17-18 on highway. It really depends on how many RPMs you're hitting, I cruise around at over 2500 in the city so that may be why it's so low for me. :P
If you don't like EFI, and you like tinkering with carbs, I'd go for it if you're sure that's what you want. I haven't had any problems since the swap last year, and parts for the whole setup were ~$500. It's a lot cheaper to maintain a carb than all those damn sensors with the fuel injection..
If not your trans will be running 20 degrees or more hotter at cruise speeds.
03-29-2009, 02:04 PM
#31
Race Director
I carbed my 84 for a couple of years and went back to fuel injection (superam). Car ran well with a Holley double pumper. Main problem was fuel perculation after shutdown. The hood seals so well that after shutdown, the engine compartment was so hot that fuel would perculate out of the carb into the venturis. I had to cut these ducts in the hood to allow for engine cooling.
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sahhas (08-15-2021)
03-29-2009, 02:26 PM
#32
Let's see....carb rebuild by me about 30 bucks New fuel injectors $250 is on the lower side and it will take all day...now lets talk about the computer. I have delt with fuel injection one other time and I hate it It's a huge pain in the a$$... If fuel injection is so easy why is it that Harold Martin(The man that has all the patents for EFI at GM) can't make it work on his racecar?
New fuel injectors $250 is on the lower side and it will take all day...now lets talk about the computer. I have delt with fuel injection one other time and I hate it It's a huge pain in the a$$... If fuel injection is so easy why is it that Harold Martin(The man that has all the patents for EFI at GM) can't make it work on his racecar?http://www.autoimagery.com/store/cgi...ch=witherspoon
03-29-2009, 02:54 PM
#33
Melting Slicks
I carbed my 84 for a couple of years and went back to fuel injection (superam). Car ran well with a Holley double pumper. Main problem was fuel perculation after shutdown. The hood seals so well that after shutdown, the engine compartment was so hot that fuel would perculate out of the carb into the venturis. I had to cut these ducts in the hood to allow for engine cooling.
I had the same issue on mine so I had to remove the hood seal to let the heat out.
03-29-2009, 03:11 PM
#34
Burning Brakes
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If the carb is easier for you and more affordable, then that is the way should definately go. Sorry to hear that he can't make the fuel injection work. I can tell you that I have raced a fuel injection C4 for years and along with many others, have seemed to make it work just fine.
http://www.autoimagery.com/store/cgi...ch=witherspoon
http://www.autoimagery.com/store/cgi...ch=witherspoon
I have tried swivels, extensions and I don't see how to get at it without removing the wipermotor. I by no way am saying one is better than the other and would like to make the TPI work but http://forums.corvetteforum.com/c4-t...take-swap.html
03-29-2009, 03:27 PM
#35
I can't even get the back bolt on the drivers side bottom of the runner out I have tried swivels, extensions and I don't see how to get at it without removing the wipermotor. I by no way am saying one is better than the other and would like to make the TPI work but
http://forums.corvetteforum.com/c4-t...take-swap.html
I have tried swivels, extensions and I don't see how to get at it without removing the wipermotor. I by no way am saying one is better than the other and would like to make the TPI work but http://forums.corvetteforum.com/c4-t...take-swap.html
03-29-2009, 04:54 PM
#36
Race Director
03-29-2009, 05:30 PM
#40
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http://forums.corvetteforum.com/c4-t...highlight=carb
http://forums.corvetteforum.com/c4-t...highlight=carb
http://forums.corvetteforum.com/c4-t...highlight=carb
http://forums.corvetteforum.com/c4-t...e-to-carb.html
Because the spark advance on the TPI one is controlled by the ECM
http://forums.corvetteforum.com/c4-t...highlight=carb
http://forums.corvetteforum.com/c4-t...highlight=carb
http://forums.corvetteforum.com/c4-t...e-to-carb.html
Because the spark advance on the TPI one is controlled by the ECM