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

Help cam add carb

Thread Tools
 
Search this Thread
 
Old Jan 21, 2016 | 04:55 AM
  #1  
drag racer 9's Avatar
drag racer 9
Thread Starter
Advanced
 
Joined: Mar 2013
Posts: 66
Likes: 0
Default Help cam add carb

I have an 86 Vett with a 350.
I'm thanking about for now adding headers , Putting a bigger cam in. Changing the EFI to crab & manifold, Replacing torque converter to ( Hi Stall speed).
The couple questions I have is will a manifold fit the stock heads?
Also will a Distributer work with the stock block?
I appreciate you guys trying to help me out !
Reply
Old Jan 21, 2016 | 09:51 AM
  #2  
Kevova's Avatar
Kevova
Le Mans Master
10 Year Member
Liked
Loved
Community Favorite
 
Joined: Sep 2013
Posts: 6,192
Likes: 750
From: near the thumb in the mitten
Default

It's not a big deal to change to carb. You will need fuel pressure regulator to reduce pressure to 5-7 psi. Intake needs to match year of heads. Chevrolet change center two intake bolt angle in 86/87 time frame. Changing cam should not be an issue just figure on flat tappet (non-roller). You will need a different distributor with mechanical and vacuum advance. I would put all the tpi stuff in a tote and zip tie wiring out of the way don't hack it up in case you change you mind or sell car.
Reply
Old Jan 22, 2016 | 02:20 AM
  #3  
drag racer 9's Avatar
drag racer 9
Thread Starter
Advanced
 
Joined: Mar 2013
Posts: 66
Likes: 0
Default

Originally Posted by Kevova
It's not a big deal to change to carb. You will need fuel pressure regulator to reduce pressure to 5-7 psi. Intake needs to match year of heads. Chevrolet change center two intake bolt angle in 86/87 time frame. Changing cam should not be an issue just figure on flat tappet (non-roller). You will need a different distributor with mechanical and vacuum advance. I would put all the tpi stuff in a tote and zip tie wiring out of the way don't hack it up in case you change you mind or sell car.
Thanks Buddy I built motors for my racecar before. But I am not familiar with this block with EFI with the Distributor going thought the block to the cam. I didn't know if the block were the lifter galleys are is block off But thanks for trying to help!!
Reply
Old Jan 22, 2016 | 09:17 AM
  #4  
Kevova's Avatar
Kevova
Le Mans Master
10 Year Member
Liked
Loved
Community Favorite
 
Joined: Sep 2013
Posts: 6,192
Likes: 750
From: near the thumb in the mitten
Default

There should be a standard SBC engine with a 1 piece rear seal in this car. All the typical SBC stuff applies. If it has the stock "Iron Heads" I'd lose them for something better.
Reply
Old Jan 22, 2016 | 09:21 AM
  #5  
drag racer 9's Avatar
drag racer 9
Thread Starter
Advanced
 
Joined: Mar 2013
Posts: 66
Likes: 0
Default

Originally Posted by Kevova
There should be a standard SBC engine with a 1 piece rear seal in this car. All the typical SBC stuff applies. If it has the stock "Iron Heads" I'd lose them for something better.
I heard the same thing about the heads. Ports and the chambers are small. I have a set of Brodex heads I'll put them on THANKS for the help
Reply
Old Jan 22, 2016 | 02:04 PM
  #6  
L98Justin's Avatar
L98Justin
Pro
 
Joined: Apr 2014
Posts: 719
Likes: 67
From: Helotes Texas
Default

I went carb on mine used a weiand manifold with my 113 heads and a generic vac/mech distibutor... the fuel system is apart right now for my fuel cell that i'll be putting in within a week or so
Reply
Old Jan 22, 2016 | 11:29 PM
  #7  
drag racer 9's Avatar
drag racer 9
Thread Starter
Advanced
 
Joined: Mar 2013
Posts: 66
Likes: 0
Default

Originally Posted by L98Justin
I went carb on mine used a weiand manifold with my 113 heads and a generic vac/mech distibutor... the fuel system is apart right now for my fuel cell that i'll be putting in within a week or so
Thanks Justin you said fuel cell where you putting it? Can't you just modify the tank?
Reply
Old Jan 23, 2016 | 01:33 AM
  #8  
Hot Rod Roy's Avatar
Hot Rod Roy
Safety Car
15 Year Member
 
Joined: Sep 2004
Posts: 3,953
Likes: 550
From: Mission Viejo CA
Default

Originally Posted by drag racer 9
Thanks Buddy I built motors for my racecar before. But I am not familiar with this block with the Distributor going thought the block to the cam.
Chevrolet has been building these "small block" engines like this since 1955.

Reply
Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

10 Ugly Corvettes That We Still Kinda Love

 Joe Kucinski
story-1

Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

 Brett Foote
story-2

10 Things Every Corvette Owner Needs (2026 Edition)

 Michael S. Palmer
story-3

8 Most "Only Corvette Owners Understand" Quirks and Problems

 Pouria Savadkouei
story-4

10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

 Joe Kucinski
story-5

How Much Horsepower Every Corvette Engine "LOST" in 1972

 Joe Kucinski
story-6

Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

 Michael S. Palmer
story-7

Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

 Joe Kucinski
story-8

150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

 Joe Kucinski
story-9

8 Coolest Corvette Pace Cars (and Replicas) of All Time

 Verdad Gallardo
Old Jan 23, 2016 | 09:04 AM
  #9  
L98Justin's Avatar
L98Justin
Pro
 
Joined: Apr 2014
Posts: 719
Likes: 67
From: Helotes Texas
Default

Originally Posted by drag racer 9
Thanks Justin you said fuel cell where you putting it? Can't you just modify the tank?
I used the stock tank for awhile, with a holley blue pump but i track it and it doesn't have a sump also the pump i use is a better pusher than it is a puller and it's kinda hard too feed the pump from up top. I'm mounting a 10 Gallon fuel cell in the stock location and using most of the stock fuel lines as well
Reply
Old Jan 23, 2016 | 04:14 PM
  #10  
drag racer 9's Avatar
drag racer 9
Thread Starter
Advanced
 
Joined: Mar 2013
Posts: 66
Likes: 0
Default

Originally Posted by L98Justin
I used the stock tank for awhile, with a holley blue pump but i track it and it doesn't have a sump also the pump i use is a better pusher than it is a puller and it's kinda hard too feed the pump from up top. I'm mounting a 10 Gallon fuel cell in the stock location and using most of the stock fuel lines as well
Hay Justin With my racecar. I have a 72 Vega with a 427 from running down the track. You need 9 lbs. of fuel pressure going though the traps. Good luck Buddy
Reply
Old Jan 24, 2016 | 07:59 PM
  #11  
frankinvett84's Avatar
frankinvett84
Racer
 
Joined: Nov 2013
Posts: 338
Likes: 8
From: South NewJersey
Default

I would suggest a return fuel system. I have never had a fuel overheating problem like some others have had. As far as a manifold is concerned the only thing you need to make sure is to get a manifold for vortec heads if you have them and of not dont. here is a pic of mine i was evev able to use my original air cleaner housing,modified of course





Reply
Old Jan 24, 2016 | 10:07 PM
  #12  
Hot Rod Roy's Avatar
Hot Rod Roy
Safety Car
15 Year Member
 
Joined: Sep 2004
Posts: 3,953
Likes: 550
From: Mission Viejo CA
Default

Frankinvette, that's an interesting conversion! How do you put oil into your engine? Or maybe you've fixed that.

Reply
Old Jan 25, 2016 | 04:52 AM
  #13  
drag racer 9's Avatar
drag racer 9
Thread Starter
Advanced
 
Joined: Mar 2013
Posts: 66
Likes: 0
Default

Originally Posted by frankinvett84
I would suggest a return fuel system. I have never had a fuel overheating problem like some others have had. As far as a manifold is concerned the only thing you need to make sure is to get a manifold for vortec heads if you have them and of not dont. here is a pic of mine i was evev able to use my original air cleaner housing,modified of course





Very nice Buddy I like it a lot very clean Good Luck with it!!
Reply
Old Jan 25, 2016 | 04:57 AM
  #14  
drag racer 9's Avatar
drag racer 9
Thread Starter
Advanced
 
Joined: Mar 2013
Posts: 66
Likes: 0
Default

Originally Posted by Hot Rod Roy
Frankinvette, that's an interesting conversion! How do you put oil into your engine? Or maybe you've fixed that.

They bin making valve covers to put oil in since 1955
Reply
Old Jan 25, 2016 | 03:45 PM
  #15  
Hot Rod Roy's Avatar
Hot Rod Roy
Safety Car
15 Year Member
 
Joined: Sep 2004
Posts: 3,953
Likes: 550
From: Mission Viejo CA
Default

Originally Posted by drag racer 9
They bin making valve covers to put oil in since 1955
Oh, so now we're throwing insults?

When I built my engine, I traded sides with my rocker covers to put the oil fill port on the drivers side, to stay away from that fragile high pressure switch on my a/c compressor (which Frankinvette's not using anyway). But to put the oil filler under the air cleaner looks to be a little inconvenient!




Last edited by Hot Rod Roy; Jan 25, 2016 at 03:55 PM.
Reply
Old Jan 26, 2016 | 07:26 PM
  #16  
frankinvett84's Avatar
frankinvett84
Racer
 
Joined: Nov 2013
Posts: 338
Likes: 8
From: South NewJersey
Default

Thanks the pics posted are a bit dated.( you can see there is a strap holding up the back of the engine while the trans was being built.) I am VERY happy with build so far.It has a forged bottom end Dart heads and a custom ground Lunati cam. the carb is a RaceDemon with no choke. I though that might be a problem but i ran it the day before the snow here in NJ and just feathered the accelerator for about a minute and away I went. as Im typing I am dropping my dana36 to replace it with a 44 that i found here on the forum it already has 4.11 gears it and matched up to a 3200 converter it should be fun at the green lights. I just hope to show you it only matters what your goals are. You can do just about anything with these cars they are reasonably light, handle GREAT! and with some effort, ingenuity,and this forum. Fast and fun.
Reply
Old Jan 29, 2016 | 08:52 PM
  #17  
project C4's Avatar
project C4
Pro
20 Year Member
Liked
Loved
Community Favorite
 
Joined: Apr 2004
Posts: 621
Likes: 37
From: Texas
Default

Originally Posted by drag racer 9
Hay Justin With my racecar. I have a 72 Vega with a 427 from running down the track. You need 9 lbs. of fuel pressure going though the traps. Good luck Buddy
I have been running a Mallory 140 mounted underneath the stock fuel tank with the in tank fuel pump removed and replaced with a pickup tube. Been working flawlessly for a good while now.
Attached Images  

Last edited by project C4; Jan 29, 2016 at 09:01 PM.
Reply

Get notified of new replies

To Help cam add carb

Old Jan 29, 2016 | 09:07 PM
  #18  
project C4's Avatar
project C4
Pro
20 Year Member
Liked
Loved
Community Favorite
 
Joined: Apr 2004
Posts: 621
Likes: 37
From: Texas
Default

Originally Posted by Kevova
It's not a big deal to change to carb. You will need fuel pressure regulator to reduce pressure to 5-7 psi. Intake needs to match year of heads. Chevrolet change center two intake bolt angle in 86/87 time frame. Changing cam should not be an issue just figure on flat tappet (non-roller). You will need a different distributor with mechanical and vacuum advance. I would put all the tpi stuff in a tote and zip tie wiring out of the way don't hack it up in case you change you mind or sell car.
Just a fyi... the two center intake bolt angles did not change on corvette motors
Reply
Old Jan 30, 2016 | 12:50 AM
  #19  
drag racer 9's Avatar
drag racer 9
Thread Starter
Advanced
 
Joined: Mar 2013
Posts: 66
Likes: 0
Default

Originally Posted by drag racer 9
They bin making valve covers to put oil in since 1955
Hot rod Roy just havin fun with you that's all
Reply
Old Jan 30, 2016 | 09:01 AM
  #20  
frankinvett84's Avatar
frankinvett84
Racer
 
Joined: Nov 2013
Posts: 338
Likes: 8
From: South NewJersey
Default

Project C4 ,Very nice and clean engine compartment.
I would love to pull the climate control but I still like using 'em, even if its not very often. I hope to have my a/c hooked back up by spring.Is your a track car b/c i see the wipers r also gone.Once again very clean look.
Reply



All times are GMT -4. The time now is 01:15 AM.

story-0
10 Ugly Corvettes That We Still Kinda Love

Slideshow: 10 ugly Corvettes that we still kinda love.

By Joe Kucinski | 2026-06-03 10:34:17


VIEW MORE
story-1
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

A lot of money has changed hands at the online auction house over the years.

By Brett Foote | 2026-06-03 10:21:50


VIEW MORE
story-2
10 Things Every Corvette Owner Needs (2026 Edition)

Slideshow: 10 great gifts Corvette enthusiasts actually want for Father's Day!

By Michael S. Palmer | 2026-06-03 15:43:40


VIEW MORE
story-3
8 Most "Only Corvette Owners Understand" Quirks and Problems

Slideshow: These are the quirks, annoyances, and oddly lovable problems that every Corvette owner eventually learns to live with.

By Pouria Savadkouei | 2026-05-28 09:31:39


VIEW MORE
story-4
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

Slideshow: 10 reasons why the C6 Z06 is still a performance benchmark after 20 years.

By Joe Kucinski | 2026-05-27 17:20:09


VIEW MORE
story-5
How Much Horsepower Every Corvette Engine "LOST" in 1972

Slideshow: How much horsepower every Corvette engine lost in 1972.

By Joe Kucinski | 2026-05-27 16:54:53


VIEW MORE
story-6
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

Slideshow: How to Protect A Convertible Top: 10 DOs & DON'Ts

By Michael S. Palmer | 2026-04-03 00:00:00


VIEW MORE
story-7
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

Slideshow: The 10 most explosive Corvettes ever built based on power-to-weight ratio.

By Joe Kucinski | 2026-05-20 07:23:03


VIEW MORE
story-8
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

Slideshow: From C1 to C8 we compare every Corvette generation by the numbers.

By Joe Kucinski | 2026-05-12 16:54:12


VIEW MORE
story-9
8 Coolest Corvette Pace Cars (and Replicas) of All Time

Slideshow: Some Corvette pace cars became collectible legends, while others perfectly captured the look and attitude of their era.

By Verdad Gallardo | 2026-05-11 09:50:51


VIEW MORE