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Username Post: 1967 rs carb question        (Topic#349641)
sprog777 
Poster
Posts: 64

Reg: 03-27-10
02-13-18 12:39 PM - Post#2724269    

I have a 1406 edelbrock with 2701 edelbrock intake. They are mounted on a 400sbc.With the addition of long tube headers do I have to go richer on jets. And also should I use long or short water pump.Either way i'll get the high flow version with a high flow thermostat.

sprog777@yahoo.com

1979 K5 Blazer
2001 1500 z71 ext.cab
1999 Chevy Tahoe 4wd
1999 chevy z71 ext.cab
1966 Mustang coupe
1967 rs Camaro
1992 Mazda Miata
2009 ultra classic electra glide
1986 Gli


 




raycow 
Honored Member
Posts: 27664
raycow
Loc: San Francisco, CA
Reg: 11-26-02
02-13-18 04:40 PM - Post#2724294    
    In response to sprog777

  • sprog777 Said:
....should I use long or short water pump....


Use whichever pump matches the rest of the belt drive parts on the front of the engine. When you try to cross breed these pieces you can get into a nightmare that requires custom parts to get all the pulleys to line up. If it helps any, the stock setup on a 67 would have been a SWP. I think your 400 would have originally been built with a LWP. The easy way to decide is which side the alt is on. Use a short pump if on the left and long if on the right.

Sorry, but I can't offer any help with the jetting. That might be a good question to ask on the performance forum.

Ray

Those who choose an automatic transmission want transportation. Those who choose a manual transmission want to drive.


 
sprog777 
Poster
Posts: 64

Reg: 03-27-10
02-14-18 11:47 AM - Post#2724381    
    In response to raycow

well it is longer than 5inches closer to 7 but alternator is on the left. I also want to know if steam holes where drilled in stock heads and if not how did they keep the heat under control.

sprog777@yahoo.com

1979 K5 Blazer
2001 1500 z71 ext.cab
1999 Chevy Tahoe 4wd
1999 chevy z71 ext.cab
1966 Mustang coupe
1967 rs Camaro
1992 Mazda Miata
2009 ultra classic electra glide
1986 Gli


 
raycow 
Honored Member
Posts: 27664
raycow
Loc: San Francisco, CA
Reg: 11-26-02
02-14-18 10:14 PM - Post#2724445    
    In response to sprog777

If your alt is on the left AND all the belts line up satisfactorily AND you know your present pump is a long one, then a PO probably did whatever was necessary to get an acceptable fit. To be on the safe side, remove your fan and WP pulley and measure from the hub face to the pump seating surface on the block. Compare that dimension with the pump you plan to buy to find out if you will need to relocate the hub.

Stock 400 heads do have steam holes. If you want to use different heads for a performance gain or other reasons, articles are available online which instruct where and how to drill the holes.

Ray

Those who choose an automatic transmission want transportation. Those who choose a manual transmission want to drive.


 
sprog777 
Poster
Posts: 64

Reg: 03-27-10
02-15-18 08:28 AM - Post#2724463    
    In response to raycow

Thank you that is what I thought but wanted to male sure and get some expert advice

sprog777@yahoo.com

1979 K5 Blazer
2001 1500 z71 ext.cab
1999 Chevy Tahoe 4wd
1999 chevy z71 ext.cab
1966 Mustang coupe
1967 rs Camaro
1992 Mazda Miata
2009 ultra classic electra glide
1986 Gli


 
pdq67 
Member
Posts: 472

Loc: Columbia, MO, USA
Reg: 08-31-02
02-16-18 01:43 PM - Post#2724611    
    In response to raycow

Drivers side Alt. is a short water pump.

Passenger side Alt. is a long water pump.

About pulleys and such, Team Camaro should have a great big pulley matrix somewhere on the site.

pdq67



 
raycow 
Honored Member
Posts: 27664
raycow
Loc: San Francisco, CA
Reg: 11-26-02
02-16-18 03:43 PM - Post#2724622    
    In response to pdq67

  • pdq67 Said:
Drivers side Alt. is a short water pump.

Passenger side Alt. is a long water pump.....


You are correct if the engine is stock. However, the OP said he has a left (driver) side alt and a long WP. This is possible to do with modified or custom parts.

Ray

Those who choose an automatic transmission want transportation. Those who choose a manual transmission want to drive.


 
models916 
Valued Contributor
Posts: 4783

Age: 67
Loc: Addison, IL
Reg: 05-28-10
02-20-18 05:38 AM - Post#2724958    
    In response to raycow

Leave the jets alone. The springs for the metering rods may need to be changed. If you don't have an AFR gauge, you don't know if the jets will need changing till you drive it a while and check the plugs. The springs are determined by the idle vacuum in gear if it's an auto. Check the tuning guide in the manual for the carb.



 




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