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#1 vega

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Posted 11 March 2010 - 07:17 AM

Just a quick question, for the first gen sbc swap in a s30; are there long tube headers that will fit not modifications (cutting etc)? If so which ones would be the best for more hp less tq?

Edited by vega, 11 March 2010 - 07:18 AM.

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#2 jay260z

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Posted 12 March 2010 - 06:02 PM

As far as i konw ther isnt any that fit very well in the JTR mounting setup, I have a set of long tubes on the car now but i had to tweak them to fit. They hang a little low also so if your wanting to lower the car and drive it on some rougher roads the exhaust will scrape.

The headers i am using are the Sandersons C32 heres the url

1974 260z 2+2 383SBC TH350 r200 3.90:1  235/60r15 Drag Radials 

 

10.93 @ 123 so far with more left in it.

 


#3 nullbound

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Posted 12 March 2010 - 06:19 PM

Do a search for s&s headers. They hang low, though, as mentioned by jay.

#4 570 Z

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Posted 24 March 2010 - 10:51 AM

jay260z what mods did you have to do with the c32 headers and how do you like them overall? Any pics?

#5 jay260z

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Posted 02 April 2010 - 10:01 AM

jay260z what mods did you have to do with the c32 headers and how do you like them overall? Any pics?


sorry for the delay ive been really busy and lost track.

The headers kinda wanted to point towards the passanger side so i had to pull the collectors towards the drivers side about 1" with a come-a-long and a tow strap. ill try and get some pics up if i can find my camera. I am using a t56 out of a lt1 car so the clutch master cyl hangs down right where the exhaust needs to be on the drivers side so that header may not need to be moved on your setup.

1974 260z 2+2 383SBC TH350 r200 3.90:1  235/60r15 Drag Radials 

 

10.93 @ 123 so far with more left in it.

 


#6 355Z

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Posted 07 July 2010 - 02:23 PM

sorry for the delay ive been really busy and lost track.

The headers kinda wanted to point towards the passanger side so i had to pull the collectors towards the drivers side about 1" with a come-a-long and a tow strap. ill try and get some pics up if i can find my camera. I am using a t56 out of a lt1 car so the clutch master cyl hangs down right where the exhaust needs to be on the drivers side so that header may not need to be moved on your setup.


Would the C33 with the 1 3/4 primary tubes fit any worse in your estimation?

Edited by 355Z, 07 July 2010 - 02:23 PM.


#7 jay260z

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Posted 11 July 2010 - 12:41 PM

i doubt they will clear the steering shaft

1974 260z 2+2 383SBC TH350 r200 3.90:1  235/60r15 Drag Radials 

 

10.93 @ 123 so far with more left in it.

 


#8 LLave

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Posted 12 July 2010 - 08:15 AM

I would love to see someone dyno their car with shorties, then long tubes and measure the gain. My guess is that it would be a very hard earned and expensive couple HP.

#9 355Z

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Posted 13 July 2010 - 04:21 PM

I would love to see someone dyno their car with shorties, then long tubes and measure the gain. My guess is that it would be a very hard earned and expensive couple HP.


It's a common magazine comparo. Typically in the 10-15 hp range.

#10 Pyro

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Posted 15 July 2010 - 05:37 AM

hp gains with long tubes versus shorties will depend on the engine build. the more radical the build, the more long tubes make over block huggers.

I have seen a header comparison using a 350 with a compcam 292H (244/244 at 0.050). The long tubes made 75 more hp over cast iron log manifolds and 35 more than the block huggers.

I used a set of hooker headers made for a datsun V8 conversion. But took lots of work to get them to fit in a JTR engine position.

#11 355Z

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Posted 19 July 2010 - 02:12 PM

i doubt they will clear the steering shaft


I'll have to do some modifications then. Ordered them late last Tuesday, were on my door Friday! I'll take some pics and post them. I currently have some S&S 1 3/4 headers, which have to come off and be returned to a previous owner. I'll let everyone know how they fit or whats needed to make them fit.

Edited by 355Z, 19 July 2010 - 02:13 PM.


#12 355Z

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Posted 22 July 2010 - 09:31 PM

They FIT :) Put my 1 3/4" Sanderson Long tubes in tonight. Minor dimpling on the drivers side to clear the steering shaft, and they barely touch the JTR engine mount. driver side goes in with removal of the shaft. Passenger side goes in with the removal of the engine mount. Collectors come out about half way betwenn the bell housing and the frame rail, just right, and easily clear the floor. Sanderson doesn't say they they fit the 280Z in the add, but they do. They were $405 shipped to my door. I am very happy and the quality is about the same or a little better than the S&S 1 3/4 tubes. Took about 2.5 hours for just the headers and the clearance with a lift. forgot to check spark plug clearance since I run angle plug heads, but I'm sure they will since they advertise that they will clear. Pics to follow.

Edited by 355Z, 22 July 2010 - 09:44 PM.


#13 rx8ss

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Posted 27 July 2010 - 05:46 AM

Some pics of the header install. It went amazingly well considering that the headers are not 280z specific. Great fit, looks good.

Attached Files


Just becuause you can does not mean you should

1977 280z, 350 sbc, th350, 11.8 1/4 mile @ 114 mph
1995 Z28, LT1, 4L60E, 12.8 1/4 mile @ 108 mph

#14 rx8ss

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Posted 27 July 2010 - 05:47 AM

More

Attached Files


Just becuause you can does not mean you should

1977 280z, 350 sbc, th350, 11.8 1/4 mile @ 114 mph
1995 Z28, LT1, 4L60E, 12.8 1/4 mile @ 108 mph

#15 rx8ss

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Posted 27 July 2010 - 05:48 AM

Just a couple of more.

Attached Files


Just becuause you can does not mean you should

1977 280z, 350 sbc, th350, 11.8 1/4 mile @ 114 mph
1995 Z28, LT1, 4L60E, 12.8 1/4 mile @ 108 mph

#16 355Z

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Posted 27 July 2010 - 07:19 AM

Thanks Ricci. This pic is of the drivers side from underneath the vehicle. It shows the header behind the steering shaft; The header primary tube on the left is the one we had to dimple to clear the shaft. The upper right corner of the JTR adaptor also touches the same tube(The bolt head showing behind the steering shaft is the corner in question) Grind a little off of that corner and you will be set.

Hope this help those who are looking to put 1 3/4 primary tube headers on their 240-280Zs

Attached Files


Edited by 355Z, 27 July 2010 - 07:23 AM.


#17 355Z

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Posted 28 July 2010 - 11:09 PM

For those who have asked the exact headers ordered were the C33AP and the heads that are on the car are angle plug Edelbrock Performer RPMs.

#18 jay260z

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Posted 26 August 2010 - 11:45 PM

Mine fit about the same but i didnt dimple the header for the steering shaft but im going to take it off and do it anyways, it rubs from time to time.

1974 260z 2+2 383SBC TH350 r200 3.90:1  235/60r15 Drag Radials 

 

10.93 @ 123 so far with more left in it.

 


#19 Boy from Oz

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Posted 09 September 2010 - 05:36 PM

Here are some longtubes made up in Oz. It's the same place who will be doing my LS1 in a couple of weeks.
http://www.bestmuffl...datsun_240z.htm

#20 oakland240

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Posted 14 June 2011 - 01:40 PM

I am thinking about ordering the same headers, I have a '71 240z, does anyone know if the clearances should be the same? Or has anyone installed the 33ap headers on a 240? very helpful before I spend the $400.

Thanks!




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