340 Rebuild Help

Author Topic: 340 Rebuild Help  (Read 6315 times)

Offline asm74

  • Jr. Member
  • **
  • Posts: 307
Re: 340 Rebuild Help
« Reply #15 on: May 19, 2008 - 02:21:10 PM »
would you need a new sending unit and fuel return lines as well?
73 Challenger




Offline Chryco Psycho

  • Administrator
  • C-C.com Guru
  • *****
  • Posts: 36620
  • 70 Challenger R/T SE 70 tube Chassis Cuda now sold
Re: 340 Rebuild Help
« Reply #16 on: May 19, 2008 - 03:48:23 PM »
the sending unit will be fine but you will need to install a return fuel line for EFI

Challenger - You`ll wish You Hadn`t

Offline Carlwalski

  • C-C.com Expert
  • ********
  • Posts: 20672
Re: 340 Rebuild Help
« Reply #17 on: May 19, 2008 - 05:07:12 PM »



Thank you Neil. Sounds good, I will call Edelbrock when I get the chance to enquire.
I wish vendors would offer more technical info on their items but what can we do eh.

In regards to the fuel pump, are we able to attach it to the rear frame rear new the tank?
Or do we have to open the tank and send it away to have the pump installed in their?
1970 Dodge Challenger R/T
White, License Plate, 0A-5599
540ci Aluminium Hemi, F.A.S.T EFI
TF-727 Gear Vendor OD, Dana 60

nivvy

  • Guest
Re: 340 Rebuild Help
« Reply #18 on: May 19, 2008 - 05:15:34 PM »
mine is up on the crossmember in front of the tank inline with the fuel filter.....  :working: I will get some pics tmorrow... my car is in the shop getting an alighment.....
« Last Edit: May 19, 2008 - 05:36:03 PM by StRoKer »

Offline Carlwalski

  • C-C.com Expert
  • ********
  • Posts: 20672
Re: 340 Rebuild Help
« Reply #19 on: May 19, 2008 - 07:09:41 PM »


Thank you Stroker. :thumbsup:


Are the 308 heads also called "Magnum heads"? Talking to a guy at Spider performance, he said that they won't work with the "older" style 91+ magnum heads, not sure if this means the 308s. I couldn't get through to Edelbrock, 14 minutes @ international rates listening to their call waiting messages and advertising lol.....will try for early am tomorrow, looks like no more sleep yet again.  :-[
1970 Dodge Challenger R/T
White, License Plate, 0A-5599
540ci Aluminium Hemi, F.A.S.T EFI
TF-727 Gear Vendor OD, Dana 60

Offline Chryco Psycho

  • Administrator
  • C-C.com Guru
  • *****
  • Posts: 36620
  • 70 Challenger R/T SE 70 tube Chassis Cuda now sold
Re: 340 Rebuild Help
« Reply #20 on: May 20, 2008 - 12:29:46 AM »
the 308 is NOT a Magnum head , the intake bolts on differently on Magnum heads the 308 is the same as the 67-92 LA block heads etc
 The fuelie 440 I just built runs 2 external inline fuel pumps with a 3/8" line to each rail from a sump style pick up out of the tank , there is no need to put a pump inside the tank like the factory does

Challenger - You`ll wish You Hadn`t

nivvy

  • Guest
Re: 340 Rebuild Help
« Reply #21 on: May 20, 2008 - 05:00:02 PM »
 :picture: All -an lines and I ran a fitting right from the sending unit........ then the fuel line wraps around and runs down the frame connectors on up to the fuel regulator.....  I like it hidden :working:
« Last Edit: May 20, 2008 - 05:39:22 PM by StRoKer »

Offline Carlwalski

  • C-C.com Expert
  • ********
  • Posts: 20672
Re: 340 Rebuild Help
« Reply #22 on: May 20, 2008 - 09:43:23 PM »



That looks good Stroker, looks easy enough to do to (whew) lol.



Also, thanks Neil, that's reasurring to know. :2thumbs:
1970 Dodge Challenger R/T
White, License Plate, 0A-5599
540ci Aluminium Hemi, F.A.S.T EFI
TF-727 Gear Vendor OD, Dana 60

Offline Carlwalski

  • C-C.com Expert
  • ********
  • Posts: 20672
Re: 340 Rebuild Help
« Reply #23 on: October 17, 2008 - 03:41:08 AM »
Bumping an older thread as it's time to tackle this, only thing I'm having trouble with at the moment is headers for the 308 heads. I've had a look at tti and they don't show anything, only factory and W2 heads. At this stage we will be going for a carb on Dad's as he doesn't mind it and it'd be nice to have a classic with a carb, if he wants EFI he can drive an EFI car. His car is due at the painters in 5 weeks, then it's in our hands!! YAY :naughty:

Neil, are the W2 heads worth keeping in your opinion? He/we are not out to make the most hp.
I do have NOS 308 heads though and feel I should take advantage of them.

At this stage I'm going to go for the K56 Engle:

4458-H K-58HYD

Valve lift = .520"
Advertised Dur = 276°
Cam Lift = .347"
Dur @ .50 = 230°
Centre Lobe = 110°

Price = $155.00

Blurb: .904" Lifter profile for Hot street performance, 9 to 9-1/2 to one compression.
Moderate idle, Midrange power 2000-5800 RPM Engine: Mopar LA: 273-360 

You concur Neil?

More questions will be sure to follow......... :P
« Last Edit: October 17, 2008 - 03:45:44 AM by Carlwalski »
1970 Dodge Challenger R/T
White, License Plate, 0A-5599
540ci Aluminium Hemi, F.A.S.T EFI
TF-727 Gear Vendor OD, Dana 60

Offline Chryco Psycho

  • Administrator
  • C-C.com Guru
  • *****
  • Posts: 36620
  • 70 Challenger R/T SE 70 tube Chassis Cuda now sold
Re: 340 Rebuild Help
« Reply #24 on: October 17, 2008 - 03:47:34 AM »
The 308 heads take the "normal" headers for the X/J heads etc
I think you have all the parts for the W2 heads so yes I would think they are worth keeping but there are a number of different versdions of the W@ , not sure which you have ?

Challenger - You`ll wish You Hadn`t

Offline Carlwalski

  • C-C.com Expert
  • ********
  • Posts: 20672
Re: 340 Rebuild Help
« Reply #25 on: October 17, 2008 - 03:53:10 AM »


Thanks Neil, that was quick haha.

Yeah, unfortunately the paper work I was given don't offer and true ID specs on the heads.
All I know is they are W2 and have had extensive custom port work and had to have custom headers made.

These are the headers I'm looking at buying from tti, from what you can see in their blurb, do they cover the 308 heads?
http://www.ttiexhaust.com/Header-Small%20Block/340ABE.htm Sorry about all the newb questions..... :-[

Just trying to confirm what carb and intake and I think we are set.
Thing is we need room for the Shaker set up so that limits us. Any help is appreciated.

1970 Dodge Challenger R/T
White, License Plate, 0A-5599
540ci Aluminium Hemi, F.A.S.T EFI
TF-727 Gear Vendor OD, Dana 60

Offline Chryco Psycho

  • Administrator
  • C-C.com Guru
  • *****
  • Posts: 36620
  • 70 Challenger R/T SE 70 tube Chassis Cuda now sold
Re: 340 Rebuild Help
« Reply #26 on: October 17, 2008 - 04:29:35 AM »
those headers are perfect
I would do a split K56 intake /K58 exhaust or a K58 / K 60  the first would bew more in line with what you want fromt he build though
 use a 110 Cl with headers
 shoot a pic of the combustion chamber on the W2 heads you have , TTi does have W2 headers available
, the performer RPM may be too tall but it could fit if you use the shorter 440 shaker base , the RPM would be Ideal , I would use a Proform or Holley Hp 750

Challenger - You`ll wish You Hadn`t

Offline The Cuda Guy

  • Support Our Troops
  • Resident
  • ****
  • Posts: 3899
  • Pearl Harbor, HI
    • C-C.com
Re: 340 Rebuild Help
« Reply #27 on: October 17, 2008 - 07:24:19 PM »
Carl,

I dont know how much in love you are with a low-pro intake as you mentioned.  I have been doing a lot of research on the shaker/intake issue as I want to put one (shaker) on my cuda when I get my 440/512 but I also want to use biger heads and intake as well so in my research I have found if you go with a fiberglass shaker base and a drop plate you could most likley use an intake of your choice... within reason.  BUT... I like the weiand intake as well that Chryco mentioned.  I have it book marked on my home computer for my truck when I rebuild it.  Also with those heads, if you plan on getting them worked over I think you could go with a larger carb.   :2cents:  I hope this helps bro.  Good luck.  

:cheers:

Don 
« Last Edit: October 17, 2008 - 07:49:31 PM by The Cuda Guy »
The Cuda Guy Project is on going!

Member Since January 14, 2002

Offline Carlwalski

  • C-C.com Expert
  • ********
  • Posts: 20672
Re: 340 Rebuild Help
« Reply #28 on: October 17, 2008 - 08:57:10 PM »


Thanks Neil and Don, definitely some good stuff to research so thanks guys.  :cheers: :wave:
1970 Dodge Challenger R/T
White, License Plate, 0A-5599
540ci Aluminium Hemi, F.A.S.T EFI
TF-727 Gear Vendor OD, Dana 60

Offline Carlwalski

  • C-C.com Expert
  • ********
  • Posts: 20672
Re: 340 Rebuild Help
« Reply #29 on: October 20, 2008 - 01:53:33 AM »


Neil, just getting some info to take to my engine builder and I noticed the dur etc on the current cam is close to the Engle 56 and/or 58.
Is it worth doing being that they seem close or is the cam game like dog years, each +/- is a decent amount?

Current cam specs: Comp-Cams 20-224-4 extreme energy, 110 degree lobe centers, .488” intake valve lift, .491” exhaust valve lift, 230 degree duration @ .50” intake, 236 degree duration @ .50” exhaust. RPM operating range 1800rpm-6000rpm

Engle 56: Value Lift .504", Advertised Duration 272°, Cam Lift .336", Duration @.050" 224°, Lobe Center 110°.
.904" Lifter profile for midrange torque 9 to 1 compression street cars & trucks power from 1800-5500 RPM 

Engle 58: Value Lift .520", Advertised Duration 276°, Cam Lift .347", Duration @.050" 230°, Lobe Center 110°.
.904" Lifter profile for Hot street performance, 9 to 9-1/2 to one compression, moderate idle, Midrange power 2000-5800 RPM 

The 58 looks like it's the one that will offer greater performance gains (obviously).
What do you think the idle will be like? I don't think Dad would need/want a lumpy idle.


Thanks.  :thumbsup:
1970 Dodge Challenger R/T
White, License Plate, 0A-5599
540ci Aluminium Hemi, F.A.S.T EFI
TF-727 Gear Vendor OD, Dana 60