Eddy Thunder AVS 800 Questions

[BananaDan]

I'm going to replace my Holley 750 DP (mech. sec./man. choke) with an Eddy Thunder AVS 800 #1813 (vac. sec./elec. choke) and have some questions:

1. I don't have the stock original pump to carb fuel line.  I am prepared to get one from Fine Lines that they make as a 'stock' replacement.  Will a stock line or a stock replacement fit the Thunders as if it were an original Carter AVS up there?  (Not regarding the fittings, regarding the measurements and will they line up properly?)

2. I have 3/8" line for the feed from the tank up to the pump ('hemi' pump) and 5/16" from the pump to the seperator and then onwards to the carb (Fabulous Fabrications custom Holley DP feed kit).  I'm not going to change the front to rear line, but is 5/16" still an appropriate pump to carb feed line size for a Thunder AVS 800?

3. I have read all of the threads on this site about the Thunder AVS 800 and read that it comes with a setup that calls for rubber lines into the carb.  I want to fit a stock replacement steel line into it, and people have said to re-use the original fitting from their old AVS with a reducer.  Since I don't have those, what do I need to buy to fit the stock replacement steel pump-to-carb line into the new Thunder AVS?  Can I buy those fittings?

Dan

[tan top]

yes got a thunder 800 AVS  on mine  , all the carter fittings fit  ,
i put a spare OEM carter fitting on my 800 thunder  have 3/8 line to pump  , but factory 5/16 to carb ,  

http://www.edelbrock.com/automotive_new/mc/carbs_acc/access_fuel_filters.shtml

http://chucker54.stores.yahoo.net/cainfi.html

http://chucker54.stores.yahoo.net/cafuliki.html

http://chucker54.stores.yahoo.net/edwipoalfufi.html

[BananaDan]

yes got a thunder 800 AVS  on mine  , all the carter fittings fit  ,
i put a spare OEM carter fitting on my 800 thunder  have 3/8 line to pump  , but factory 5/16 to carb ,  

http://www.edelbrock.com/automotive_new/mc/carbs_acc/access_fuel_filters.shtml

http://chucker54.stores.yahoo.net/cainfi.html

http://chucker54.stores.yahoo.net/cafuliki.html

http://chucker54.stores.yahoo.net/edwipoalfufi.html

Thanks TanTop, I have some more questions.

1. With the first link you provided, that steel line comes down to the front of the carb.  I thought the factory seperator-to-carb line goes all of the way up to the carb inlet itself?  Is this an option I have, or is this needed and I run the factory 5/16" line to this piece?

2. The second link shows 3 fittings.  Any idea which one I need?  The first one is a hose barb, so I'm thinking not that one.  The middle one looks right but has a 3/8" female fitting.  Do I get that and find a 3/8" to 5/16" reducer?  Or does one exist with a 5/16" female opening?  The right one says it's a reducer, but to 1/4" NPT.  Is 1/4" NPT the same as the 5/16" fuel line fitting?

3. Should the reducer be a 90-degree one like the one in the second link or a straight one?

4. The third and fourth links look like additional options for aftermarket fuel feed lines that I wouldn't need, correct?  Do you feed your Thunder AVS 800 with a single feed, or a dual feed?

Would you be able to post some pictures of your fuel line setup, from the seperator up to the carb inlet showing the fittings and connections?

Thanks for helping me sort this out!

Dan

[tan top]

the links i posted to give you some idea on what available  ,   i'm only running a factory single feed  5/16", as the current motor combination  i have in there now is nothing radical  , is more for street ,cruse stuff ,  only  plonked the 800AVS ( was saving for the stroker i was building) on as the original carter started acting up again (choke prob)  ,   then swaped in another cam  & the motor ran good so left it ,
the links i sent are only to show what available ,
sorry  i forget whats the motor &  intake  ? with a eldelbrock thunder  can use all the stock OEM lines  might need a tiny tweek

[BananaDan]

Does anyone know if this is the fitting I would need to adapt a stock replacement 5/16" fuel line to a Thunder AVS 800 carb?  I called YO and they say that it is for a 5/16" line and fits all Carter AFB/AVS/Thermoquad carburetors.  I'm thinking this is the one.  The price sucks, but I haven't been able to find this fitting anywhere else.

http://www.yearone.com/serverfiles/fbshopmain2.asp?pid=AF440&hid=114AR16113&cat=1&trk=12&searchid=5388149

Dan

[tan top]

Does anyone know if this is the fitting I would need to adapt a stock replacement 5/16" fuel line to a Thunder AVS 800 carb?  I called YO and they say that it is for a 5/16" line and fits all Carter AFB/AVS/Thermoquad carburetors.  I'm thinking this is the one.  The price sucks, but I haven't been able to find this fitting anywhere else.

http://www.yearone.com/serverfiles/fbshopmain2.asp?pid=AF440&hid=114AR16113&cat=1&trk=12&searchid=5388149

Dan

yes thats the one Dan  , forgot about yearone selling them

[BananaDan]

Thanks TT.

How about this one, to avoid Year One's raping and pillaging prices?  It doesn't say AVS, but the measurements look correct.

http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&item=270726150960

Dan

[tan top]

Thanks TT.

How about this one, to avoid Year One's raping and pillaging prices?  It doesn't say AVS, but the measurements look correct.

http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&item=270726150960

Dan

hmmm the threaded part  that screws into the carburettor  in the picture looks a little  long   but not sure i could be forgetting   i'll take it out of my original AVS tomorrow or the weeked & have a look  
not sure how much thread is in a thunder top plate !

[tan top]

ok just had a look  the original has 1 1/2 turns less thread   & same on the thunder fitting ,  the original has a gauze filiter also fitted to the end  , not that it matters  if your running a inline filter  ,    think that  fitting will be ok    would of thought an AFB  fitting would have the same as a AVS 

[BananaDan]

I think I'm going to vomit and get the fitting from Year One.  Like you said, the threads look correct on that one in terms of length (turns).

Dan

[tan top]

I think I'm going to vomit and get the fitting from Year One.  Like you said, the threads look correct on that one in terms of length (turns).

Dan

yeah seems steep though , just looked at jims Auto parts NJ ( dont recomend buying from him )  makes year one shipping chargers looks well cheap    no joke  :

but they list that fitting  , for $25   & say it does  for an AFB also  

http://www.jimsautoparts.com/fuelpart.htm


might be worth getting that fitting from Ebay  ,  how far in the thunder top does the thread go ?  i'm  not in a position to look at mine at the moment  

[BananaDan]

I don't know, I haven't bought mine yet which is why I'm fishing around for info from people that may already have gone through what I'm embarking on.

Dan

[firefighter3931]

Not trying to discourage you but there's other places i would be spending money. 

A 750dp'er is not too much carb for a mild 440 and once it's dialed in you'll be happier than a Pig in Poop 



Ron

[BananaDan]

Maybe that's true Ron?  I'm going off of what I've been told by my mechanic and a speed shop that I intend to take her to when she's running again to get dialed-in properly.   They are Mopar guys and my mechanic is a Chevy guy.  My mechanic told me when he was working on the vacuum issues that one of my problems is that I have a vacuum advanced distributor and that doesn't fit with a mechanical secondary DP'er like I have.  He said I should either have a vacuum secondary carb or a mechanical advanced distributor.  Based on that comment, and speaking with the speed shop on the phone, they said the AVS 800 would be a good fit for my engine.  Are they right?

Also, she revs like crap and I can't break the tires from a dead stop.  She only has 200 miles on her since the rebuild so I have been taking it easy on her, but I tried once or twice to do a small burnout and no go.  The acceleration sucks also.  Before the rebuild she would pin my head back in the seat but not now.  Maybe my mechanic doesn't know how to setup the distributor, timing and advance properly since he's a Chevy guy?

Dan

[firefighter3931]

I've tuned many over the years and you'd be surprised how much some of them have been out of whack. No disrespect to your chevy mechanic but he doesn't know much about tuning based on the comments you made. 

It's time for Dan to go to school  No need to rely on others to tune your baby once you have the knowledge.   

Here is an outstanding tuning video....it's the best money you will ever ever spend and all aspects of tuning/machining/engine building are explained in great detail with excellent hands on tutorials. I've recommended Wayne's Supertuning DVD to several members and all have had positive comments. Do yourself a favor and order it up & start learning. It's not rocket science....mostly common sense. 

http://www.dodgecharger.com/forum/index.php/topic,62100.0.html



Ron

[BananaDan]

Thanks Ron.  I do hope to learn to tune her myself, I just don't know for now.  I'll check the DVD out.

Dan

[gtx6970]

Dan,
I've got a used one out of an old  AFB, send me your address  if you use it it's yours, if you don't send it back

[BananaDan]

Dan,
I've got a used one out of an old  AFB, send me your address  if you use it it's yours, if you don't send it back

Thanks Bill!  I'll definitely send it back if I end up not needing it.

Dan

[kamkuda]

I've tuned many over the years and you'd be surprised how much some of them have been out of whack. No disrespect to your chevy mechanic but he doesn't know much about tuning based on the comments you made.  

It's time for Dan to go to school   No need to rely on others to tune your baby once you have the knowledge.  

Here is an outstanding tuning video....it's the best money you will ever ever spend and all aspects of tuning/machining/engine building are explained in great detail with excellent hands on tutorials. I've recommended Wayne's Supertuning DVD to several members and all have had positive comments. Do yourself a favor and order it up & start learning. It's not rocket science....mostly common sense.  

http://www.dodgecharger.com/forum/index.php/topic,62100.0.html



Ron

Sweet Got to order me that boook as well.  Thanks for the link Ronald

[BananaDan]

I found the DVD Ron mentioned on Amazon.com, it's already on it's way to me.

Dan

[tan top]

forgot  to mention BD   , you will need the mopar linkage adapter to run a thunder  ,

http://store.edelbrock.com/1843chryslerthrottleleveradapter.aspx

[Patronus]

Im wondering, how is it that your mechanic thinks a double-pumper carb won't work with a vacuum advance distributer? 
I think its time for a new mechanic.

[BananaDan]

I don't know, and maybe I'm not remembering 100% and/or not relaying properly but he had issues getting a reasonable amount of manifold vacuum and I have idling issues.  Either way, this decision is now on hold, I am not making this carb change for sure.  I ended up reuniting with an old friend that is a mechanic and has a 70 Fury and he is going to help me out and take a look when I'm done with my interior resto.  All of his comments are in-line with what Ron has been saying, about keeping the carb, making the cam work and changing my converter out to a bigger one.  We'll see in 4-6 weeks, I should have her buttoned up and running by then again and I'll let you all know what I end up doing.

Ron,
Quick question.  If I were to change my converter, would you recommend something around 2500 stall, or closer to 3000 with my current cam?  The Isky spec sheet for the Mega 280 Hydraulic states an RPM range starting point of 2500. I don't know if that means to get 2500 stall, or a bigger one?

Dan