Talk to me about V8 FB's...

P71 · 08-29-2008, 06:58 PM

No, not my red one (which is being put back together as we speak). I found a hardtop manual-everything S model FB for dirt cheap (blown motor) and ideas starting brewing...

I have an AMC 401 V8 and a T-5 with the AMC bellhousing and input shaft here. Also a T-5 driveshaft and a 150-shot nitrous kit.

I'm thinking buy the S, drop in the 401/5-Speed, swap out the rear end and front brakes (5-lug drag stuff), and go for a wheel-standing drag car.

I'd still have my 12A'd GSL so

Sooooo, what's it like? OK to swap? OK to work on? What kind of issues did you run into? HOW FAST ARE THEY?

For the record, the 401 should be 500HP/600TQ before the nitrous...

josh18_2k · 08-30-2008, 01:00 PM

all i can say is plan on swapping in a ford rearend..
thats a buttload of power!

i guess call grannies and ask them everything. i doubt you'll find anyone over here thats done it.

Whizbang · 09-03-2008, 08:53 AM

i know 1:4 power to weight ratios sound great, but can you even USE that much power without having spend X amount of dollars? Probably not.

josh18_2k · 09-03-2008, 04:57 PM

mike doesnt care. he can barely 'use' the power in his cop car lol
(i saw those trails of smoke from your tires after every turn...)

P71 · 09-03-2008, 10:35 PM

I use all sorts of power! Most of it never hits the ground

I'm an old-school drag racer and have driven lots of slick-equipped very quick drag cars. I've always wanted one of my own, and I have the engine, I just need a platform.

And Josh will see just how much 105BHP hurts this weekend, I'm gonna whip up on him! (PLEASE be a tight course, PLEASE!!!!)

aussiesmg · 01-04-2009, 08:59 PM

Are you only going to drag race her or do you want to track her as well?

NoDOHC · 01-07-2009, 11:11 PM

The solid rear axle should be your friend (not the stock axle, just the configuration).
I have seen v8s in FBs before (they fit ok) but I am not familiar with AMC engines.

reaper · 12-09-2009, 01:13 AM

give grannysspeedshop.com a try. thats who i'm going through for my sbf conversion

RotorDad · 12-23-2009, 09:21 PM

Interesting never seen anyone do a AMC 401, love to see the end result. Good luck with the project. A Ford 9" has many gearing options & is damn strong, the 8.8" are good rears as well.

Rogue_Wulff · 12-29-2009, 05:21 PM

Almost hate to admit it, but I've been contemplating doing a SBF swap in my SE chassis. I've even gone to the extent of reading of reading thru the granny's website. Seems pretty straight forward. Even their 8.8 Ford rearend in it's basic form would be a simple swap, since it's designed to use SE rear brakes.
Since I have a total of 3 1st gens, having one converted to a SBF wouldn't be out of line, much......

Now if I could just convince myself of that last bit.

reaper · 02-26-2010, 12:49 AM

of coarse it wouldn't be out of line!
do it. document it. post it. provide more knowledge for those who are wanting the same thing.

its like doing a favore for the 7 community

Whizbang · 02-26-2010, 02:40 AM

im tinkering with the idea for a daily driver...

Garfinkles Motor Works · 01-21-2011, 12:55 AM

I built a 401 roller motor for a customer and put it in his cj5 jeep .It was strong running but large in size,heavy. I would want a light weight high rpm v8 in my FB .I am slowly putting a FD twin turbo in a gslse now .I will sell it at any stage if someone wants to finish it . I understand you need to use the motor you have for the swap.Be sure the motor will fit before getting to far along .If it works out the torque will be great fun .

08-29-2008, 06:58 PM	#1
P71 RCC Contributor Join Date: Feb 2008 Location: WA State Posts: 651 Rep Power: 18	Talk to me about V8 FB's... No, not my red one (which is being put back together as we speak). I found a hardtop manual-everything S model FB for dirt cheap (blown motor) and ideas starting brewing... I have an AMC 401 V8 and a T-5 with the AMC bellhousing and input shaft here. Also a T-5 driveshaft and a 150-shot nitrous kit. I'm thinking buy the S, drop in the 401/5-Speed, swap out the rear end and front brakes (5-lug drag stuff), and go for a wheel-standing drag car. I'd still have my 12A'd GSL so Sooooo, what's it like? OK to swap? OK to work on? What kind of issues did you run into? HOW FAST ARE THEY? For the record, the 401 should be 500HP/600TQ before the nitrous... __________________ Michael Pinto 2008 PDXCGP Drag Racing Season Champion 83 RX-7 GSL; 12A/5-Speed, Red/Red; 100% Stock - 16.072@83.39 01 CV Police Interceptor; 4.6 SOHC V8/4R70W, Dk Blue/Grey; K&N FIPK/RP Oil/Optima/Superchips/Flowmaster 40's/2.5" cat-back - 14.854@92.37 Read my Rx-7 Build Thread! http://rotarycarclub.com/rotary_foru...ed=1#post70955 Get on the new RCC 1/4 Mile ET List! http://www.rotarycarclub.com/rotary_...read.php?t=368 Vote for the ROTM! http://rotarycarclub.com/rotary_foru...play.php?f=125

08-30-2008, 01:00 PM	#2
josh18_2k Rotary Fanatic Join Date: Feb 2008 Location: Gresham, OR Posts: 473 Rep Power: 18	all i can say is plan on swapping in a ford rearend.. thats a buttload of power! i guess call grannies and ask them everything. i doubt you'll find anyone over here thats done it. __________________

09-03-2008, 08:53 AM	#3
Whizbang Respecognize! Join Date: Jul 2008 Location: Δx = ħ/2Δp Posts: 3,190 Rep Power: 20	i know 1:4 power to weight ratios sound great, but can you even USE that much power without having spend X amount of dollars? Probably not. __________________ For current updates and event coverage check out Follow on Twitter! @WhizbangRally Whizbang Rally's Webpage \| Facebook

09-03-2008, 04:57 PM	#4
josh18_2k Rotary Fanatic Join Date: Feb 2008 Location: Gresham, OR Posts: 473 Rep Power: 18	mike doesnt care. he can barely 'use' the power in his cop car lol (i saw those trails of smoke from your tires after every turn...) __________________

09-03-2008, 10:35 PM	#5
P71 RCC Contributor Join Date: Feb 2008 Location: WA State Posts: 651 Rep Power: 18	I use all sorts of power! Most of it never hits the ground I'm an old-school drag racer and have driven lots of slick-equipped very quick drag cars. I've always wanted one of my own, and I have the engine, I just need a platform. And Josh will see just how much 105BHP hurts this weekend, I'm gonna whip up on him! (PLEASE be a tight course, PLEASE!!!!) __________________ Michael Pinto 2008 PDXCGP Drag Racing Season Champion 83 RX-7 GSL; 12A/5-Speed, Red/Red; 100% Stock - 16.072@83.39 01 CV Police Interceptor; 4.6 SOHC V8/4R70W, Dk Blue/Grey; K&N FIPK/RP Oil/Optima/Superchips/Flowmaster 40's/2.5" cat-back - 14.854@92.37 Read my Rx-7 Build Thread! http://rotarycarclub.com/rotary_foru...ed=1#post70955 Get on the new RCC 1/4 Mile ET List! http://www.rotarycarclub.com/rotary_...read.php?t=368 Vote for the ROTM! http://rotarycarclub.com/rotary_foru...play.php?f=125

01-04-2009, 08:59 PM	#6
aussiesmg Rotary Fan in Training Join Date: Feb 2008 Location: Convoy, Ohio Posts: 39 Rep Power: 0	Are you only going to drag race her or do you want to track her as well? __________________ 84 GSL with 5.0 SBF and T5 85 GS with 350 SBC and 350 trans, GRM Challenger

01-07-2009, 11:11 PM	#7
NoDOHC The quest for more torque Join Date: Sep 2008 Location: Sheboygan, Wisconsin Posts: 855 Rep Power: 17	The solid rear axle should be your friend (not the stock axle, just the configuration). I have seen v8s in FBs before (they fit ok) but I am not familiar with AMC engines. __________________ 1986 GXL ('87 4-port NA - Haltech E8, LS2 Coils. Defined Autoworks Headers, Dual 2.5" Exhaust (Dual Superflow, dBX mufflers) 1991 Coupe (KYB AGX Shocks, Eibach lowering springs, RB exhaust, Stock and Automatic)

12-09-2009, 01:13 AM	#8
reaper 2slow4u Join Date: Dec 2009 Location: Las Vegas Posts: 18 Rep Power: 0	give grannysspeedshop.com a try. thats who i'm going through for my sbf conversion __________________ my hoarse is amazing sincityrotary.com a place for las vegas rotary enthusiasts

12-23-2009, 09:21 PM	#9
RotorDad Big Ugly Join Date: Apr 2009 Location: Fredericksburg, Va Posts: 591 Rep Power: 17	Interesting never seen anyone do a AMC 401, love to see the end result. Good luck with the project. A Ford 9" has many gearing options & is damn strong, the 8.8" are good rears as well. __________________ *Boosted Big Body On 335's* PS3 ID: Rotordad 1986 Mazda RX7 GXL - Street ported 13BT, Haltech, 62mm, ect. 2006 MazdaSpeed 6 - Eagle, Wiseco, Cobb, ect.

12-29-2009, 05:21 PM	#10
Rogue_Wulff Non Member Join Date: Jun 2008 Posts: 310 Rep Power: 17	Almost hate to admit it, but I've been contemplating doing a SBF swap in my SE chassis. I've even gone to the extent of reading of reading thru the granny's website. Seems pretty straight forward. Even their 8.8 Ford rearend in it's basic form would be a simple swap, since it's designed to use SE rear brakes. Since I have a total of 3 1st gens, having one converted to a SBF wouldn't be out of line, much...... Now if I could just convince myself of that last bit.

02-26-2010, 12:49 AM	#11
reaper 2slow4u Join Date: Dec 2009 Location: Las Vegas Posts: 18 Rep Power: 0	of coarse it wouldn't be out of line! do it. document it. post it. provide more knowledge for those who are wanting the same thing. its like doing a favore for the 7 community __________________ my hoarse is amazing sincityrotary.com a place for las vegas rotary enthusiasts

02-26-2010, 02:40 AM	#12
Whizbang Respecognize! Join Date: Jul 2008 Location: Δx = ħ/2Δp Posts: 3,190 Rep Power: 20	im tinkering with the idea for a daily driver... __________________ For current updates and event coverage check out Follow on Twitter! @WhizbangRally Whizbang Rally's Webpage \| Facebook

01-21-2011, 12:55 AM	#13
Garfinkles Motor Works RCC Contributor Join Date: Mar 2008 Posts: 535 Rep Power: 18	I built a 401 roller motor for a customer and put it in his cj5 jeep .It was strong running but large in size,heavy. I would want a light weight high rpm v8 in my FB .I am slowly putting a FD twin turbo in a gslse now .I will sell it at any stage if someone wants to finish it . I understand you need to use the motor you have for the swap.Be sure the motor will fit before getting to far along .If it works out the torque will be great fun .

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