Dodge Bell housing patter help - Pirate4x4.Com : 4x4 and Off-Road Forum

dentedcj5 · 03-31-2011, 02:29 PM

I am trying to do a low budget 5.7 Hemi swap to a manual transmission and need some help from the dodge experts. I have a bell housing from a 3.7 V6 out of a dakota. Is this the same bolt pattern as the Hemi? What else has the same bolt pattern.

Thanks

swirvin21 · 03-31-2011, 02:40 PM

I HIGHLY doubt a V6 bellhousing would mount on a hemi.....best bet would be to go to the Jeep section and see what guys are using for their TJ Hemi swaps since it's the most popular platform for them

spacitywheeler · 03-31-2011, 03:55 PM

the 3.7 has the same mounting face as the 318/360... which is the same as the 5.7, 6.1 and 6.4 mounting depth is a little different than the la/magnum

flex plate, P5153753 is what is needed to bolt up a 3.7/5.2/5.9 TQ to a hemi

you do not say what trans you are using the bell housing on??

I am guessing this is going together on a bad ass truggy

you do remember where you are ... right?

YOU ARE HERE!

might need to swap flex plates or use a spacer... lol more information or move to where it belongs

b

dentedcj5 · 03-31-2011, 05:18 PM

Thanks Spacity. I am trying to use a 6speed manual out of a dakota/liberty that originally had a 3.7.
I am guessing that the flex plate P5153753 is from a 360/318 and I will need a flywheel from the same motor?

P.S. I tried asking the Jeep people and they all use auto transmissions and don't know jack about dodge. Thanks Dodge guys.

swirvin21 · 03-31-2011, 06:17 PM

I would look into the specs of that 6spd though, you need to see what it's rated for before you try to put it behind a Hemi. Well I've been corrected on the bellhousing, but the idea of any manufacturer putting a V8 rated trans behind a V6 would be surprising.

spacitywheeler · 03-31-2011, 06:19 PM

ouch, that light duty trans is not gonna like the hemi at all

I had hope you were using a nv4500 .... the nsg370 is rather weak... IIRC it was only suggested for use with 265 lbft at best! It was used in the benz cdi with a lower 1st gear that let it handle almost 400lbft... still kinda sketchy.

I have seen them behind LS v8 and not like it at all.... would not expect a long life behind a hemi.

I will give you my .02 on this...

with factory manifolds and with only a mild tune... you could get lucky. Would also tell you to keep your tires kinda small and dont lock up all 4 and do clutch drops!

what is the weight of the rig you are putting together?

good luck!

b

spacitywheeler · 03-31-2011, 06:26 PM

after I posted i looked a little... you had said you got a bell housing from a 3.7 dakota... then said you wanted to use the Liberty 6 speed... which is the NSG370... which has an integrated bell housing... SO what bell housing do you have? one for a nv1550 or even a nv3500... something out of a v6 dakota... I am not sure? but not a nsg370.

so the answer is NO... sorry

dentedcj5 · 03-31-2011, 08:59 PM

I'm sure it is a nsg370. I bought it at a swap meet real cheap. I was told that is was mated to a 3.7 out of a dakota. All my research tells me that it never came on a dakota, so I am guessing that is out of a liberty. The bell housing pattern is different than a 4.0 Jeep. I just took a closer look, you are right, it is a one piece unit.

I am aware of its lack of strength. NV4500 would be great, but I am on a low budget, plus I want to keep the Jeep as light as possible. The NSG370 is about half the weight of the NV4500. When I was a teenager, we use to put V8s into out flat fender Willys and used the stock t90 transmission. I think that transmission was only rated for 80 ftlb.

Thanks again for your help.

Elwenil · 03-31-2011, 10:36 PM

The Dakota used the Getrag 230, not the NSG370.

Why not find a NV3500? It's decently lightweight and was mated to 318 V8s in Dakotas and Rams. Should be pretty cheap these days also.

03-31-2011, 02:29 PM	#1 (permalink)
dentedcj5 Wheeler Join Date: Jun 2000 Member # 1095 Location: Grass Valley, CA Posts: 220	Dodge Bell housing patter help I am trying to do a low budget 5.7 Hemi swap to a manual transmission and need some help from the dodge experts. I have a bell housing from a 3.7 V6 out of a dakota. Is this the same bolt pattern as the Hemi? What else has the same bolt pattern. Thanks

03-31-2011, 02:40 PM	#2 (permalink)
swirvin21 Dueling Dodges Join Date: Jul 2008 Member # 116370 Location: Tulsa, OK Posts: 1,137	I HIGHLY doubt a V6 bellhousing would mount on a hemi.....best bet would be to go to the Jeep section and see what guys are using for their TJ Hemi swaps since it's the most popular platform for them __________________ 1998 Dodge Ram 2500 Twins: 1 black, 1 white... "The only thing necessary for the triumph of evil is for good men to do nothing." Ooh Rah! USMC 2003-2009

03-31-2011, 06:17 PM	#5 (permalink)
swirvin21 Dueling Dodges Join Date: Jul 2008 Member # 116370 Location: Tulsa, OK Posts: 1,137	I would look into the specs of that 6spd though, you need to see what it's rated for before you try to put it behind a Hemi. Well I've been corrected on the bellhousing, but the idea of any manufacturer putting a V8 rated trans behind a V6 would be surprising. __________________ 1998 Dodge Ram 2500 Twins: 1 black, 1 white... "The only thing necessary for the triumph of evil is for good men to do nothing." Ooh Rah! USMC 2003-2009

03-31-2011, 10:36 PM	#9 (permalink)
Elwenil Registered User Join Date: Jan 2005 Member # 41063 Location: Covington, VA Posts: 5,838	The Dakota used the Getrag 230, not the NSG370. Why not find a NV3500? It's decently lightweight and was mated to 318 V8s in Dakotas and Rams. Should be pretty cheap these days also. __________________ 1988 Dodge AW450 Ramcharger - 318TBI - NP435 - NP205 - D60s

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03-31-2011, 03:55 PM	#3 (permalink)
spacitywheeler Registered User Join Date: Aug 2009 Member # 140765 Posts: 43	the 3.7 has the same mounting face as the 318/360... which is the same as the 5.7, 6.1 and 6.4 mounting depth is a little different than the la/magnum flex plate, P5153753 is what is needed to bolt up a 3.7/5.2/5.9 TQ to a hemi you do not say what trans you are using the bell housing on?? I am guessing this is going together on a bad ass truggy you do remember where you are ... right? YOU ARE HERE! might need to swap flex plates or use a spacer... lol more information or move to where it belongs b

03-31-2011, 05:18 PM	#4 (permalink)
dentedcj5 Wheeler Join Date: Jun 2000 Member # 1095 Location: Grass Valley, CA Posts: 220	Thanks Spacity. I am trying to use a 6speed manual out of a dakota/liberty that originally had a 3.7. I am guessing that the flex plate P5153753 is from a 360/318 and I will need a flywheel from the same motor? P.S. I tried asking the Jeep people and they all use auto transmissions and don't know jack about dodge. Thanks Dodge guys.

03-31-2011, 06:19 PM	#6 (permalink)
spacitywheeler Registered User Join Date: Aug 2009 Member # 140765 Posts: 43	ouch, that light duty trans is not gonna like the hemi at all I had hope you were using a nv4500 .... the nsg370 is rather weak... IIRC it was only suggested for use with 265 lbft at best! It was used in the benz cdi with a lower 1st gear that let it handle almost 400lbft... still kinda sketchy. I have seen them behind LS v8 and not like it at all.... would not expect a long life behind a hemi. I will give you my .02 on this... with factory manifolds and with only a mild tune... you could get lucky. Would also tell you to keep your tires kinda small and dont lock up all 4 and do clutch drops! what is the weight of the rig you are putting together? good luck! b

03-31-2011, 06:26 PM	#7 (permalink)
spacitywheeler Registered User Join Date: Aug 2009 Member # 140765 Posts: 43	after I posted i looked a little... you had said you got a bell housing from a 3.7 dakota... then said you wanted to use the Liberty 6 speed... which is the NSG370... which has an integrated bell housing... SO what bell housing do you have? one for a nv1550 or even a nv3500... something out of a v6 dakota... I am not sure? but not a nsg370. so the answer is NO... sorry

03-31-2011, 08:59 PM	#8 (permalink)
dentedcj5 Wheeler Join Date: Jun 2000 Member # 1095 Location: Grass Valley, CA Posts: 220	I'm sure it is a nsg370. I bought it at a swap meet real cheap. I was told that is was mated to a 3.7 out of a dakota. All my research tells me that it never came on a dakota, so I am guessing that is out of a liberty. The bell housing pattern is different than a 4.0 Jeep. I just took a closer look, you are right, it is a one piece unit. I am aware of its lack of strength. NV4500 would be great, but I am on a low budget, plus I want to keep the Jeep as light as possible. The NSG370 is about half the weight of the NV4500. When I was a teenager, we use to put V8s into out flat fender Willys and used the stock t90 transmission. I think that transmission was only rated for 80 ftlb. Thanks again for your help.