6g72 sohc to 6g74 dohc swap...worth it? - 3000GT/Stealth International Message Center

plpz2104 · 03-17-2008, 09:26 AM

exactly what it sounds like is it worth the power gain to switch from the sohc motor to the jdm dohc? if so how dificult would it be? and about how much would a swap like this run me? i did my research on the search button but all i found was dohc to dohc not sohc to dohc any help is greatly appreciated

thuanvinhny · 03-17-2008, 09:37 AM

I am not sure. But I think they both have the same BLock. But different top end. I would simply measure it, or research about it. If so, I would pay 500$ for a top end with valves and DOHC from a parted out car, with new gasket and seal....There goes DOHC conversion.

Stealthee · 03-17-2008, 09:50 AM

The block is NOT the same. Even 6G72 DOHC to 6G72 SOHC are different blocks.

As for the swap it is far from easy or a walk in the park. The 6G74 swap alone on a DOHC requires alot but going from a SOHC is going to require much more.

plpz2104 · 03-17-2008, 10:02 AM

but its almost the same procedure as swapping to a 6g72 dohc engine but more power so if I was pplanning to swap to a dohc I might as well go with the 3.5 l correct

plpz2104 · 03-17-2008, 06:52 PM

bump....can anyone answer the ? and what all would I need to complete the swap

plpz2104 · 03-17-2008, 07:17 PM

bump....can anyone answer my question n let me know what I would need for the swap

Driftersdr · 03-17-2008, 07:32 PM

If you are asking what all would I need... typically people asking this question haven't even done the research required to even begin contemplating the upgrade. You can't just say what do I need part a b and c. You have to learn about how its all going to work.
Just my 2 c.

plpz2104 · 03-17-2008, 08:35 PM

well i've done research and i see i need the dohc motor a dohc ecu and a/c lines i'm not sure what else i may need for this project

Stegmann · 03-18-2008, 04:47 AM

Quote:

Originally Posted by plpz2104

well i've done research and i see i need the dohc motor a dohc ecu and a/c lines i'm not sure what else i may need for this project

Search is the 3rd link from the right on the menu strip directly above the ad at the top of this thread.

New Owner Questions is not the best choice of boards for this type of question.

maTT · 06-17-2008, 07:08 PM

No it is not worth it. Doing a n/a swap is a waste of time IMO. I would definitely recommend a DOHC TT swap though. Not much harder than a n/a swap and the end result will be a quick car.

03-17-2008, 09:26 AM	#1 (permalink)
plpz2104 New User - Please be kind Join Date: Mar 2008 Trader Rating: (0)	6g72 sohc to 6g74 dohc swap...worth it? exactly what it sounds like is it worth the power gain to switch from the sohc motor to the jdm dohc? if so how dificult would it be? and about how much would a swap like this run me? i did my research on the search button but all i found was dohc to dohc not sohc to dohc any help is greatly appreciated

03-17-2008, 09:37 AM	#2 (permalink)
thuanvinhny Forum Member Join Date: Feb 2008 Drives: 93 RT TT (Gorgeous) Trader Rating: (0)	Re: 6g72 sohc to 6g74 dohc swap...worth it? I am not sure. But I think they both have the same BLock. But different top end. I would simply measure it, or research about it. If so, I would pay 500$ for a top end with valves and DOHC from a parted out car, with new gasket and seal....There goes DOHC conversion.

03-17-2008, 09:50 AM	#3 (permalink)
Stealthee Damage Control Join Date: Jul 2003 Location: 1 hr south of Pitt Drives: 1994 Stealth Trader Rating: (77)	Re: 6g72 sohc to 6g74 dohc swap...worth it? The block is NOT the same. Even 6G72 DOHC to 6G72 SOHC are different blocks. As for the swap it is far from easy or a walk in the park. The 6G74 swap alone on a DOHC requires alot but going from a SOHC is going to require much more. __________________ Kbizzle [11:25 P.M.]: my ass is really sore Kbizzle [11:25 P.M.]: this is most displeasing

03-17-2008, 10:02 AM	#4 (permalink)
plpz2104 New User - Please be kind Join Date: Mar 2008 Trader Rating: (0)	Re: 6g72 sohc to 6g74 dohc swap...worth it? but its almost the same procedure as swapping to a 6g72 dohc engine but more power so if I was pplanning to swap to a dohc I might as well go with the 3.5 l correct

03-17-2008, 06:52 PM	#5 (permalink)
plpz2104 New User - Please be kind Join Date: Mar 2008 Trader Rating: (0)	Re: 6g72 sohc to 6g74 dohc swap...worth it? bump....can anyone answer the ? and what all would I need to complete the swap

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03-17-2008, 07:17 PM	#6 (permalink)
plpz2104 New User - Please be kind Join Date: Mar 2008 Trader Rating: (0)	Re: 6g72 sohc to 6g74 dohc swap...worth it? bump....can anyone answer my question n let me know what I would need for the swap

03-17-2008, 07:32 PM	#7 (permalink)
Driftersdr 3s in florida! Join Date: Oct 2005 Location: Bradenton, Florida Drives: 95 3k, 04 cbr600 Trader Rating: (6)	Re: 6g72 sohc to 6g74 dohc swap...worth it? If you are asking what all would I need... typically people asking this question haven't even done the research required to even begin contemplating the upgrade. You can't just say what do I need part a b and c. You have to learn about how its all going to work. Just my 2 c.

03-17-2008, 08:35 PM	#8 (permalink)
plpz2104 New User - Please be kind Join Date: Mar 2008 Trader Rating: (0)	Re: 6g72 sohc to 6g74 dohc swap...worth it? well i've done research and i see i need the dohc motor a dohc ecu and a/c lines i'm not sure what else i may need for this project

06-17-2008, 07:08 PM	#10 (permalink)
maTT Panda Master Join Date: Sep 1999 Location: FLORIDA Drives: with one foot. Trader Rating: (19)	Re: 6g72 sohc to 6g74 dohc swap...worth it? No it is not worth it. Doing a n/a swap is a waste of time IMO. I would definitely recommend a DOHC TT swap though. Not much harder than a n/a swap and the end result will be a quick car. __________________ I no longer work for 3SX however I still strongly recommend them for your 3S parts and service needs!