complete engine overhaul questions.

chii370 · 11-25-2011, 02:46 AM

assuming i still own my Z in the near future thanks to the economy, and i get into the army as planned :P i have a few questions.

first, im looking at not just blindly putting a turbo or a SC on the car like a tard to get instant gratification power. that being said, im talking cam, heads, pistons, crank, rods, lifters, everything. and a bore. probably to 4.5 if the stock block will take it. but theres an issue.

MOST if not all of the parts i manage to locate for example on GTM site are mostly for the 350z engine. Now, do any of you know of where i can get all these parts LIKE the stage 3-5 engine components for the 350 offered by GTM, but for the 370 specifically. Is anyone even making them yet?

My goal is to make this engine produce roughly 500 WHP without using any forced induction. which shouldnt be to hard IF the parts even exist. I just dont know where to look. and i refuse to buy a built 4.5L stoker for 20k, not because of price.... but because then i would have MY oem engine left to deal with, which IMO is more then capable of producing IDENTICAL results.

Secondly, what kind of clutch system works best in the 370, and what would work best for my needs? i looked on GTM and theres like 20 different kinds..... single, double, tripple, quad, w,w/o damper, and a million other options that i dont fully understand. im not making a 1k WHP car, 500 to the wheels in the goal.... so an explanation of the different clutch systems and what they even do would be cool too :P

I was always an American muscle kinda guy prior to my nismo, and its EASY to get an old 401 or 350 or whatever manufacture you are into, and just buy the parts, install them, and make massive power with minimal fuss. same goes for transmissions and rear ends. i dont see why this should be any different. with 9500$ you could make a amc 360 motor pump out 850WHP.

Any help/info would be appreciated. thanks guys.

m4a1mustang · 11-25-2011, 02:49 AM

500 whp without FI... even on a 4.5... good luck.

Rui Z · 11-25-2011, 05:37 AM

Its possible, but unpractical. Its gonna cost way too much for you to do it. You will have to raise the redline to like 10,000 rpm.

bigsix · 11-25-2011, 09:14 AM

Wouldn't the VVEL system get in the way of modifying the "camshaft" ?

bullitt5897 · 11-25-2011, 09:51 AM

Since i am the only one who has actually gone mad crazy with this platform I have this to say. Making a hi revving 500rwhp engine is going to be near impossible! Your budget better be about $35k for a full plug and play motor that can make 400hp+. All the packages available for the 350 platform from gtm is avaioable for the 370z platform. Turbo/sc is the cheaper solution as well as a built short block for under $10k

Mike

6MT · 11-25-2011, 10:35 AM

Quote:

Originally Posted by m4a1mustang

500 whp without FI... even on a 4.5... good luck.

cossie1600 · 11-25-2011, 11:12 AM

Modding car without knowing if you can keep the car or not? That's smarter than trying to make NA power without sponsorship or trustfunds

Jeffblue · 11-25-2011, 01:25 PM

so you don't know the difference between, a single and double plate clutch but somehow you are going to build a 500rwhp NA 370z?

Jeffblue · 11-25-2011, 01:28 PM

Quote:

Originally Posted by chii370

I was always an American muscle kinda guy prior to my nismo, and its EASY to get an old 401 or 350 or whatever manufacture you are into, and just buy the parts, install them, and make massive power with minimal fuss. same goes for transmissions and rear ends. i dont see why this should be any different. with 9500$ you could make a amc 360 motor pump out 850WHP.

Any help/info would be appreciated. thanks guys.

5.8 Liter engine... V8.... cast iron block... the list goes on. the vq37 has none of those things.

if you want big hulking v8 power from a 370z.... then you should swap in a v8. lots of power from small displacement, you need FI. /thread

DOOMMONKEY777 · 11-25-2011, 02:01 PM

Yeah dude drop a v8 in it i would recommend vk56de since its nissan titan engine its cheap, easy to find and produses hella hp stock just check out Cris Forsberg's 370z that has a n/a vk56de producing 589whp at 7k rpm -=nAsTe=-

IDZRVIT · 11-25-2011, 04:04 PM

Small block chevy! Not like it hasn't been done before in a Z.

SPOHN · 11-25-2011, 08:43 PM

Quote:

Originally Posted by IDZRVIT

Small block chevy! Not like it hasn't been done before in a Z.

That's sacrilegious

m4a1mustang · 11-25-2011, 08:52 PM

But it's the way to go when you want N/A power in just about any platform. It just works!

1slow370 · 11-26-2011, 01:48 AM

Quote:

Originally Posted by m4a1mustang

But it's the way to go when you want N/A power in just about any platform. It just works!

yeah u should drop an ls3 in your muffstang lol

Rooskey · 11-26-2011, 02:24 AM

I can kinda understand where the op is coming from. I use to deal in older muscle cars my self, so yes it would come across as simple. Yes we do have the technology to add big cubic inches and intake runners and valves and such, but the technology on the ecu and vvel is not there. Think about it though. If we can make almost 350 rwhp with bolt ons why couldnt we make almost 500 with 4.5 liter stroker. I believe that we could if there was a way to get more air to the engine via the intake side of things. If we cant change the vvel or the cam the only other thing that could be changed would be the essentric part of the valve train (part of valve train that actually makes contact with the valve steem). With new pistons, clearance wouldnt be a problem and you could controll the duration and lift with one single part. Once again it would cost alot just to test out a theory.

11-25-2011, 02:46 AM	#1 (permalink)
chii370 Track Member Join Date: Jul 2010 Location: . Posts: 642 Drives: . Rep Power: 16	complete engine overhaul questions. assuming i still own my Z in the near future thanks to the economy, and i get into the army as planned :P i have a few questions. first, im looking at not just blindly putting a turbo or a SC on the car like a tard to get instant gratification power. that being said, im talking cam, heads, pistons, crank, rods, lifters, everything. and a bore. probably to 4.5 if the stock block will take it. but theres an issue. MOST if not all of the parts i manage to locate for example on GTM site are mostly for the 350z engine. Now, do any of you know of where i can get all these parts LIKE the stage 3-5 engine components for the 350 offered by GTM, but for the 370 specifically. Is anyone even making them yet? My goal is to make this engine produce roughly 500 WHP without using any forced induction. which shouldnt be to hard IF the parts even exist. I just dont know where to look. and i refuse to buy a built 4.5L stoker for 20k, not because of price.... but because then i would have MY oem engine left to deal with, which IMO is more then capable of producing IDENTICAL results. Secondly, what kind of clutch system works best in the 370, and what would work best for my needs? i looked on GTM and theres like 20 different kinds..... single, double, tripple, quad, w,w/o damper, and a million other options that i dont fully understand. im not making a 1k WHP car, 500 to the wheels in the goal.... so an explanation of the different clutch systems and what they even do would be cool too :P I was always an American muscle kinda guy prior to my nismo, and its EASY to get an old 401 or 350 or whatever manufacture you are into, and just buy the parts, install them, and make massive power with minimal fuss. same goes for transmissions and rear ends. i dont see why this should be any different. with 9500$ you could make a amc 360 motor pump out 850WHP. Any help/info would be appreciated. thanks guys.

11-25-2011, 02:49 AM	#2 (permalink)
m4a1mustang A True Z Fanatic Join Date: Feb 2009 Location: Northern VA Posts: 55,385 Drives: on two wheels Rep Power: 6962	500 whp without FI... even on a 4.5... good luck. __________________ - Steve Zs & Coffee - Saturdays at 10AM in Fairfax, VA and Columbia, MD (Click the banner!) LIKE us on Facebook!

11-25-2011, 05:37 AM	#3 (permalink)
Rui Z Track Member Join Date: Feb 2010 Location: (.)(.) Posts: 931 Drives: 8====D Rep Power: 16	Its possible, but unpractical. Its gonna cost way too much for you to do it. You will have to raise the redline to like 10,000 rpm. __________________

11-25-2011, 09:51 AM	#5 (permalink)
bullitt5897 Premium Member Join Date: Jan 2009 Location: North GA Posts: 6,831 Drives: Twin Turbo Z34 Rep Power: 3682	Since i am the only one who has actually gone mad crazy with this platform I have this to say. Making a hi revving 500rwhp engine is going to be near impossible! Your budget better be about $35k for a full plug and play motor that can make 400hp+. All the packages available for the 350 platform from gtm is avaioable for the 370z platform. Turbo/sc is the cheaper solution as well as a built short block for under $10k Mike __________________ *Shop Cars: 2013 318whp Nismo VspecII 370z SOLD, 2009 1000hp+ 93oct 4.0L TT 370z Fast Intentions STAGE 4 #054*

11-25-2011, 01:25 PM	#8 (permalink)
Jeffblue A True Z Fanatic Join Date: Dec 2009 Location: NY Age: 36 Posts: 9,192 Drives: Z32TT & 335xi Coupe Rep Power: 38	so you don't know the difference between, a single and double plate clutch but somehow you are going to build a 500rwhp NA 370z? Last edited by Jeffblue; 11-25-2011 at 01:28 PM.

11-25-2011, 09:14 AM	#4 (permalink)
bigsix A True Z Fanatic Join Date: Sep 2011 Location: Thailand Posts: 2,227 Drives: Honda City/Mazda 2 Rep Power: 19	Wouldn't the VVEL system get in the way of modifying the "camshaft" ?

11-25-2011, 11:12 AM	#7 (permalink)
cossie1600 A True Z Fanatic Join Date: Jun 2009 Location: californee way Posts: 5,380 Drives: 370, Leaf Rep Power: 30	Modding car without knowing if you can keep the car or not? That's smarter than trying to make NA power without sponsorship or trustfunds

11-25-2011, 02:01 PM	#10 (permalink)
DOOMMONKEY777 A True Z Fanatic Join Date: Oct 2010 Location: Crooklyn Posts: 1,008 Drives: 370Z 6psd-sport-pkg Rep Power: 21	Yeah dude drop a v8 in it i would recommend vk56de since its nissan titan engine its cheap, easy to find and produses hella hp stock just check out Cris Forsberg's 370z that has a n/a vk56de producing 589whp at 7k rpm -=nAsTe=- __________________ Kids don't do Drugs, Drugs are bad, so let the professional druggies do Drugs for you. 537whp/496lb/tq@8-9PSI 93 octane

11-25-2011, 04:04 PM	#11 (permalink)
IDZRVIT A True Z Fanatic Join Date: May 2009 Location: Halifax Posts: 1,659 Drives: '13 CTS-V, '76 Vette Rep Power: 27	Small block chevy! Not like it hasn't been done before in a Z. __________________ "America.... still builds rockets!" Vette: 355 cid, 400 rwhp '13 CTS-V Coupe: 6.2L LSA, 556HP

11-25-2011, 08:52 PM	#13 (permalink)
m4a1mustang A True Z Fanatic Join Date: Feb 2009 Location: Northern VA Posts: 55,385 Drives: on two wheels Rep Power: 6962	But it's the way to go when you want N/A power in just about any platform. It just works! __________________ - Steve Zs & Coffee - Saturdays at 10AM in Fairfax, VA and Columbia, MD (Click the banner!) LIKE us on Facebook!

11-26-2011, 02:24 AM	#15 (permalink)
Rooskey Track Member Join Date: Jul 2010 Location: South Carolina Posts: 974 Drives: 2014 Alpha7 GTR Rep Power: 16	I can kinda understand where the op is coming from. I use to deal in older muscle cars my self, so yes it would come across as simple. Yes we do have the technology to add big cubic inches and intake runners and valves and such, but the technology on the ecu and vvel is not there. Think about it though. If we can make almost 350 rwhp with bolt ons why couldnt we make almost 500 with 4.5 liter stroker. I believe that we could if there was a way to get more air to the engine via the intake side of things. If we cant change the vvel or the cam the only other thing that could be changed would be the essentric part of the valve train (part of valve train that actually makes contact with the valve steem). With new pistons, clearance wouldnt be a problem and you could controll the duration and lift with one single part. Once again it would cost alot just to test out a theory.

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