View Full Version : 4.2L Potential
GraystoneLS
07-15-2005, 10:49 AM
All it takes is a ton of money but I guess anything is possible. Does this look a little familiar?
http://www.smithracecraft.com/gallery/galler24.jpg
They say is good for about 950HP on pump gas and runs the 1/4 in the low 9's.
Here are some threads about that car / engine.
http://www.inliners.org/cgi-bin/ultimatebb.cgi?ubb=get_topic;f=3;t=000538
http://forums.hotrod.com/ubbthreads/showflat.php?Cat=0&Number=8208&an=0&page=0#8208
MoJoe
07-15-2005, 01:03 PM
I am speachless :eek: That is what I am been thinking about all along. Look at the inline 6 for the Toyota Supra, it can handle 1000HP in stock form. Inlines have such a better balance :cool: That pic has me drooling.
Envoy Fan
07-15-2005, 01:13 PM
:yes:
Jman423
07-15-2005, 02:08 PM
I am speachless :eek: That is what I am been thinking about all along. Look at the inline 6 for the Toyota Supra, it can handle 1000HP in stock form. Inlines have such a better balance :cool: That pic has me drooling.
DOWN BOY!! :laugh:
Thats sweet!!
sallen
07-15-2005, 02:22 PM
that is freeking sweet, i would love to hear what it sounds like
shay
MoJoe
07-15-2005, 02:25 PM
that is freeking sweet, i would love to hear what it sounds like
shay
Like a F-18 I am sure :cool:
ScarabEpic22
07-15-2005, 03:00 PM
:yes: :eek: (drool)
Man thats cool!
02EnvoySLE Guy
07-15-2005, 05:36 PM
Holy crap..... holy crap.... holy CRAP!! :eek: :eek: :yes: Now THATS what I'm talkin' 'bout!!
MoJoe
07-15-2005, 05:38 PM
So whatchu got SS :raspberry :rotfl:
220com2
07-15-2005, 07:02 PM
:eek: its like a god, worship it , bow down to it. truly speechless :yes:
work-n-show
07-15-2005, 07:31 PM
Can I get a part #???? :laugh:
Jman423
07-15-2005, 07:37 PM
Can I get a part #???? :laugh:
No, but I am sure that we can come up with a 5 digit price. ;)
tb_ky
07-16-2005, 02:51 AM
:eek: ^ Haha yeah. Look at the size of the intake hose( im guessing thats what it is :confused: ).
All I can say is daayyyyummmm!
Jman423
07-16-2005, 02:55 AM
.......All I can say is daayyyyummmm!
:eek: SAME HERE
Thats gonna be my engine, someday!! :undecided :yes:
deathbynosleep
07-16-2005, 03:08 AM
i see you guys came across the picture of my engine.
FattyTBEXT
07-16-2005, 09:31 AM
i see you guys came across the picture of my engine.
Yeah, so you might want to invest in some bodyguards. I'm on my way to Bensalem to make you an offer you can't refuse... :x
GraystoneLS
07-16-2005, 09:47 AM
Yea that is definitely the way to take care of the 4.2 power issues. The size of the turbo is just crazy. I don't think the wife is going to go for that.
Jman423
07-16-2005, 01:42 PM
Yea that is definitely the way to take care of the 4.2 power issues. The size of the turbo is just crazy. I don't think the wife is going to go for that.
Don't say anything to her, chances are she'll never look under the hood. And you could blame the sudden burst of power on a great fuel additive. As for explaining the checkbook, well, you're on your own there! :rotfl:
damnit theres no more info on that site to wat kinda pistons, rods, crank, how to overcome the ecu, the list goes on. Damn tease.
jallshouse
07-16-2005, 04:13 PM
alls i need is a street address and the coon will hook us up :rotfl: i would love to have the recipe for that changeover!!! could you imagine the heads that would turn at the drag strip as you pull up to the line with four big azz slicks bolted on :undecided
sallen
07-17-2005, 04:13 AM
lol roadkill will drag it home, lol
shay
MoJoe
07-17-2005, 03:48 PM
Roadkill could be your sled dog, I mean raccoon :duh: :D
GraystoneLS
07-18-2005, 09:10 AM
Ok found another one. Sorry this one has even less onfo on how they did. It is in a 1968 Firebird.
http://image50.webshots.com/50/0/31/45/396403145whrbRE_ph.jpg
http://image58.webshots.com/158/0/66/56/396406656omEECG_ph.jpg
Below is part of a thread relating to it. 675HP for a normally aspirated engine is pretty damn good.
Later
Registered User
Posts: 40
(7/16/05 18:32)
Reply 4.2 DOHC in FBody
--------------------------------------------------------------------------------
The Purple Car from the PSN belongs to a guy in South Texas named John Lively. He did the swap himself in 02-03. I bought the original '68 sprint motor he pulled from the car for the swap.
I have a photo of the OHC engine which he painted in that same funky Ford Purple as the car after rebuilding it but unable to post the photo.
If some one was interested in knowing more about the swap he seems the type that would answer questions. I know he did do some fabricating and had some issues with the electronics but ultimately sorted it out
OHCToi
Registered User
Posts: 41
(7/16/05 18:38)
Reply Re: vortec 4200 vs OHC6 <- thoughts ???
--------------------------------------------------------------------------------
Ooops - sorry OHC 4.2 not DOHC
Edited by: OHCToi at: 7/16/05 18:43
Tempest Custom
Registered User
Posts: 95
(7/17/05 8:39)
Reply Re: vortec 4200 vs OHC6 <- thoughts ???
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That's cool, but for all the trouble, I'd have had to put in an LS1, LS2, Ramjet V8, or some other fuel injected V8.
Does anyone here think that car could smoke a GTO?
I'll be back...
Ol' Blue
BMFH
Registered User
Posts: 145
(7/17/05 12:30)
Reply Re: vortec 4200 vs OHC6 <- thoughts ???
--------------------------------------------------------------------------------
Hello All
In it's first race, the 4.2L was raced in Baha against a field of V8's.
It recieved the best performance award, and WON THE RACE against all the V8's
In race form it was rated at 675 H.P. at 7000 RPM's
I have heard that it is a monster on the Pikes Peak Hill Climb too.
So I would say that with some re-work over its stock 270 H.P. it could easily put out 400 H.P. (naturaly asperated) and smoke a GTO easily, might even do it in it's stock form.
Weight is the Enemy.
The OHC 6 is 200 pounds lighter than a Pontiac V8 of the era, and the 4.2L is lighter than the OHC 6.
Put it in a Firebird, and go blow some doors off.
Have Fun
John
Toolman
07-18-2005, 09:44 AM
that picture looks photochopped..
Dacomputernerd
07-18-2005, 06:11 PM
The pics dont work :no: :\
ENVOY2LOW43
07-18-2005, 06:21 PM
what the...:x ......where's the pics, i wanna see the pics.... :mad:
ScarabEpic22
07-18-2005, 08:27 PM
Yea, the pics arent working. I really want to see them!!! :D
sallen
07-18-2005, 10:57 PM
i wanna c
shay
Jman423
07-19-2005, 01:25 AM
They didn't work for me either in Firefox, but if you right click on the link and open them in an IE window, they work :m2:
can we get some insight on the block, rods, pistons, crank. Hell everything, its eatin me up inside. I know the turbo 1 had darton sleeves, but thats about it. How the hell do u get those numbers n/a, unless its the extreme setup liek that baja tb.
GraystoneLS
07-19-2005, 08:36 AM
The pictures seem to be there this morning. If they go out again I guess try this:
http://image50.webshots.com/50/0/31/45/396403145whrbRE_ph.jpg
http://image58.webshots.com/158/0/66/56/396406656omEECG_ph.jpg
More details would be nice but it seems like people are just starting to do major mods to these engines. I'm sure it wont be long before someone spills the beans and let everyone know how they did it.
Envoy Fan
07-19-2005, 11:32 AM
The pictures seem to be there this morning. If they go out again I guess try this:
http://image50.webshots.com/50/0/31/45/396403145whrbRE_ph.jpg
http://image58.webshots.com/158/0/66/56/396406656omEECG_ph.jpg
More details would be nice but it seems like people are just starting to do major mods to these engines. I'm sure it wont be long before someone spills the beans and let everyone know how they did it.
Links no work :mad: Do they have a restriction on web traffic :undecided
Blulytes
07-19-2005, 01:00 PM
Links no work :mad: Do they have a restriction on web traffic :undecided
If you are using firefox, they don't work.
I had to copy the link into IE to get them...
Thread only makes sense after looking at both pics!
jimmyjam
07-19-2005, 01:19 PM
If you are using firefox, they don't work.
I had to copy the link into IE to get them...
Nada.. "HTTP Error 403 - Forbidden" in both browsers. probably over his bandwidth quota, you must have hit it when the counters reset.
Could someone host the pics if they can get them? i wanna see waahhhwahhhh :cry:
Envoy Fan
07-19-2005, 05:22 PM
Nada.. "HTTP Error 403 - Forbidden" in both browsers. probably over his bandwidth quota, you must have hit it when the counters reset.
Could someone host the pics if they can get them? i wanna see waahhhwahhhh :cry:
Jimmy we are not authorized to see pix. :cry:
tdevri65
07-19-2005, 05:39 PM
Try copying the link location, opening a new browser window, and pasting the location in the address bar. What happens is the site doesn't allow you to get the picture if you are clicking a link from another site, as opposed to going to the picture directly.
MoJoe
07-19-2005, 06:12 PM
Click on the link and let it error out, then just hit the refresh button, worked for me :)
jdits7
07-19-2005, 07:20 PM
Worked for me that way also MoJoe.
Envoy Fan
07-19-2005, 09:02 PM
Click on the link and let it error out, then just hit the refresh button, worked for me :)
Got it, you da man :yes:
a video of the beast running
http://ls1tech.com/forums/showthread.php?t=404760&highlight=trailblazer
Siege87
11-14-2005, 06:01 PM
WOW !!! thats insane!! very cool
Turbo4200
12-17-2005, 03:04 AM
OK- I know I'm new here, but I've talked to a few guys about that engine, as I'm building something very similar for my 68 Firebird. Self Racing built the engine for him; Glen Self is well known in the I6 world (and many others). I can't go into too many specefics, but the engine has made 1300hp at 20psi using some of the following:
Sleeved, 3.75" bore vice 3.66
Reworked stock crank
'special' rods, pistons purpose built for the turbo (well, duh!)
plenty of head work- raised exhaust ports (involves welding)
slightly bigger valves
reground cams with Jesel Ecotec followers (Ecotec, aka Saab design), cam phaser not used (timing gears locked, mine won't be)
obviously a hand-made intake and throttle body (Self racing)
a beefed up main girdle
and a decently sized turbo
PS- The Purple firebird is real; both of those guys are on my other website. I have more pics of both rides.
JEFF
02TrailblazerLS
12-17-2005, 03:32 AM
Its a shame, but I dont' see much potential for the amazing 4.2L if GM can't fit them into the 900 trucks, and it looks like they can't.
The 2009 Colorado better fit them, or they will be to costly to build. The 3.9L V6 GM has will have a spinoff in 2009 displacing 4.3 liters, putting out around similar power and fuel efficiency as the current 4.2L I6. This motor will probably be the base motor in a RWD chevy as it can be mounted that way. This means two things. The Trailblazer will have a new base motor, and there will be another RWD chevy with this motor- rumored to be the new Camaro. Note that the .2L upsize in the inline 6 motor (aka Atlas 6)has been canceled, but the 3.5 5cyld (atlas 5) will become the 3.7L soon.
That and the the fact that the new 2008 Trailblazer is rumored to be the same size (it will have a third row standard) means nothing good for the 4.2L 6. I expect them to be dropped, or the design to be sold (Toyota knows a good engine when they see one) in favor of the new 270hp OHV engine that is both more compact and cheaper. The uplevel engine in the new trailblazer will be a 320hp 5.3L V8 with Displacement on Demand. The small blocks cost less to make than the 4.2L 6, but with displacement on demand, I don't know if it will keep that advantage.
If however, GM can put the 4.2 in the 900 truck, doubling its volume, it can lower fixed cost on producing the motor in half. That is a good case to put the 4.2 in many less expensive products. I don't know what it will fit in, though.
OK- I know I'm new here, but I've talked to a few guys about that engine, as I'm building something very similar for my 68 Firebird. Self Racing built the engine for him; Glen Self is well known in the I6 world (and many others). I can't go into too many specefics, but the engine has made 1300hp at 20psi using some of the following:
Sleeved, 3.75" bore vice 3.66
Reworked stock crank
'special' rods, pistons purpose built for the turbo (well, duh!)
plenty of head work- raised exhaust ports (involves welding)
slightly bigger valves
reground cams with Jesel Ecotec followers (Ecotec, aka Saab design), cam phaser not used (timing gears locked, mine won't be)
obviously a hand-made intake and throttle body (Self racing)
a beefed up main girdle
and a decently sized turbo
PS- The Purple firebird is real; both of those guys are on my other website. I have more pics of both rides.
JEFF
dang 1300hp at only 20psi thats just mind boggling how hes getting that much power out of the 4200. Im assuming thats on c16. Any idea of how much that block ran:) . Good info.
Turbo4200
12-18-2005, 08:50 PM
The block actually didn't get much other than the sleeves & pistons... The sleeves run $100 and change each, while good turbo JE's or CP's will run you $500-600 a set.
If GM (Mahle) had just made the sleeves a little bit thicker...
The block actually didn't get much other than the sleeves & pistons... The sleeves run $100 and change each, while good turbo JE's or CP's will run you $500-600 a set.
If GM (Mahle) had just made the sleeves a little bit thicker...
wow is all i can say. So do u plan to run bs3, hold out for hptuners and use the stock pcm, or use a combo of hpt and megasquirt 2 when it comes out next year. Thats the biggest hurdle i think right now with 4200
ieatglue
12-18-2005, 10:05 PM
I asked you guys if an L6 could sound like a V8 and you said it can't be done :raspberry
FattyTBEXT
12-18-2005, 10:23 PM
I asked you guys if an L6 could sound like a V8 and you said it can't be done :raspberry
You mean I6, not L6. ;)
ScarabEpic22
12-19-2005, 12:53 AM
You mean I6, not L6. ;)
Actually it says L6 in the tech GM docs, but as I look at my build data, it says I6 too, so thats what Im callin it!
ieatglue
12-19-2005, 12:55 AM
I call it both, not knowing which one's right/wrong :confused:
SSportWagon
12-19-2005, 04:01 PM
Chevy had a L6-250 for many years in the 60's-70's. I had one and the '69 Sky it was in fell apart around the motor with 370,000+ miles on it ... motor still going strong.
ScarabEpic22
12-19-2005, 08:54 PM
Chevy had a L6-250 for many years in the 60's-70's. I had one and the '69 Sky it was in fell apart around the motor with 370,000+ miles on it ... motor still going strong.
I dont know much about that engine, it is an inline 6cyl engine with 250ci displacement, correct?
If so, then it is basically the same size as the 4.2L I6 offered in the GMT-360/370 platform which is 256ci displacement.
johnwiz
12-19-2005, 09:57 PM
The old Stovebolt six was a great engine for the time.. Had one in my 68 Nova. But very different than the new 4.2L... the old 250 was a traditional OHV engine. Pontiac also had an overhead cam engine during that time as well.... But doubt there would be anything in common between them other than being inline 6 cylinders...
ScarabEpic22
12-19-2005, 10:48 PM
The old Stovebolt six was a great engine for the time.. Had one in my 68 Nova. But very different than the new 4.2L... the old 250 was a traditional OHV engine. Pontiac also had an overhead cam engine during that time as well.... But doubt there would be anything in common between them other than being inline 6 cylinders...
Sorry, I forgot to mention that they were probably only similar in displacement and 6 cylinders.
Turbo4200
12-20-2005, 03:57 AM
ICEn-
I'm currently running an Accel DFI gen VII (on one of those old Pontiac OHC motors someone mentioned). IF HPtuners comes out with any type of capability, I'll be on tha, too- as I'm helping with the swap of a few of these into a 65 Chevy II, a 56 Chevy truck, and another Firebird.