Dohc V8

When is GM going to give us a DOHC V8?I want to experiment with one bad.I just don't want to buy a ford or japanese V8.Any ideas?I would like to try doing some stuff with a northstar.Can't afford a LT5.

the thing is, they take up a whole lot of room. :(

I wouldn't hold your breath. GM's committed to cam-in-block V6's and V8's for the future. And rightfully so IMHO.

Originally posted by blackLS1
When is GM going to give us a DOHC V8?I want to experiment with one bad.I just don't want to buy a ford or japanese V8.Any ideas?I would like to try doing some stuff with a northstar.Can't afford a LT5.

GM has a DOHC V8 right hear (http://media.gm.com/division/powertrain/photos/04_car/images/2004%204_6L%20V8%20L37-LD8%20HiR_jpg.jpg)

THe Bonneville GXP is the Cheapest NEW car from GM you can get with a DOHC V8, $31K after rebate. Or you can get lots of used late 90's Caddys for under/around $20K

Raid the junkyard for used Northstars.

Try finding a 4.0 DOHC engine in the Olds Auraura (sp?). Its a mini northstar. As far as GM making DOHC V8's, I dont see that happening outside of Caddy or Buick. GM does have DOHC V6's and I-4's.

Originally posted by Big Als Z
Try finding a 4.0 DOHC engine in the Olds Auraura (sp?). Its a mini northstar. As far as GM making DOHC V8's, I dont see that happening outside of Caddy or Buick. GM does have DOHC V6's and I-4's.

I was just going to say that. :thumb:

Used Auroras are reasonably priced, unless you want to grab a used Northstar Cadillac. Both have been out about 10 years, so they should be pretty cheap.

Large-displacement V8s really want to be OHV cam-in-block. Consider the Ford DOHC 4.6 mod motor and GM did the LS1 V8. The OHV LS1 is smaller, lighter, has a much lower c.g., allows for a much lower hoodline, makes more power, and (I'd bet anything) is cheaper.

For me, horsepower/engine weight is more important than horsepower/liter. By that measure, big OHV V8s kick ass.

Ford should've followed Saleen's lead in developing a motor for the GT, an NA 7.0 V8 would've been much better than the overwrought, overweight DOHC supercharged engine they went with.

Of course 99% of the buying public perceives DOHC as being "superior". This is really only true if displacement is limited.

Originally posted by Dan Baldwin
Of course 99% of the buying public perceives DOHC as being "superior". This is really only true if displacement is limited.

I like the BMW M owners bitching about the CTS-V..."Its got 60 year old engine technology...Oh, it doesnt have Variable valve timing, etc etc...

Upset that it makes the same power as the old M5 motor which had DOHC, VVT, etc etc, with only an extra ~40ci or so? :p

Originally posted by MissedShift
I like the BMW M owners bitching about the CTS-V..."Its got 60 year old engine technology...Oh, it doesnt have Variable valve timing, etc etc...

Upset that it makes the same power as the old M5 motor which had DOHC, VVT, etc etc, with only an extra ~40ci or so? :p

ahaha did you see thoes letters in C&D? ahahahah!
I though the same thing.

Originally posted by Big Als Z
ahaha did you see thoes letters in C&D? ahahahah!
I though the same thing.

Bingo

Originally posted by MissedShift
I like the BMW M owners bitching about the CTS-V..."Its got 60 year old engine technology...Oh, it doesnt have Variable valve timing, etc etc...

Upset that it makes the same power as the old M5 motor which had DOHC, VVT, etc etc, with only an extra ~40ci or so? :p
Originally posted by Big Als Z
ahaha did you see thoes letters in C&D? ahahahah!
I though the same thing.

I saw those too, some people are so ignorant. I guess they would rather have the 76+ year old DOHC technology.

Funny how the "low tech engine" is more powerful and gets far better fuel economy 16/25 vs. 13/21 in the M5.

If low tech means more HP, more torque, better MPG, lighter, lower cg, more reliable, cheaper to mod , cleaner emmissions, and cheaper to build and maintain, than I'll take "low tech" any day.:bow:

Thanks guys.I guess I will just try and find the northstars and aurora V8s.I love the cam in block tech but would like to just toy around with something different.I see and read about fords 4.6 and 5.4s and know GM could make something better.It would be cool to have a performance oriented RWD car from GM with some kind of DOHC motor.

Didja see what they (CandD) said about the BMW 645i convertible? <paraphrased>: "Nice Camaro"

BWAHAHAHAHAHA!

BMW *used* to make lightweight fun-to-drive sport sedans. Now they make OVERweight OVERwrought gizmo contraptions with styling from Mars. They have truly lost their way.

black LS1
when I used to hang at Corner-Carvers.com (mostly Mustang roadracers), the DOHC mod motor was so much reviled that some would actually swap the old 5.0 liter (or stroker 5.4) OHV motor into their mod-motored track cars! All that motor did for the Mustang was add 200 lb. and reduce its reliability. Two guys I know from the track (road courses) have gone through three mod-motors in two seasons on their street/track Mustang Cobras. These aren't race cars, just street cars that they track maybe 6-8 times a year.

There is a performance-oriented rwd GM car with a DOHC motor: Cadillac XLR. Bring bags of $$$$$!

If you do swap in a DOHC motor lemme know so I can put yer LS1 in my 240Z!

Actually Dan I would never ever think of snatching my LS1 out for anything other than another bigger cubed stronger LS(1,2,6,7):D

I would like to put the DOHC motor in a 91 S10.Or I was thinking of trying to fit one in a late 70s 280ZX.

Wasn't the LT-5 in the ZR-1 vettes a5.7 DOHC?

Get yourself a used Caddy ETC, they can be had for pretty cheap. The interior fit and finish usually isn't that great in the ETC, but the 300hp Northstar is a sweet pkg. They sound awesome and make good torque too. The aftermarket is starting to pick up for the Northstar V8, I've seen cat-back exhaust systems that give the Northstar an extra 20 hp, or so they say/advertise. I bet the stock intake is probably pretty restritive too, so you could slap on a CAI for starters.

The engine is gaining populuaraity with hot-rodders too, I've seen numerous little hot rods with Northstars in then setup for rear-wheel drive over the last few years.

Just imagine the Northstar with supercharger, in the right car. Can we say Cobra killer.

Just imagine the Northstar with supercharger, in the right car. Can we say Cobra killer.

That is pretty much what I would love to do.I want to build a stroker/bored northstar.Then put it into a light stylish car body and attack the blue camp on there own turf.

There was a guy who swapped a northstar into his V6 Camaro, I don't know what happened to him.

Also check out www.chrfab.com

Originally posted by Dan Baldwin
Large-displacement V8s really want to be OHV cam-in-block. Consider the Ford DOHC 4.6 mod motor and GM did the LS1 V8. The OHV LS1 is smaller, lighter, has a much lower c.g., allows for a much lower hoodline, makes more power, and (I'd bet anything) is cheaper.



You should see how much room the Ford Aus DOHC 5.4 takes up..

Ford had to give the hood a bulge just to fit in!

Give me a OHV anyday ;)

Originally posted by SageofKnight
There was a guy who swapped a northstar into his V6 Camaro, I don't know what happened to him.

Also check out www.chrfab.com
I remeber that dude.Haven't heard anything about him in a few years.

check out the summer 2004 engine masters magazine that's on the shelves now. There's a Roots blown dual carb Northstar on the cover :D