Olds diesel performance

DoubleV

DoubleV

Royal Smart Person
Feb 25, 2011
2,139
83
Medina Ohio
We all know the Olds 350 diesel was a major dud. Poor reliability and zero power. So I got to thinking, is it not possible to build a high horsepower Olds diesel? I'm not referring to using a diesel block for a gas build ( I got one of those ) but keeping it an actual diesel. All of the reliability issues were solved ( at least somewhat ) in the later years of its use so what prevents anybody from building a high performance Olds diesel?

P.S. I'm not planning on building one myself but was just curious.
 
ssn696

ssn696

Older Than My 1980 Malibus
Supporting Member
Jul 19, 2009
4,229
113
New Mexico
I have often toyed with the idea of a 6.2 Chevy diesel with an overdrive manual transmission. Have not been crazy enough to try it yet.
 
xxBLOOD88SHOTxx

xxBLOOD88SHOTxx

Greasemonkey
Jul 17, 2018
125
43
Probably just because they were so rare and no one knows about them. Although I thought someone is building one on the forum here as we speak.
 
  • Agree
Reactions: fleming442
Dayzedandkonfuzed

Dayzedandkonfuzed

G-Body Guru
Feb 9, 2010
714
93
Anglemont, BC
I think anything is possible on a diesel with more compression or boost and a large supply of fuel. The latter is probably the tricky part on these.

I hope someone here is doing it, sounds like something I'd try lol
 
  • Like
Reactions: fleming442
olds307 and 403

olds307 and 403

Geezer
Oct 14, 2008
5,842
113
Melville,Saskatchewan
The only Olds diesel that has chance at living with any boost is the 4.3 V6, the extra head bolt per cylinder definitely helps. A few of the FWD guys have done it successfully. If anything their version with aluminum heads is more handicapped then the all cast iron RWD version. There is complete motors on Ebay, someone needs to dare to be different. It is too bad diesels floundered for so many years because of the Olds Diesel, at least Navistar copied the 4 head studs per cylinder 30 years later and added a turbo on the 6L and 6.4L terrible Ford truck diesels. Now new diesels with DEF and all the emissions systems are unreliable junk. See Olds was way before their time, making unreliable diesels 40 years too soon.
 
  • Haha
Reactions: 565bbchevy
axisg

axisg

Royal Smart Person
Jul 17, 2007
2,461
113
YYZ
Had a discussion with a friend about this recently as he is all about the Diesel and really misses his old Grand Prix Gbody. My understanding is that the heads would not allow much more boost as when new they were known for shearing head bolts and blowing head gaskets. If you add boost, reconfigure fuel and timing and I figure you may have just pulled the pin on the grenade.

however in other news.....https://www.youtube.com/watch?v=gV5E11nZ0-A
 
Thread starter Similar threads Forum Replies Date
C 5 speed with Olds diesel in 1979 Calais? Oldsmobile Cutlass / 442 / Hurst/Olds 20
8 Olds sport wheel "core" G-Body Parts For Sale / Trade 0
S Olds 455 G Body Headers New Users 4
P 79-80 Hurst Olds wheels G-Body Parts For Sale / Trade 2
Eddie Cutlass CUTLASS Replace TPS or Carb? Fuel / Air / Boost / Emissions 48
Eddie Cutlass TPS (Check Engine code 21) Fuel / Air / Boost / Emissions 4
rocketman269v ARH small block Olds headers G-Body Parts For Sale / Trade 0
KeepItTwisted 84 Hurst Olds New Users 19
azmusclecar Does anyone know the difference between a DR31 and a DR32 COIL IN CAP for my 1979 OLds 350? Electrical / Ignition / Starting 5
QS442 Olds 455 G-Body Parts For Sale / Trade 3
pontiacgp Olds Slant Back General Discussion 4
B 307 to 455 olds swap General Discussion 11
Northernregal Olds ticket to 9s... LS swap adventure. G-Body LS Swap 108
kygaca In Need of Olds 307 Frame Mounts Wanted 2
G Olds v8 Wanted 9
JAMCAR223 Has anybody been successful in keeping the paint from peeling on Olds exhaust ports?? General Discussion 20
S Hello from Southeastern Saskatchewan 1986 Olds Cutlass Salon New Users 27
rfpowerdude CUTLASS 1970 Olds Cutlass S Non-G Projects 14
AZRegal Various olds 442 emblems G-Body Parts For Sale / Trade 3
8 Olds rim for sale G-Body Parts For Sale / Trade 1
TURNA OLDs intake valley pain, I mean pan Engine / Swaps / Driveability 7
Red78Calais4speed 1987 Olds 442 200R4 G-Body Parts For Sale / Trade 2
wskirvin Olds 455 Parts G-Body Parts For Sale / Trade 3
C 78 Cutlass factory 305 to 71 455 olds Engine / Swaps / Driveability 35
kustomkyle Replacement air cleaner vacuum actuator, 307 Olds. Fuel / Air / Boost / Emissions 4
Bonnewagon Olds 403 value? General Discussion 67
80malibudriver hurst olds? General Discussion 5
P 1985 Olds 442 - 36k original miles G-Body Cars for Sale / Trade 9
Leolds88 CUTLASS My 88 Olds Cutlass. New Users 1
B OLDS Possible olds 425 engine purchase Engine / Swaps / Driveability 66
gharris79 CUTLASS My new 87 Olds T-Top Photos, Videos, etc. 1
blk7gxn Olds 442 For Sale---Not mine General Discussion 3
olds307 and 403 Long vs Short Tube Headers for the Olds V8 Exhaust 7
K Hi-test Olds 403 Engine / Swaps / Driveability 9
B OLDS Olds 403 with new CAMSHAFT fitment? Engine / Swaps / Driveability 31
L Neat little cooler to add to my Olds memorabilia collection... Oldsmobile Cutlass / 442 / Hurst/Olds 3
O Wanted 1981 Olds Cutlass front license plate holder Oldsmobile Cutlass / 442 / Hurst/Olds 0
Drkuhar Hurst olds hood scoop trim Body / Trim / Paint / Glass 4
MonicaTheMonte BUILD THREAD "Monica" 18 year olds 1982 Monte Carlo Full Custom Build G-Body Build Threads 7
R Swapping 455 Buick engine to 350 olds New Users 12
TURNA Olds intake exhaust crossover Engine / Swaps / Driveability 5
MrSony Iowa- 350 Olds Fuel Injection Intake and 455? General Discussion 5
P 1983 Hurst Olds Pricing Oldsmobile Cutlass / 442 / Hurst/Olds 11
V '87 Olds 442 Spline count? Transmission / Rear End / Driveline 2
O 79 regal olds 307 build. Gas line friver side. G-Body Build Threads 0
O 79 regal olds 307 new guy lots questions New Users 3
S Olds V8 squeaking noise, not belts Engine / Swaps / Driveability 20
H CUTLASS lifter replacement olds 350 Engine / Swaps / Driveability 10
azmusclecar Not sure what to offer for a set of 4 Olds SSII wheels 15X8 in good condition with rings and centercap. Wheels / Tires / Brakes 27
oldsofb OLDS Olds Rally Gauge Rebuild **VIDEO SERIES** How-To's / Knowledge Base 0
Similar threads


















































Please support GBodyForum Sponsors

Classic Truck ConsolesDixie Restoration DepotMike's MontesP-S-TSouthside Machine PerformanceUMI Performance

contact[email protected]for info on becoming a sponsor