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It's funny how many Olds 260 and 307's I have seen with the base timing set way too retarded. I suspect many of them had bad EGR valves which caused pinging thus the timing was dialed back until the knock was gone. My buddy has a 79 Calais coupe with the 260 and set the base timing to 22 degrees...

Limited was primarily appearance and interior upgrading. You got Limited badges, upgraded 60/40 split front seats with pillow back cushions, extra sound insulation, door frame moldings, lower wide chrome molding and some other minor appearance items like upgraded door panals etc. There was never...

The 1978-1988 A/G body cars were GM's second answer to the 1973 Oil Embargo. The 1977 B and C-body downsized full sized cars were so well received by the buying public that GM decided to capitalize on round two with the A-body intermediate cars. The Monte Carlo, Grand Prix, Regal and Cutlass...

A few things to keep in mind. The 1980-81 Full sized Devilles/Fleetwoods used Cadillacs 368 V8 tied to the THM 400 transmission which is nearly bulletproof. The problem with the 81 setup was the 8-6-4 variable displacement system that Caddy used. This can be bypassed so that the engine runs like the...

Just curious what engine it is? The fact that the engine was started periodically is a good thing so that it didn't set up. The brakes however are probably set and may need to be freed up along with the ebrake if it was used. Tires will likely be dry rotted. Vacuum lines will be shot. You will...

All 1980 Grand Prix SJ's got the W72 code 170 HP 301 4BBL V8 and 2.93:1 rear gears unless yours was a California car in which case it would have a Chevy 305 with 2.73:1 rear gears. The 1980 Grand Am and Trans Am also got this same engine as std fare. I used to own a 1980 SJ GP. It was...

I had two 1980 Grand Prixs. For 1980 this car was offered in three models. Base, LJ and sportier SJ. The base car had a solid bench seat and less exterior chrome and the stand up hood ornament was optional. The LJ was considered the luxury and the SJ was the sporty model with bucket seats...

Every 78-84 Calais coupe had std reclining buckets along with the 85-87 Salon coupes. Base model coupes with optional buckets seats did not come std with recliners. You could order a passenger recliner but not a driver side. All 1988 Classic coupes with optional buckets came with recliners on...

If your rear end is the original 7.5 it will most likely have the 2.41:1 gears. 2.73, 3.08 and 3.23 were all options on V6 sedans and wagons in the Cutlass line in these and most years. Try and find the production code sheet under the drivers seat or possibly in one of the door panals. This will...

These 3.3 liter 200 V6's were factory rated at 95 HP and 160 torque which oddly enough was about what a 3.7 liter Slant 6 put out in the same time period with the 1BBL carb. The trouble is the 3.3 didn't make the low end torque that the Chrysler motor did and never seemed quite as peppy. A 3.8...

Olds made 180 HP from the 307 with but a different cam, slightly richer secondaries, dual snorkle air cleaner and stiffer valve springs and of course the dual exhaust system. 200 HP should be easily obtainable with a roller "Y" 7 A head motor with some of todays mods. Start with the exhaust and...

I would have to look at production numbers but I'm sure 1978 had lower production than 79 or 80 because it was the first year that the new downsized model came out and many buyers resisted the change. 1978 was also the only year that 49 state cars came with the Chevy 305 2 or 4BBL V8 option...

The B84 bodyside molding was an option across the board on every Cutlass coupe or sedan regardless if it was a base, Brougham, Salon, Calais, 442 or W-30. The molding from the factory ran down the middle of the doors and extended to the back quarter. If the back quarter is missing chances are...

Olds Cutlass Salon coupes with the 231 V6 weighted in around 3250 and 307 cars were a hair under 3400. If your car is fully loaded with options such as moonroof, power options like seats etc add a few more pounds to each of those quoted figures.

1985 Grand Prix info 305 4BBL V8(LG4) HP- 165 torque- 245 THM 200 Metric transmission first gear 2.74:1 second 1.57:1 third 1:1 Rear axle ratio code GH2 2.29:1 Optional THM 200R4 overdrive automatic trans first gear 2.74:1 second 1.57:1 third 1:1 fourth .67:1 rear axle ratio code GU2 2.41:1 Check...

The Grand Prix introduced the 5.7 diesel option in 1981 which was also the year the A/G cars were given there new bodies. The diesel cars benefitted from extra sound insulation, HD F-40 springs, thicker carpet, guage package minus tach and aluminum hood, radiater support and bumper backing...

I'm waiting to see if my 1982 Regal Turbo coupe sells. There is a guy hot on it but hasn't got his tax refund yet so heres for hoping. As for options the original lady owner said she bought the car as a leftover in late 1981 when the 1982's were out. It has the following: 4.3 liter 2 BBL LS4 V8...

Your not looking for a race car so why bother going to all the hassle, money and time to swap engines. There is plenty of power hidden in your stock 305 4BBL MC to make it a lot more enjoyable as a daily driver. The 1979 LG4 vin code "H" 305 put out 160 HP stock which isn't bad but more power is...

If that is a regular Calais it will only have a 7.5" rear end. Only the 1983-87 Hurst/442 had the 8.5" rears. Not sure about the 1979/80 W-30 cars but I would guess those were 8.5's too. Normal Calais Cutlass models used the same powertrains and axle ratios as base Supreme models which means if...

Assuming your drivetrain is original you would have the vin code "H" 305 4BBL from Chevy with 200 R4 overdrive transmission. They did pair up the 305 with the Metric 200C in that year also but from what it sounds like you have the overdrive transmission. The 301 Pontiac engine died in April of 1981...