Description

Ferrari 246 GT, 246 GTS 1976 Workshop Manual

If you’re wrenching on a Dino and you don’t have factory specs, you’re wasting time and risking a seized engine. I’ve seen guys follow aftermarket reprints that left out the crankshaft bearing clearance changes Ferrari made after chassis 02132. That’s why this Ferrari 246 GT, 246 GTS 1976 Workshop Manual matters. It’s a direct translation of the official SFAC repair manual, printed in 1976, with 258 pages of data Ferrari intended for their own techs. The addenda section alone covers variations from vehicle number 01118 to 02130 and then from 02132 onward. If your car falls in that range, you need those pages. Without them, you’ll assemble the valvetrain to the wrong spec and wonder why it knocks at 4,000 RPM.

Engine Section: What You Get on Page 9

Section 2 of this manual starts on page 9 and runs through the entire engine—disassembly, inspection, reassembly. It covers the 2.4L V6 with its chain-driven twin cam heads. The factory procedure for setting valve timing is laid out with specific angles and lock-tab positions. You also get the piston ring end-gap ranges and the main bearing cap torque sequence. That’s data you won’t find in any generic Italian car book. Page 9 is where you start before you pull the first bolt. Ignore it and you’re guessing.

Torque Specs Listed on Page 140

Chassis torque specifications live on page 140, right after the brakes section. These are the numbers for suspension arms, steering knuckles, and wheel hub nuts. Every value is given in kilogram-meters (metric), but the manual includes conversion tables on page v so you can work in pound-feet if that’s what your clicker reads. I keep a copy of page 140 taped to my toolbox when I’m doing a Dino front-end rebuild. One wrong torque on the lower A-arm pivot and the bushing shifts under load. That’s a pull-over-and-park problem.

Two-Part Manual: Addenda and Main Instructions

The first 61 pages are the addenda section—supplements that Ferrari issued for later production cars. If you own a 246 GTS from chassis 01118 or later, you must cross-reference the addenda with the main repair instructions. For example, the air conditioning installation details are on page 27 of the addenda, and the engine crankcase ventilation changes are on page 37. The main manual (Part II) then covers everything from general data (page 3 of Part II) through the chassis section ending on page 151. That’s two separate page-numbering systems, but the table of contents makes it clear which section applies to which chassis range.

Does This Manual Cover the Fuel System?

Yes. The carburetion (fuel feed) subsection lives under Section 3, starting on page 57. It details the Weber carburetors, float levels, and the mechanical fuel pump. The manual also walks through synchronization of the triple carbs—something that many aftermarket guides gloss over with a vague “adjust until smooth” line. Here you get the actual manifold vacuum specs and the throttle linkage travel dimensions. If you’re chasing a flat spot at 3,000 RPM, start at page 57 and work through the circuit checks in order.

Why OEM Documentation Beats Aftermarket Reprints

Aftermarket manuals for the Dino are notorious for cutting corners—they shrink the wiring diagrams, omit the addenda, or convert torque values incorrectly. This copy is a direct scan of the original 1976 translation by Angelo Wallace. The copyright page is included, the Italian wording is translated verbatim, and no data has been removed. When you buy this, you get the same pages Ferrari service writers used in the 1970s. For a car whose engine uses a timing chain that stretches with age, having the correct factory tolerances can mean the difference between a rebuild that lasts 50,000 miles and one that lasts 20,000. For a larger V12 project, check the Ferrari Testarossa Workshop Manual – 557 Pages of OEM Specs or the Ferrari 550 Maranello Workshop Manual Volume 2 if you need modern fuel injection data. The Ferrari Workshop Manual CHALLENGE STRADALE also covers the later V8 platform. For background on how manual transmissions work in these cars, read Manual Transmission theory, and for a broader industry context see Automotive Industry Overview.

Frequently Asked Questions

Does this manual include wiring diagrams?

Yes, Section 9 covers electrical equipment starting on page 143, with full wiring routes and component locations.

What about the 246 GTS differences?

The addenda section explicitly covers variations from vehicle number 01118 to 02130 and from 02132 on, which includes the GTS. Check your chassis number and follow the cross-reference.

Are the torque specs in imperial or metric?

All specifications are in metric (kg·m) as printed by Ferrari. A conversion table on page v lets you convert to pound-feet accurately.

Can I use this manual for a 1973 Dino that isn’t in the chassis range listed?

If your car is below chassis 01118, the main manual (Part II, 190 pages) applies without addenda. If above, you must cross-reference both sections. The manual covers the 246 GT and GTS from the start of production through 1976.

That’s what 258 pages of factory data look like when there’s no filler. You get the engine rebuild sequence, the clutch adjustment procedure, the rear axle preload method, and the brake bleeding order—everything in the order Ferrari designed it. Access the Factory Manual and put it on your workbench before you touch a single 10mm bolt on that Dino.