I’ve heard horror stories about the cost of Ferrari cam service. What would the typical service interval be for your 308?
Cam belt service interval is opening up a hornet's nest in the Ferrari world. The 365 BB (Boxer) and the 308 GT4, both introduced at the 1973 Paris Auto Show, were the first Ferrari engines utilizing timing belts. Ferrari went
very conservative and recommended belt changes at 3 years. Some people swear by that, others go by longer intervals. The problem is most Ferrari's are driven under 1000 miles a year and age comes into play. If the belt breaks the valves and pistons meet with horrific results.
On the 308/328 engines changing the belts is not hard, a Saturday afternoon at best but it often gets rolled into other services such as valve clearance adjustment, tune-up, water pump and total fluid changes "while we are in there" so the bill can add up to staggering levels if you pay someone to do the work. I do all my own work so for me it's just parts cost and since Ferrari often uses off the shelf parts also used on other brands the cost can be moderate with a little knowledge of what/where to obtain parts. The timing belt set (2 belts) was under $40 (Dayco) even though they are Ferrari specific, the dealer probably charges twice that or more.
The 308/328 engine placement is lateral, starting with the 348 the engines have been longitudinal which places the belts up against the bulkhead behind the seats. The 348 requires the engine to be pulled to access the belts. To their credit Ferrari made the engine/transmission and rear suspension as a modual that drops out with the use of a 2 post lift. Latter models had a access panel in the bulkhead to reach the belts.