RandyN

There are Two(2) types.... a long and a short runner, it all depends on what you're gonna use it for.... Kevin Roy at Murray's Speed and Custom in Miami, Fl. Tel: 305 687 7301 Ext 225 will be able to help or direct you.

Those three holes on the cam sprocket is not to compensate for chain stretch, when a chain stretches the crank angle and cam angle veer further apart, which is not good at all, 0 deg crank angle should be 0 degree cam angle. Every two rotations of crank delivers one rotation of cam, with a degree of differential between the two it will only give incorrect cam to crank geometry, hence the reason for the two bright links on the original Nissan Timing chain, these two bright links are to be positioned on the dots of the cam gear and the crankshaft's distributor drive gear. The three holes on the cam sprocket is to accomodate any cam degree advance neccessary at time of installation of camshaft this will be determined by the cam designer/manufacturer...... I will assist anyway I can.... forward onwards Z lovers

Good morning sblake01.... I've been researching on the restroking of these L motors, and I've found one company in particular that specializes in this feat. They have gotten normally aspired 365 BHP, 305 Lb Ft of torque, through 3 Mikunis, out of these blocks, but they were not at 2.8, 3.0 nor 3.1, they are at 3.350 L. What are your opinions on this? Thanks.....

sblake01 is correct, if you don't realign your dist drive shaft to the proper position you will runn out of adjustment, also the more base fuel you run into your cylinders, the more timing you'll be able to run. What spark plugs are you running in your motor? With the proper plug in there, it'll help you get up to the required race timing of 19 Deg BTDC, which is equivalent to 38 Deg of total timing.

My motor has 306 Deg .595" Lift Isky, with power from 4500 - 8500 rpm, redlining at 9300 rpm, this motor pulls the rpm like a GSX-R1000, with Crower Rods, Ross slugs, High volume Oil pump, Tilton 10 Lb Flywheel, Centerforce II Plate and a 4 puck disc..... MSD 6AL and a Programmeable Timing Comp. To finsh it off, a 150 HP Fogger shot of Nitrous Oxide, this does bring the dyno to 420 BHP

Good day XRAY,.... I've been working on these L28 over 12 years now, and the distributor shaft is supposed to be at 11:25, we've gotten these engines breathing through triple Mikunis at 270 BHP and 225 Lb Ft, 19 deg of ign timing, with zero detonation........