Howell will use whichever O2 you specify, and if you didn’t specify one then it would default to an AC Delco AFS93 O2 sensor which is the connector you have. Get a pair of AFS93s
If it’s the same year engine no. But like it was mentioned if you are putting a later engine in the cam sensor plug is different. It pins out the same but the orientation tab in the connector is in a different spot.
diesel-powered.com
It is unlikely that Generac builds that engine. They are just like countless other genset companies that buy engines from various suppliers. Things get rather convoluted with industrial power but that engine is based on a Gen VI, basically 1996-2000 L21/L29 454. Where things get convoluted is like how PSI builds 8.8L based upon the 8.1L, a competitor of PSI called, Power Integration, began producing the Gen VI around 10 /15 years or so ago under license from GM. That happened before the 8.8L was even born. They offered it in a few different displacements beginning with an 8.0L, which Freightliner used in their school bus and a few medium duty trucks running on propane. This engine was also available through GM Performance Parts. We looked at the PI 8.0L for our school bus line before signing an agreement with PSI for the 8.8L as there was an emissions certification issue for on-road use. In the end, it was never was recertified for on-road use and Freightliner lost access to it.Anyone know much about the General 9.0L?
Does it have the 8.8L heads or something different? Intake manifold is definitely different.
4.5” bore and 4.25” stroke. Says it has a cast crankshaft. 9.0L block with a 8.8L crankshaft sounds like it would be a really good starting point.
Looks like you can even get them with a carburetor type intake with a hei distributor.
Generac Engine in Crate, Unused Surplus, Year 2018, 9.0 L V8, Replacement Engine, Natural Gas or Propane
Stock # IEEN- 614-GN Inventory Sheet Engine/Pwr Unit Price $ 6,900 Description New Generac Engine in Crate, Unused Surplus, Year 2018, 9.0 L V8, Replacement Engine, Natural Gas or Propane Make Gen…
Does the 8.0L and the 9.0L use 8.1L type intake ports or 8.8L type?
I can't answer that, as I've never seen a 8.0 or 9.0 with the intake off. Their port injected intake did look much different from the L29 so I suspect the ports are entirely different in the same way the 8.8 intake ports are different from the 8.1. Although, the L29 heads may go on a 8.0/9.0 in the same way the 8.1 heads can go on an 8.8. Their just big kid Legos
I wouldn’t put a carburetor on it either. Just wanted the classic looks really. Would machine the intake for injectors and run a throttle body. I would rather use the 8.8L heads and I was hoping that is what the 9.0L uses.I can't answer that, as I've never seen a 8.0 or 9.0 with the intake off. Their port injected intake did look much different from the L29 so I suspect the ports are entirely different in the same way the 8.8 intake ports are different from the 8.1. Although, the L29 heads may go on a 8.0/9.0 in the same way the 8.1 heads can go on an 8.8. Their just big kid Legos
Interesting about the Dart intake. I personally would have never bought one to drop a toilet carburetor and ancient distributor in a late model engine but I could see the desire to do so. There was a guy in the Facebook Group that did a carb and dizzy in a 70 Chevelle SS and it looked 99% period correct without the unsightly coil packs on the valve covers. That was cool
Unortunately, I doubt 8.8 heads would fit on the 8.0/9.0 being its Gen VI based. The 8.1/8.8 use two additional head bolts on each head than the older Gen VI. You might ask around the 8.8L Facebook group though. There are quite a few guys kitbashing big blocks of all generations there. The group is called "8.8L PSI Big Block Chevy World". Those dudes are probably familiar with this 9.0 too, especially a guy named Hank Slocum....seriously, that's his name
I still have some parts from a Mark IV Merlin block 632 that I ran years ago. The thing that I like about the 8.8L is the block, crank and heads are really good in factory form. Just rework the heads, use some inexpensive 6.7000 BBC rods and off the shelf pistons and you have a really nice 535 that I don’t think a Gen VI big block can accomplish for any where near the same cost. The only real problem is there are pretty much no aftermarket intakes available for it. You can get a 8.8L off of eBay for $1200 that the block can usually just be honed and the crank polished.
What parts are left?
