So with the 84 vette I picked up last year, comes a 350 build for it. The factory L-83 is looking pretty tired and, I already have a spare 350 block meant for an 87 Monte Carlo build, already stripped down to the short block, and ready to be built up.

SO... the block is a 03970010 block with four bolt mains, a suffix code of 12/24TWZ, so its placed as a 1978 block that got a 4 barrel, and rated at 165hp. (There's another letter I cant remember, but it was where it was cast, which that I remember being St. Catharines)

USE: I plan to use this car as a street/track car. Hitting Mid-Ohio or Watkins Glen when visiting friends in NY is something i'd love to do, but also retain the manners to drive on the street, and meet friends for a car show. My goal is definitely 400+, 450 would be excellent, and 500 would be fantastic (How realistic 500 is, is up for debate) So with that, what I have so far for the build is as follows:

INTAKE: Here we're already going off the beaten path by choosing fuel injection on 45mm independent throttle bodies linked to a tunnel ram intake.



I had picked this intake up a few years back, but I remember it being cheaper than others and most recently... discovered the tolerances were off (mounting holes for the ITB's being off, or even the runners not lining up with the openings of the ITB's, so we're stuck doing some machining work to better align them. Also fabbing up some brackets and linkages to link all four sets of ITBs.

HEADS: The cylinder heads you see in those pics are the heads I plan to use, they are Dart Iron Eagles S/S #10024266. I bought them from a machine shop on Ebay who, I assume buys bare heads, and does the machine work before listing them. The specs of the work are as follows:

"67cc heart shaped combustion chambers, Straight plug design, High flow 165cc intake runners. Darts intake port volume chart rates these heads adequate for engines with a projected horsepower in the 400 HP to 450 HP range. Integral cast valve guides. Bolt holes on end of heads for all accessories. Heads have both the perimeter and center bolt holes for valve covers. These heads are assembled in our machine shop. Seat concentricy is checked. Assembled with Erson race series 1 piece EV-8 stainless 2.02 intake valves and 1.60 exhaust valves with chrome plated and undercut stems, swirl polished stem and hardened tips. New Erson .500 max. lift stock diameter valve springs with 120 lbs. of seat pressure, new steel retainers, hardened locks, and viton positive valve seals. Screw in rocker arm studs (3/8") and guide plates are also included."

CAMSHAFT: Now, I do have a Comp Cams 12-235-2 cam, but this is a left over from the Monte Carlo build, since it was believed to be a good match for the 200-4R's torque converter (I wouldnt need to drop the trans and replace it to accommodate the cam). However... this is irrelevant since the Vette is having its 700-R4 replaced with a "Black Tag" ZF-6, six speed manual.
So here im looking for advice on a good cam to use, what would work good with 1.5 ratio rockers, or even matched with 1.6 ratio?
I also read about cams utilizing a 4/7 and 2/3 lobe swap, or the "LS firing order", which can smooth out the exhaust note and better even out the load put on the main bearing. Of course im doing research on my end, but if someone has experience with the 4/7, 2/3 swap, please, let me know

CRANKSHAFT: One thing we're looking for is to bump the compression and im aware i'll need to spec the crank, rods, cyl head cc's and camshaft to suit. I think the 67cc chambers on the Dart Iron Eagles will suffice (i've seen people use 64cc chamber heads), but i've also seen other builds where people had 3.50" stroke crankshafts used instead of the factory 3.48". With the goal of 10.5:1 - 11:1 will I need that extra stroke? Will I need to go up to a forged crankshaft?

IGNITION: The ignition and fuel injection for that matter, will be run by a custom engine management system called Speeduino. It's an open source management system that can handle all engine management needs. They also utilize modern coil packs... i believe... LS1 style coils? I'll have to double check. But all of that can be handled by Speeduino, and being open source, it can be freely updated whenever needed.

So this is where I sit now with this 350 build. I have a good idea of where to go with it, but I also feel like im missing a few more bits of info, which... I hope to find here on the forums, or elsewhere on another forum. But these are the plans so far. The only other parts im think for it is to bore .030 over, and whether or not to leave it there or to go with a 383 stroker kit. The exhaust too will be sorted when the time comes, but at the moment I wanted to sort out the block itself.

So with that said, I'd love to hear what you guys think. Am I on the right track? Anything im overlooking, or requires further info? Any tricks, tips, clarifications would be greatly appreciated, thanks!