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4150 4778 Holley carb questions

General engine tech -- Drag Racing to Circle Track

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Bill Chase
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Joined: Tue Aug 27, 2019 1:11 pm
Location: Michigan

4150 4778 Holley carb questions

Post by Bill Chase »

I picked up a 4778 700 cfm double pumper from a friend, it was drained and stored properly a couple years ago. I bought a quick fuel basic rebuild kit for it. I hope to simply freshen it up and use it on a budget, but rather "rowdy" street strip toy. 350 l83 crossfire corvette bottom end, probably a set of engine quest 200cc vortecs and a healthy solid roller with springs to match, will be around 10-10.5 to 1 compression and the plan is go essentially run it until it breaks. The car is a 4+3 and has 3:45 rear gears.

Any tips or tricks for this carb, it will be street driven, but only for occasionally cruising and or grudge racing with friends etc, so losing bottom end isnt a concern, I have a 7101 edelbrock performer rpm that I planned to use, along with long tube headers with 1-5/8 primaries.

Any suggestions for baseline jetting or modifications to make this more easy to tune? I have an innovate mtx-l I'll use to tune it, but was hoping for some tips and tricks from those far more skilled than I to establish a baseline jetting and setup???
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