K5 series Blazer; 86; 5.7 automatic w NP208 4x4. Vintage square body at it's finest. However:
Anyone know the original carb cfm spec? Currently running a Holley 650 w vac secondary but it seems a bit above for the factory engine. Seems like the accelerator pump is way too strong (low rpm stall).
Aside, great vac pressure; perfect compression and new Edelbrock mechanical fuel pump pressurizing well within spec.
Engine not an issue. Fresh rebuild less than a year.
Chokes from 800-1300 rpm if you hit her hard and upper range everything is fine following.
Not looking for an aftermarket fix....just am trying to find the original 5.7/350 ci spec and can't seem to locate to benchmark the jets.
All help appreciated.
I've played with the accelerator quite a bit and it still bogs. Considering a retro back to a vintage Rochester. 4951