305 to 427

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80sman

Junior Member
Joined
Jun 17, 2025
Posts
15
Reaction score
14
Location
Franklin NH
First Name
Edward
Truck Year
1984
Truck Model
K10
Engine Size
350
The bearing look great which is a relief
 

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80sman

Junior Member
Joined
Jun 17, 2025
Posts
15
Reaction score
14
Location
Franklin NH
First Name
Edward
Truck Year
1984
Truck Model
K10
Engine Size
350
Stumbled across this the other day. Cam card that went to this 427, not sure if its special grind because its the reverse rotation cam or if its what's in it now
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80sman

Junior Member
Joined
Jun 17, 2025
Posts
15
Reaction score
14
Location
Franklin NH
First Name
Edward
Truck Year
1984
Truck Model
K10
Engine Size
350
Ignore my string throttle and the crap in the bed. Alot of stuff flew out this ride, got to eager to go for a ride. Magneto is getting sent out for a rebuild and a advance curve put in then ill put more time into tuning the engine. Ran a compression test, 210 psi thats at starter rpm with all plugs out. I think the cam can change what it makes for compression at different rpms?

427 open headers, 45*f out today
 

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