Vbb199
B-rate Hillbilly Customs
- Joined
- Jan 12, 2018
- Posts
- 9,041
- Reaction score
- 15,333
- Location
- Salisbury NC
- First Name
- Vince
- Truck Year
- 89, 79
- Truck Model
- 89 Suburban R1500, 79 C10
- Engine Size
- 350, 502
8 MPG?
- Thread starter MisterB
- Start date
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Raybo135
Full Access Member
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- Jan 20, 2019
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- 296
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- 310
- Location
- Arvada, Colorado
- First Name
- Raymond
- Truck Year
- 1976
- Truck Model
- K10 Silverado
- Engine Size
- 400
MikeB
Full Access Member
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- Apr 4, 2014
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- 1,775
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- 1,004
- Location
- North Texas
- First Name
- Mike
- Truck Year
- 1969
- Truck Model
- C10
- Engine Size
- 355
Well said, and funny!
MikeB
Full Access Member
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- Apr 4, 2014
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- Location
- North Texas
- First Name
- Mike
- Truck Year
- 1969
- Truck Model
- C10
- Engine Size
- 355
Best part was seeing the look on some rich punk daddy-bought-me-my-car face as a lifted truck smoked them in the 1/4. 13.2 to 13.3 on average. I grinned a lot
I guess that's why I had to feather foot a lot to payday. lol
MikeB
Full Access Member
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- Apr 4, 2014
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- Location
- North Texas
- First Name
- Mike
- Truck Year
- 1969
- Truck Model
- C10
- Engine Size
- 355
Correct! For a 350, compression with 64cc heads and .043" quench height would be anywhere from 10.0:1 with flat tops (with 4 valves reliefs) to 9.4:1 for a Speed Pro hyper-eutectic with 12cc dish to around 9.0:1 - 9.2:1 for a stock type piston. (I don't recall the dish size, so I'm guessing.)
Keep in mind that some aftermarket pistons are "shorter" (lower compression height) than stock pistons to accommodate severe block surface machining (decking).
MisterB
Full Access Member
- Joined
- Sep 9, 2019
- Posts
- 676
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- 845
- Location
- Northwest
- First Name
- AJ
- Truck Year
- 1980
- Truck Model
- GMC K2500 4X4
- Engine Size
- 350
I decided to connect the vacuum gauge to the very back of the carb in the large port in the middle that was plugged. It was still in that red zone, so I adjusted the idle and also lean/rich and as you can see I got it up in the green zone. Time will tell, but so far the truck seems to run really well
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