Does anyone have the stock 6.1 deck height?

Thank you in advance.

deck?:confused:

If you mean front end ground clearance, it's 7 inches.

The Piston Deck Height is the distance the piston EDGE is in relation to the top of the cylinder deck.

I need the distance from the crank center to the block deck.

Thank you.

building your own stroker kit?

We're trying to put together a low compression stroker if there is enough room.

We need the piston pin diameter, rod length, stroke, crank center to deck height and to develop the piston and ring package to handle big boost for huge power.

Thanks

We're trying to put together a low compression stroker if there is enough room.

We need the piston pin diameter, rod length, stroke, crank center to deck height and to develop the piston and ring package to handle big boost for huge power.

Thanks Several shops have already done this. Heat Performance has built a 426" stroker. Hennissey has built a 6.4L stroker. A local shop has also built a 6.4L with an offset ground crank. Contact one of these shops as they have already built a stroker engine. One thing the SRT Engs did was to move the cam shaft upward to allow for stroking. Overboring is a problem because of the cylinder wall thickness and possible over heating problems. HTH Gene

I've read that the Deck height (Centerline of crank to cylinder head deck face) is 9.250" inches.

I've read that the Stock 6.1 Rod Length 6.243" Center to Center.

Can anyone else confirm these measurements?

Can anyone tell me the stock 6.1 piston pin diameter?

Thank you again,

Radshop

Here are some 6.1 specs for you. I hope it is usefull to you. I have been around several 6.1L(370 ci) stroker builds(6.4L 392 ci, 6.8L 413 ci, 7.0L 426 ci, etc.) so if there is anything I can help you with let me know.

6.1L ENGINE
GENERAL DESCRIPTION DESCRIPTION SPECIFICATION
Engine Type 90° V-8 OHV
Displacement 6.1 Liters
370 ( Cubic Inches)
Bore 103 mm (4.055 in.)
Stroke 90.9 mm (3.58 in.)
Compression Ratio 10.3:1
Firing Order 1-8-4-3-6-5-7-2
Lubrication Pressure Feed - Full Flow
Filtration
Cooling System Liquid Cooled - Forced
Circulation
Cylinder Block Cast Iron
Cylinder Head Aluminum
Crankshaft Forged Steel
Camshaft Hollow Assembled Camshaft
Pistons Aluminum Alloy
Connecting Rods Powdered Metal

CYLINDER BLOCK DESCRIPTION SPECIFICATION
Metric Standard
Cylinder Bore Diameter 103 mm 4.055 in.
Out of Round (MAX) 0.008 mm 0003 in.
Taper (MAX) 0.0127 mm 0.0005 in.
Lifter Bore Diameter 21.45 - 21.425 mm 0.8444 - 0.8435 in.

PISTONS DESCRIPTION SPECIFICATION
Metric Standard
Clearance 0.0245 - 0.0515 mm 0.00096 - 0.0020 in.
Measured at 38.0 mm ( 1.5 in.) Below Deck
Ring Groove Diameter
Groove #1 93.1 - 93.4 mm 3.665 - 3.677 in.
Groove #2 91.6 - 91.8 mm 3.606 - 3.614 in.
Weight 435 grams 15.34 oz
Piston Length 54.70 - 55.30 2.153 - 2.177 in.
Ring Groove Width
No. 1 1.51 - 1.54 mm 0.0594 - 0.0606 in
No. 2 1.51 - 1.53 mm 0.0594 - 0.0602 in.
No. 3 3.030 - 3.055 mm 0.1192 - 0.1202 in.

PISTON PINS DESCRIPTION SPECIFICATION
Metric Standard
Clearance In Piston 0.006 - 0.015 mm 0.00023 - 0.00059 in.
Diameter 25.0 - 25.003 mm 0.9843 - 0.9844 in.
Length 64.785 - 65.215 mm 2.551 - 2.568 in.

PISTON RINGS DESCRIPTION SPECIFICATION
Metric Standard
Ring Gap
Top Compression Ring 0.30 - 0.40 mm 0.0118 - 0.0157 in.
Second Compression Ring 0.35 - 0.60 mm 0.0137 - 0.0236 in.
Oil Control (Steel Rails) 0.20 - 0.71 mm 0.0079 - 0.028 in.
Side Clearance
Top Compression Ring .02 - .068 mm 0.0007 - 0.0026 in.
Second Compression Ring 0.02 - 0.058 mm 0.0007 - 0.0022 in.
Oil Ring (Steel Ring) .019 - .229 mm .0007 - .0091 in.
Ring Width
Top Compression Ring 1.472 - 1.490 mm 0.0579 - 0.0586 in.
Second Compression Ring 1.472 - 1.490 mm 0.0579 - 0.0586 in.
Oil Ring (Steel Rails) 0.447 - 0.473 mm 0.0175 - 0.0186 in.

CONNECTING RODS DESCRIPTION SPECIFICATION
Metric Standard
Piston Pin Bore Diameter 23.955 - 23.975 mm 0.9431 - 0.9438 in.
Side Clearance 0.10 - 0.35 mm 0.003 - 0.0137 in.

CRANKSHAFT DESCRIPTION SPECIFICATION
Metric Standard
Main Bearing Journal Diameter 64.988 - 65.012 mm 2.5585 - 2.5595 in.
Bearing Clearance 0.023 - 0.051 mm 0.0009 - 0.002 in.
Out of Round (MAX) 0.005 mm 0.0002 in.
Taper (MAX) 0.003 mm 0.0001 in.
End Play 0.052 - 0.282 mm 0.002 - 0.011 in.
End Play (MAX) 0.282 mm 0.011 in.
Connecting Rod Journal Diameter 53.992 - 54.008 mm 2.125 - 2.126 in.
Bearing Clearance 0.020 - 0.074 mm 0.0007 - 0.0029 in.
Out of Round (MAX) 0.005 mm 0.0002 in.
Taper (MAX) 0.003 mm 0.0001 in.

CAMSHAFT DESCRIPTION SPECIFICATION
Metric Standard
Bearing Journal Diameter
No. 1 58.2 mm 2.29 in.
No. 2 57.8 mm 2.27 in.
No. 3 57.4 mm 2.26 in.
No. 4 57.0 mm 2.24 in.
No. 5 43.633 mm 1.72 in.
Bearing To Journal Clearance Standard
No. 1 0.040 - 0.080 mm .0015 - .003 in.
No. 2 0.050 -0.090 mm 0.0019 - .0035 in.
No. 3 0.040 - 0.080 mm .0015 - .003 in.
No. 4 0.050 - 0.090 mm 0.0019 - .0035 in.
No. 5 0.040 - 0.080 mm .0015 - .003 in.
Camshaft End Play .080 - 0.290mm 0.0031 - 0.0114 in.

VALVE TIMING @ SAE 0.006” DESCRIPTION SPECIFICATION
Intake
Opens (BTDC) 15.0°
Closes (ATDC) 268.0°
Duration 283.0°
Exhaust
Opens (BTDC) 251°
Closes (ATDC) 35°
Duration 286.0°
Valve Overlap 50°

CYLINDER HEAD DESCRIPTION SPECIFICATION
Valve Seat Angle 44.5° - 45.0°
Valve Seat Runout (MAX) 0.05 mm (0.0019 in.)
Valve Seat Width (Finish)
Intake 1.18 - 1.62 mm
(0.0464 - 0.0637 in.)
Exhaust 1.48 - 1.92 mm
(0.0582 - 0.0755 in.)
Guide Bore Diameter (Std.) 7.975 - 8.00 mm
(0.313 - 0.314 in.)

HYDRAULIC TAPPETS DESCRIPTION SPECIFICATION
Metric Standard
Body Diameter 21.387 - 21.405 mm 0.8420 - 0.8427 in.
Clearance (To Bore) 0.020 - 0.063 mm 0.0007 - 0.0024 in.
Dry Lash 3.0 mm (at the valve) 0.1181 in.

VALVES DESCRIPTION SPECIFICATION
Face Angle
Intake 45.5° - 46.0°
Exhaust 45.0° - 45.5°
Head Diameter
Intake 52.67 - 52.93 mm
(2.07 - 2.08 in.)
Exhaust 40.37 - 40.63 mm
(1.57 - 1.60 in.)
Length (Overall From Gage Line)
Intake 124.38 - 124.76 mm
(4.897 - 4.912 in.)
Exhaust 122.47 - 122.85 mm
(4.822 - 4.837 in.)
Stem Diameter
Intake 7.734 - 7.954 mm
(0.312 - 0.313 in.)
Exhaust 7.930 - 7.950 mm
(0.312 - 0.313 in.)
Stem - to - Guide Clearance
Intake 0.021 - 0.066 mm
(0.0008 - 0.0025 in.)
Exhaust 0.025 - 0.070 mm
(0.0010 - 0.0028 in.)
Valve Lift ( @ Zero Lash)
Intake 14.5 mm (0.571 in.)
Exhaust 14.0 mm (0.551 in.)

VALVE SPRING DESCRIPTION SPECIFICATION
Spring Force (Valve Closed)
Intake 445.0 N +/- 22.0 N @ 47.5 mm (99.0 lbs +/- 4.0 - 9.0 lbs. @ 1.870 in.)
Exhaust 445.0 N +/- 22.0 N @ 45 mm (99.0 lbs +/- 4.0 - 9.0 lbs. @ 1.772 in.)
Spring Force (Valve Open)
Intake 1450.0 N +/- 68.0 N @ 33.0 mm. ( 325.5 lbs. +/- 15.3 lbs. @ 1.3 in. )
Exhaust 1450.0 N +/- 68.0 N @ 31.0 mm. ( 325.5 lbs. +/- 15.3 lbs. @ 1.22 in. )
Free Length (approx) 57.3 mm (2.256 in.)
Number of Coils
Intake 7.35
Exhaust 7.0
Wire Diameter
Intake and Exhaust 5.65 × 4.51 mm
(0.222 - 0.178 in.)
Installed Height (Spring Seat to Bottom of Retainer)
Intake 47.5 mm (1.870 in.)
Exhaust 45.0 mm (1.772 in.)

OIL PUMP DESCRIPTION SPECIFICATION
Clearance Over Rotors (MAX) 0.095 mm (0.0038 in.)
Outer Rotor to Pump Body Clearance (MAX) .235 mm (.009 in.)
Tip Clearance Between Rotors (MAX) 0.150 mm

Thank you 6.1 Turbo,

Do you know the head gasket thickness and bore diameter so I can fiqure out the gasket volume and piston to head clearence? The cylinder head volume I read is 72cc. Can you confirm this also?

Thanks again,

Radshop

You can get head gaskets from Cometic in just about any thidkness you need. I have 74cc for the cylinder head volume in my notes but it can vary.