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Stroke |
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3.000 |
3.040 |
3.080 |
3.100 |
3.125 |
3.250 |
3.480 |
3.500 |
3.562 |
3.625 |
3.750 |
3.875 |
4.000 |
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B |
4.000 |
302 |
306 |
310 |
312 |
314 |
327 |
350 |
352 |
358 |
364 |
377 |
390 |
402 |
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o |
4.030 |
306 |
310 |
314 |
316 |
319 |
332 |
355 |
357 |
363 |
370 |
383 |
395 |
408 |
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r |
4.060 |
311 |
315 |
319 |
321 |
324 |
337 |
360 |
362 |
369 |
375 |
388 |
401 |
414 |
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e |
4.125 |
321 |
325 |
329 |
331 |
334 |
348 |
372 |
374 |
381 |
388 |
401 |
414 |
428 |
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4.155 |
325 |
330 |
334 |
336 |
339 |
353 |
377 |
380 |
386 |
393 |
407 |
420 |
434 |
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Gear Ratios of |
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Common Transmissions Used In Racing |
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Saginsaw 3-Speed |
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Saginsaw 4-Speed |
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1st |
2nd |
3rd |
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1st |
2nd |
3rd |
4th |
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No
Lines |
2.85 |
1.68 |
1.00 |
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No
Lines |
2.84 |
2.01 |
1.35 |
1.00 |
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1 Line |
2.54 |
1.50 |
1.00 |
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1 Line |
2.54 |
1.80 |
1.44 |
1.00 |
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2
Lines |
3.11 |
1.84 |
1.00 |
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2
Lines |
3.11 |
2.20 |
1.47 |
1.00 |
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3
Lines |
3.50 |
1.89 |
1.00 |
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3
Lines |
3.50 |
2.47 |
1.65 |
1.00 |
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Second Design T-10 |
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Muncie 4-Speed |
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(Super T-10) |
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1st |
2nd |
3rd |
4th |
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1st |
2nd |
3rd |
4th |
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No
Lines |
2.56 |
1.91 |
1.48 |
1.00 |
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No
Lines |
2.43 |
1.61 |
1.23 |
1.00 |
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1 Line |
2.20 |
1.64 |
1.28 |
1.00 |
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1 Line |
2.64 |
1.75 |
1.33 |
1.00 |
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2
Lines |
2.52 |
1.88 |
1.46 |
1.00 |
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2
Lines |
3.42 |
2.28 |
1.46 |
1.00 |
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3
Lines |
2.88 |
1.91 |
1.33 |
1.00 |
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Gear Ratios |
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P Glide |
P Glide |
TH350 |
TH400 |
200-4R |
700-R4 |
4L60E |
4L80E |
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1st |
1.76 |
1.96 |
2.52 |
2.48 |
2.74 |
3.06 |
3.06 |
2.48 |
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2nd |
1.00 |
1.00 |
1.52 |
1.48 |
1.57 |
1.62 |
1.62 |
1.48 |
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3rd |
N/A |
N/A |
1.00 |
1.00 |
1.00 |
1.00 |
1.00 |
1.00 |
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4th |
N/A |
N/A |
N/A |
N/A |
0.67 |
0.70 |
0.70 |
0.75 |
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Dimensions |
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Case |
Overall |
Face To |
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Length |
Length |
Mount |
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TH350 (short) |
21 5/8" |
27 5/8" |
20 3/8" |
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TH350 (long) |
21 5/8" |
30 5/8" |
20 3/8" |
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TH400 (short) |
4.375" |
28 1/4" |
26 3/4" |
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Th400 (long) |
24 3/8" |
34" |
28" |
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200-4R |
27 3/4" |
27 3/4" |
26 7/8" |
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700-R4 |
23 3/8" |
30 3/4" |
22 3/8" |
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700-R4 (vette) |
23 3/8" |
30" |
22 3/8" |
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4L60E |
23 3/8" |
30 3/4" |
22 3/8" |
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4L80E |
26" |
31 1/2" |
30 3/8" |
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General
Motors Service Parts Small-Block Cylinder-Head |
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Identification
Guide |
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Heads Available from GM only, Unless
Otherwise Noted. |
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Intake- |
Combustion- |
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Part |
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Casting # |
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Runner |
Chamber |
Valve |
Spark |
Heat |
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Number |
Description |
Number |
Material |
Volume (cc) |
Volume (cc) |
Diameter |
Plugs |
Risers |
Notes |
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3958603 |
Service |
3991492 |
Cast Iron |
157 |
64 |
I: 1.94" |
Straight |
Yes |
Pressed Studs, No Guide Plates |
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Replacement |
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E: 1.50" |
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3987376 |
Service |
3991492 |
Cast Iron |
157 |
64 |
I: 2.02" |
Straight |
Yes |
Screw-in studs, pushrod guide
plates |
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Replacement |
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E: 1.60" |
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14034808 |
Service |
N/A |
Cast Iron |
161 |
76 |
I: 1.94" |
Straight |
Yes |
Pressed studs, no guide plates |
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Replacement |
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E: 1.50" |
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464045 |
Service |
462624 |
Cast Iron |
161 |
76 |
I: 2.02" |
Straight |
Yes |
Screw-in studs, pushrod guide
plates |
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Replacement |
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E: 1.60" |
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14101127 |
Corvette |
10088113 |
Aluminum |
163 |
58 |
I: 1.94" |
Angled |
No |
Bare, w/ seats and guides |
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E: 1.50" |
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10088115 |
Corvette |
10088113 |
Aluminum |
163 |
58 |
I: 1.94" |
Angled |
No |
Assembly w/ springs, valves,
studs, and guide plates |
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E: 1.50" |
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10134338 |
350-HO |
10088113 |
Aluminum |
163 |
58 |
I: 1.94" |
Angled |
No |
As above, but w/ HD valve
springs |
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E: 1.50" |
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14011058 |
Bow-Tie |
14011034 |
Cast Iron |
190 |
64 |
I: 2.02" |
Angled |
No |
Off-highway cast iron head |
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E: 1.60" |
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10134392 |
Revised |
14011034 |
Cast Iron |
190 |
64 |
I: 2.02" |
Angled |
No |
Latest revision of
14011058-ordering this P/N guarantees obtaining latest casting |
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Bow-Tie |
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E: 1.60" |
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10051108 |
Semi-Finished |
14011034 |
Cast Iron |
190 |
64 |
I: 2.02" |
Angled |
No |
No spark plug and pushrod holes |
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Bow-Tie |
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E: 1.60" |
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10051167 |
Phase 6 |
14011049 |
Aluminum |
180 |
55 |
I: 2.02" |
Angled |
No |
Standard port location,
NASCAR-legal |
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Bow-Tie |
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E: 1.60" |
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14011049 |
Phase 6 |
14011049 |
Aluminum |
180 |
55 |
N/A |
Angled |
No |
No seats, guides and pushrod
holes, NASCAR-legal |
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Bow-Tie |
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