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yup gm lists the 3.4 iron head gen 1 as being 9.0:1 compresion. NOT 9.6:1
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I guess I'll post in the DOHC section for that chamber volume.
Thanks guysCurrent:
\'87 Fiero GT: 12.86@106 - too dam many valves; ran 12.94 @ 112 on new engine, then broke a CV joint
\'88 Fiero Formula: slow and attention getting; LZ8 followed by LLT power forthcoming
\'88 BMW 325iX: The penultimate driving machine awaiting a heart transplant
Gone, mostly forgotten:
\'90 Pontiac 6000 SE AWD: slow but invisibleComment
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New info on TDC's:
Code:Application Dish/Dome C/H 2.8 LO 0 cc's 1.578 2.8 HO 0 cc's 1.599 3.1 12 cc's 1.450 3.4 8 cc's 1.457 2.8 Gen2 21.2 cc's 1.608 3.1 Gen2 26.4 cc's 1.450 3100 24.5 cc's 1.470 3400 27 cc's 1.460 TDC 5 cc's 1.457 DOHC 5 cc's 1.457 Head Chamber size Gen1 48.5 cc's Gen2 26.4 cc's Gen3 26.4 cc's TDC 54.0 cc's DOHC 51.5 cc's Misc: Gen2 stock head gasket: 0.060 Gen1 stock head gasket: 0.040Current:
\'87 Fiero GT: 12.86@106 - too dam many valves; ran 12.94 @ 112 on new engine, then broke a CV joint
\'88 Fiero Formula: slow and attention getting; LZ8 followed by LLT power forthcoming
\'88 BMW 325iX: The penultimate driving machine awaiting a heart transplant
Gone, mostly forgotten:
\'90 Pontiac 6000 SE AWD: slow but invisibleComment
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My Sealed power piston book has these numbers listed for Compression Height:
2.8L
Compression height 1.598 or 1.578
3.1L vin "T" and "D" 1.442 comp height.
3100's 1.480
3.4L 93-95 "S" iron head 1.450
3.4L 96-03 Ld Truck/Car 1.478
3.4L DOHC 1.464 (uses 1.20 top ring, 1.50 2nd, 3.0 oil)
or 3.4L dohc 1.458 Plus .040 DOME. (uses 1.5 top and 2nd rings, 4.0 oil)Colin
92 Sunbird GT, 3200 Hybrid 13.99@ 95.22 (2004)
90 Eagle Talon TSi AWD 10.54 @ 129mph.Comment
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Ok, so the gen 2 aluminum head pistons have the same cc as the head chamber?Ben
60DegreeV6.com
WOT-Tech.comComment
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might find some info here:
I modify stuffComment
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