Specifications Comparison: 2021 GMC Sierra 3500 vs 2024 Ford F-350

Headroom

2021 GMC Sierra 3500

Headroom (Imp.)

Trim	Eng.	Drive train	1st Row Headroom (in)	2nd Row Headroom (in)
HD Crew Cab	6.6L V8	RWD	43	40
HD Crew Cab	6.6L V8	RWD	43	40
HD Crew Cab	6.6L V8	4WD	43	40
HD Crew Cab	6.6L V8	4WD	43	40
HD Crew Cab AT4	6.6L V8	4WD	43	40
HD Crew Cab AT4	6.6L V8	4WD	43	40
HD Crew Cab Denali	6.6L V8	4WD	43	40
HD Crew Cab Denali	6.6L V8	4WD	43	40
HD Crew Cab SLE	6.6L V8	RWD	43	40
HD Crew Cab SLE	6.6L V8	RWD	43	40
HD Crew Cab SLE	6.6L V8	4WD	43	40
HD Crew Cab SLE	6.6L V8	4WD	43	40
HD Crew Cab SLT	6.6L V8	RWD	43	40
HD Crew Cab SLT	6.6L V8	RWD	43	40
HD Crew Cab SLT	6.6L V8	4WD	43	40
HD Crew Cab SLT	6.6L V8	4WD	43	40
HD Extended Cab	6.6L V8	RWD	43	39
HD Extended Cab	6.6L V8	RWD	43	39
HD Extended Cab	6.6L V8	4WD	43	39
HD Extended Cab	6.6L V8	4WD	43	39
HD Extended Cab SLE	6.6L V8	RWD	43	39
HD Extended Cab SLE	6.6L V8	RWD	43	39
HD Extended Cab SLE	6.6L V8	4WD	43	39
HD Extended Cab SLE	6.6L V8	4WD	43	39
HD Regular Cab	6.6L V8	RWD	43
HD Regular Cab	6.6L V8	RWD	43
HD Regular Cab	6.6L V8	4WD	43
HD Regular Cab	6.6L V8	4WD	43
HD Regular Cab SLE	6.6L V8	RWD	43
HD Regular Cab SLE	6.6L V8	RWD	43
HD Regular Cab SLE	6.6L V8	4WD	43
HD Regular Cab SLE	6.6L V8	4WD	43

2024 Ford F-350

Headroom (Imp.)

Trim	Eng.	Drive train	1st Row Headroom (in)	2nd Row Headroom (in)
Super Duty DRW King Ranch Crew Cab 8' Box	7.3L V8	4WD	40.8	40.4
Super Duty DRW Lariat Crew Cab 8' Box	7.3L V8	4WD	40.8	40.4
Super Duty DRW Lariat SuperCab 8' Box	7.3L V8	4WD	40.8	40.3
Super Duty DRW Limited Crew Cab 8' Box	6.7L V8	4WD	40.8	40.4
Super Duty DRW Platinum Crew Cab 8' Box	7.3L V8	4WD	40.8	40.4
Super Duty DRW XL Crew Cab 8' Box	6.7L V8	RWD	40.8	40.4
Super Duty DRW XL Reg Cab 8' Box	6.8L V8	RWD	40.8
Super Duty DRW XL SuperCab 8' Box	6.7L V8	RWD	40.8	40.3
Super Duty DRW XL Crew Cab 8' Box	6.8L V8	4WD	40.8	40.4
Super Duty DRW XL Reg Cab 8' Box	6.8L V8	4WD	40.8
Super Duty DRW XL SuperCab 8' Box	6.8L V8	4WD	40.8	40.3
Super Duty DRW XLT Crew Cab 8' Box	7.3L V8	4WD	40.8	40.4
Super Duty DRW XLT Reg Cab 8' Box	7.3L V8	4WD	40.8
Super Duty DRW XLT SuperCab 8' Box	7.3L V8	4WD	40.8	40.3
Super Duty SRW King Ranch Crew Cab 6.75' Box	7.3L V8	4WD	40.8	40.4
Super Duty SRW King Ranch Crew Cab 8' Box	7.3L V8	4WD	40.8	40.4
Super Duty SRW Lariat Crew Cab 6.75' Box	7.3L V8	4WD	40.8	40.4
Super Duty SRW Lariat Crew Cab 8' Box	7.3L V8	4WD	40.8	40.4
Super Duty SRW Lariat SuperCab 6.75' Box	7.3L V8	4WD	40.8	40.3
Super Duty SRW Lariat SuperCab 8' Box	7.3L V8	4WD	40.8	40.3
Super Duty SRW Limited Crew Cab 6.75' Box	6.7L V8	4WD	40.8	40.4
Super Duty SRW Limited Crew Cab 8' Box	6.7L V8	4WD	40.8	40.4
Super Duty SRW Platinum Crew Cab 6.75' Box	7.3L V8	4WD	40.8	40.4
Super Duty SRW Platinum Crew Cab 8' Box	7.3L V8	4WD	40.8	40.4
Super Duty SRW XL Crew Cab 6.75' Box	6.8L V8	RWD	40.8	40.4
Super Duty SRW XL Crew Cab 8' Box	6.8L V8	RWD	40.8	40.4
Super Duty SRW XL Reg Cab 8' Box	6.8L V8	RWD	40.8
Super Duty SRW XL SuperCab 6.75' Box	6.8L V8	RWD	40.8	40.3
Super Duty SRW XL SuperCab 8' Box	6.8L V8	RWD	40.8	40.3
Super Duty SRW XL Crew Cab 6.75' Box	6.8L V8	4WD	40.8	40.4
Super Duty SRW XL Crew Cab 8' Box	6.8L V8	4WD	40.8	40.4
Super Duty SRW XL Reg Cab 8' Box	6.8L V8	4WD	40.8
Super Duty SRW XL SuperCab 6.75' Box	6.8L V8	4WD	40.8	40.3
Super Duty SRW XL SuperCab 8' Box	6.8L V8	4WD	40.8	40.3
Super Duty SRW XLT Crew Cab 6.75' Box	7.3L V8	4WD	40.8	40.4
Super Duty SRW XLT Crew Cab 8' Box	7.3L V8	4WD	40.8	40.4
Super Duty SRW XLT Reg Cab 8' Box	7.3L V8	4WD	40.8
Super Duty SRW XLT SuperCab 6.75' Box	7.3L V8	4WD	40.8	40.3
Super Duty SRW XLT SuperCab 8' Box	7.3L V8	4WD	40.8	40.3

2021 GMC Sierra 3500

Headroom (Metric)

Trim	Eng.	Drive train	1st Row Headroom (cm)	2nd Row Headroom (cm)
HD Crew Cab	6.6L V8	RWD	109	101
HD Crew Cab	6.6L V8	RWD	109	101
HD Crew Cab	6.6L V8	4WD	109	101
HD Crew Cab	6.6L V8	4WD	109	101
HD Crew Cab AT4	6.6L V8	4WD	109	101
HD Crew Cab AT4	6.6L V8	4WD	109	101
HD Crew Cab Denali	6.6L V8	4WD	109	101
HD Crew Cab Denali	6.6L V8	4WD	109	101
HD Crew Cab SLE	6.6L V8	RWD	109	101
HD Crew Cab SLE	6.6L V8	RWD	109	101
HD Crew Cab SLE	6.6L V8	4WD	109	101
HD Crew Cab SLE	6.6L V8	4WD	109	101
HD Crew Cab SLT	6.6L V8	RWD	109	101
HD Crew Cab SLT	6.6L V8	RWD	109	101
HD Crew Cab SLT	6.6L V8	4WD	109	101
HD Crew Cab SLT	6.6L V8	4WD	109	101
HD Extended Cab	6.6L V8	RWD	109	99
HD Extended Cab	6.6L V8	RWD	109	99
HD Extended Cab	6.6L V8	4WD	109	99
HD Extended Cab	6.6L V8	4WD	109	99
HD Extended Cab SLE	6.6L V8	RWD	109	99
HD Extended Cab SLE	6.6L V8	RWD	109	99
HD Extended Cab SLE	6.6L V8	4WD	109	99
HD Extended Cab SLE	6.6L V8	4WD	109	99
HD Regular Cab	6.6L V8	RWD	109
HD Regular Cab	6.6L V8	RWD	109
HD Regular Cab	6.6L V8	4WD	109
HD Regular Cab	6.6L V8	4WD	109
HD Regular Cab SLE	6.6L V8	RWD	109
HD Regular Cab SLE	6.6L V8	RWD	109
HD Regular Cab SLE	6.6L V8	4WD	109
HD Regular Cab SLE	6.6L V8	4WD	109

2021 GMC Sierra 3500

Headroom (Metric)

Trim	Eng.	Drive train	1st Row Headroom (cm)	2nd Row Headroom (cm)
Super Duty DRW King Ranch Crew Cab 8' Box	7.3L V8	4WD	104	103
Super Duty DRW Lariat Crew Cab 8' Box	7.3L V8	4WD	104	103
Super Duty DRW Lariat SuperCab 8' Box	7.3L V8	4WD	104	102
Super Duty DRW Limited Crew Cab 8' Box	6.7L V8	4WD	104	103
Super Duty DRW Platinum Crew Cab 8' Box	7.3L V8	4WD	104	103
Super Duty DRW XL Crew Cab 8' Box	6.7L V8	RWD	104	103
Super Duty DRW XL Reg Cab 8' Box	6.8L V8	RWD	104
Super Duty DRW XL SuperCab 8' Box	6.7L V8	RWD	104	102
Super Duty DRW XL Crew Cab 8' Box	6.8L V8	4WD	104	103
Super Duty DRW XL Reg Cab 8' Box	6.8L V8	4WD	104
Super Duty DRW XL SuperCab 8' Box	6.8L V8	4WD	104	102
Super Duty DRW XLT Crew Cab 8' Box	7.3L V8	4WD	104	103
Super Duty DRW XLT Reg Cab 8' Box	7.3L V8	4WD	104
Super Duty DRW XLT SuperCab 8' Box	7.3L V8	4WD	104	102
Super Duty SRW King Ranch Crew Cab 6.75' Box	7.3L V8	4WD	104	103
Super Duty SRW King Ranch Crew Cab 8' Box	7.3L V8	4WD	104	103
Super Duty SRW Lariat Crew Cab 6.75' Box	7.3L V8	4WD	104	103
Super Duty SRW Lariat Crew Cab 8' Box	7.3L V8	4WD	104	103
Super Duty SRW Lariat SuperCab 6.75' Box	7.3L V8	4WD	104	102
Super Duty SRW Lariat SuperCab 8' Box	7.3L V8	4WD	104	102
Super Duty SRW Limited Crew Cab 6.75' Box	6.7L V8	4WD	104	103
Super Duty SRW Limited Crew Cab 8' Box	6.7L V8	4WD	104	103
Super Duty SRW Platinum Crew Cab 6.75' Box	7.3L V8	4WD	104	103
Super Duty SRW Platinum Crew Cab 8' Box	7.3L V8	4WD	104	103
Super Duty SRW XL Crew Cab 6.75' Box	6.8L V8	RWD	104	103
Super Duty SRW XL Crew Cab 8' Box	6.8L V8	RWD	104	103
Super Duty SRW XL Reg Cab 8' Box	6.8L V8	RWD	104
Super Duty SRW XL SuperCab 6.75' Box	6.8L V8	RWD	104	102
Super Duty SRW XL SuperCab 8' Box	6.8L V8	RWD	104	102
Super Duty SRW XL Crew Cab 6.75' Box	6.8L V8	4WD	104	103
Super Duty SRW XL Crew Cab 8' Box	6.8L V8	4WD	104	103
Super Duty SRW XL Reg Cab 8' Box	6.8L V8	4WD	104
Super Duty SRW XL SuperCab 6.75' Box	6.8L V8	4WD	104	102
Super Duty SRW XL SuperCab 8' Box	6.8L V8	4WD	104	102
Super Duty SRW XLT Crew Cab 6.75' Box	7.3L V8	4WD	104	103
Super Duty SRW XLT Crew Cab 8' Box	7.3L V8	4WD	104	103
Super Duty SRW XLT Reg Cab 8' Box	7.3L V8	4WD	104
Super Duty SRW XLT SuperCab 6.75' Box	7.3L V8	4WD	104	102
Super Duty SRW XLT SuperCab 8' Box	7.3L V8	4WD	104	102