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05-28-2002, 08:13 PM
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#1 |
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I Love This Stuff!
Join Date: May 2002
Location: Winnipeg, Manitoba, Canada
Posts: 739
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454 and 502
What is the difference between a 502 and a 454(besides displacement)?
What parts? Thanks Guys JHickson6 
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05-28-2002, 09:11 PM
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14.1 @ 96MPH
Join Date: Jul 2001
Location: Mesa, AZ
Posts: 2,811
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I don't think there's much, if any differences between the two. I could be wrong, of course. But I think as far as intakes / accessories / heads / exhausts / etc, all big-blocks from 396 to 502 (excluding the tall deck ones, I think) are treated the same way...
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Project1970 - LS1 Swap Complete! 
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05-28-2002, 09:13 PM
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#3 |
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Registered User
Join Date: Mar 2002
Location: Efland, NC
Posts: 303
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difference between 454 and 502
If I am not mistaken the main difference is stroke, but the 502 may have a little overbore. The 502 was introduced as a gen iv big block about 14 year ago. The gen iv through vi blocks share just about every feature other than increased strength. Some parts wont interhcange, but most will.
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1971 Cheyenne Super Soon to be converted to '68 front clip. Efland, NC |
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05-28-2002, 09:17 PM
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#4 |
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Registered User
Join Date: Apr 2001
Location: DALLAS,TX
Posts: 21,933
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They require slightly different head gaskets & I think 502's valvetrane is not adjustable unless using aftermarket parts, of course the obvious is the bore, hydraulic roller cam vs. flat tappet, aluminum heads, revised timing gear cover & a couple of other things I can't think of.
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67SWB-B.B.RetroRod 64SWB-Recycle 89CCDually-Driver/Tow Truck 99CCSWB Driver All Fleetsides @rattlecankustoms in IG Building a small, high rpm engine with the perfect bore, stroke and rod ratio is very impressive. It's like a highly skilled Morrocan sword fighter with a Damascus Steel Scimitar..... Cubic inches is like Indiana Jones with a cheap pistol. |
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05-28-2002, 10:38 PM
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#5 |
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I Love This Stuff!
Join Date: May 2002
Location: Winnipeg, Manitoba, Canada
Posts: 739
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Thank You
Thank Guys for your replies!!!
JHickson6 
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05-28-2002, 11:23 PM
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#6 |
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Registered User
Join Date: Jul 2000
Location: horn lake,ms
Posts: 388
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the stroke on the 454 is 4.25 inches and the 502 is 4.5 inches with the bore size the same on both........i think
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1976 Crew Cab Dually (under construction) 1972 Suburban 1955 Pro Street Chevy 1985 S-10 Blazer (daily driver) V W Sandrail Located in Horn Lake, MS that's just 4 miles south of Memphis TN www.classictruckshop.com/clubs/earlyburbs/members/gallery2/223/display.htm Former engine builder for Racing Head Service Performance Engines in Memphis TN. over 1,600 plus engines built by little ole me!! GOD BLESS THE BRAVEST OF THE BRAVE...THE NEW YORK CITY FIRE FIGHTERS!! Last edited by gearhead dave; 05-28-2002 at 11:26 PM. |
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05-28-2002, 11:53 PM
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#7 |
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Registered User
Join Date: Apr 2001
Location: DALLAS,TX
Posts: 21,933
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Gearhead Dave...not exactly, I think you mixed 'em up. The bore on a 454 is 4.25" stock & the bore on a 502" is 4.47 & both have a 4.00" stroke crank. The other things I couldn't think of earlier were the 502's do not have a provision for a mechanical fuel pump & don't have the threads for a clutch linkage pivot ball for the clutch z-bar linkage(but someone does now make an adapter).
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67SWB-B.B.RetroRod 64SWB-Recycle 89CCDually-Driver/Tow Truck 99CCSWB Driver All Fleetsides @rattlecankustoms in IG Building a small, high rpm engine with the perfect bore, stroke and rod ratio is very impressive. It's like a highly skilled Morrocan sword fighter with a Damascus Steel Scimitar..... Cubic inches is like Indiana Jones with a cheap pistol. |
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