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any1 use piston Part Number: UEM-KB278030 #203675 01/25/09 09:32 AM 01/25/09 09:32 AM
Joined: Jul 2005 Posts: 8,647 ELYRIA,OH B blownzoom440 OP
blownzoom440 OP B Joined: Jul 2005 Posts: 8,647 ELYRIA,OH	in a 440 stock stroke.it is a quench dome with valve reliefs.it has a 2.050 CH,.200 dome.trying to pick a piston for Milan in the Q&A section for a max TQ motor on pump Gas. Part Number: UEM-KB278030-8 Bore (in): 4.350 in. Bore (mm): 110.490mm Piston Style: Step head, with a trough Piston Material: Hypereutectic aluminum Compression Distance (in): 1.992 in. Dome Height (in): 0.200 in. Piston Head Volume (cc): -5.00cc Wrist Pin Style: Press-fit or floating Pin Diameter (in): 1.094 in. Piston Ring Thickness: 5/64 in. x 5/64 in. x 3/16 in. Quantity: Sold as a set of 8. Notes: 0.200 inch quench dome height. Piston gram weight 775g, pin gram weight 190g. Pistons, Hypereutectic, Step, 4.350 in. Bore, 5/64 in., 5/64 in., 3/16 in. Ring, Big Block Mopar, Set of 8 link to info at KB http://kb-silvolite.com/performance.php?action=details&P_id=27 Last edited by METAL STORM; 01/25/09 10:35 AM.

Re: any1 use piston Part Number: UEM-KB278030 [Re: blownzoom440] #203676 01/25/09 03:34 PM 01/25/09 03:34 PM
Joined: Jan 2003 Posts: 344 Burlington, Ontario Canada Dave_S enthusiast
Dave_S enthusiast Joined: Jan 2003 Posts: 344 Burlington, Ontario Canada	I use that piston, but 4.360". It's holding up well. That being said I think I'm on borrowed time and worry about it when I go through the traps at 7000! Dave Dave Stillie '73 Swinger 5.7 Hemi, 88mm turbo, powerglide, cal-tracs & 8 3/4 Mega-Squirt EFI [email]8.93@149 [/email]

Re: any1 use piston Part Number: UEM-KB278030 [Re: Dave_S] #203677 01/25/09 03:49 PM 01/25/09 03:49 PM
Joined: Jun 2008 Posts: 3,916 usa L lewtot184 master
lewtot184 master L Joined: Jun 2008 Posts: 3,916 usa	if your going to use that piston with iron heads the dome will have to be machined. the kb184 will yeild the same compression without piston machining.

Re: any1 use piston Part Number: UEM-KB278030 [Re: lewtot184] #203678 01/25/09 04:12 PM 01/25/09 04:12 PM
Joined: Jul 2005 Posts: 8,647 ELYRIA,OH B blownzoom440 OP
blownzoom440 OP B Joined: Jul 2005 Posts: 8,647 ELYRIA,OH	i will have yo look at that 1 .will give quench also? http://kb-silvolite.com/performance.php?action=details&P_id=26 that piston only has .140 dome and .075 in the hole and the other is .090 and .200 dome and maybe more V/P clearence. Last edited by METAL STORM; 01/25/09 04:24 PM.

Re: any1 use piston Part Number: UEM-KB278030 [Re: Dave_S] #203679 01/25/09 04:37 PM 01/25/09 04:37 PM
Joined: Jul 2005 Posts: 8,647 ELYRIA,OH B blownzoom440 OP
blownzoom440 OP B Joined: Jul 2005 Posts: 8,647 ELYRIA,OH	Quote: I use that piston, but 4.360". It's holding up well. That being said I think I'm on borrowed time and worry about it when I go through the traps at 7000! Dave how much cam did you have and P/V clearence?

Re: any1 use piston Part Number: UEM-KB278030 [Re: blownzoom440] #203680 01/25/09 05:05 PM 01/25/09 05:05 PM
Joined: Jun 2008 Posts: 3,916 usa L lewtot184 master
lewtot184 master L Joined: Jun 2008 Posts: 3,916 usa	Quote: i will have yo look at that 1 .will give quench also? http://kb-silvolite.com/performance.php?action=details&P_id=26 that piston only has .140 dome and .075 in the hole and the other is .090 and .200 dome and maybe more V/P clearence. the kb catalog states that the 278 will need the domes machined. i use 184's in both my 440's.

Re: any1 use piston Part Number: UEM-KB278030 [Re: lewtot184] #203681 01/25/09 05:31 PM 01/25/09 05:31 PM
Joined: Jul 2005 Posts: 8,647 ELYRIA,OH B blownzoom440 OP
blownzoom440 OP B Joined: Jul 2005 Posts: 8,647 ELYRIA,OH	Quote: Quote: i will have yo look at that 1 .will give quench also? http://kb-silvolite.com/performance.php?action=details&P_id=26 that piston only has .140 dome and .075 in the hole and the other is .090 and .200 dome and maybe more V/P clearence. the kb catalog states that the 278 will need the domes machined. i use 184's in both my 440's. thanks for the info!what was the quench distance to the chamber? what head gasket?

Re: any1 use piston Part Number: UEM-KB278030 [Re: blownzoom440] #203682 01/25/09 09:48 PM 01/25/09 09:48 PM
Joined: Jun 2008 Posts: 3,916 usa L lewtot184 master
lewtot184 master L Joined: Jun 2008 Posts: 3,916 usa	Quote: Quote: Quote: i will have yo look at that 1 .will give quench also? http://kb-silvolite.com/performance.php?action=details&P_id=26 that piston only has .140 dome and .075 in the hole and the other is .090 and .200 dome and maybe more V/P clearence. the kb catalog states that the 278 will need the domes machined. i use 184's in both my 440's. thanks for the info!what was the quench distance to the chamber? what head gasket? sorry, i'm not sure if your asking about my 184 piston set-up or if kb gives a spec for 278's. all kb stated quench clearances are .040. thats the mean dimension i've used on both my 440s with iron heads. one engine has .017 steel shims and the other has fel-pro 8519's, .039 thick. the 278 and 184 piston are the same, pin heigth, valve reliefs, with the exception of the quench dome heigth. the 184 when installed at .040 quench clearance has loads of valve relief and about 9.3:1 compression. the 278 installed at .040 quench clearance without machineing the dome will have a compression ratio close to 8.75:1 and a little more piston to valve relief.

Re: any1 use piston Part Number: UEM-KB278030 [Re: blownzoom440] #203683 01/25/09 10:20 PM 01/25/09 10:20 PM
Joined: Jan 2003 Posts: 344 Burlington, Ontario Canada Dave_S enthusiast
Dave_S enthusiast Joined: Jan 2003 Posts: 344 Burlington, Ontario Canada	the cam has .587 lift, duration is 268 @ .050 and I have in excess of .125" PV clearance. Last edited by Dave_S; 01/25/09 10:22 PM. Dave Stillie '73 Swinger 5.7 Hemi, 88mm turbo, powerglide, cal-tracs & 8 3/4 Mega-Squirt EFI [email]8.93@149 [/email]

Re: any1 use piston Part Number: UEM-KB278030 [Re: Dave_S] #203684 01/26/09 05:18 AM 01/26/09 05:18 AM
Joined: Jul 2005 Posts: 8,647 ELYRIA,OH B blownzoom440 OP
blownzoom440 OP B Joined: Jul 2005 Posts: 8,647 ELYRIA,OH	thanks guys !that very helpfull information.

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