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78 chevy truck 01-28-2004 09:56 AM

summit
 
i called summit about my problem and they told my to get this kit fem mhp 126 60 22 is this a good kit. he said he does not know if this will work with the deck hight. what do you guys think

what are the cc that are lost in 4 relef vavel on the pistons above do you think the are going to work?
old pistons h423np
new fem mhp 126 6022 do this pistons have a dome? are they the same hight as the other ones? the guy could not tell me

paperairplane 01-28-2004 10:08 AM

Sounds interesting, keep us posted.

78 chevy truck 01-28-2004 03:10 PM

any one

BoomerADF 01-28-2004 03:13 PM

Quote:

Originally posted by 78 chevy truck
any one
That part number returns nothing at Summit.

78 chevy truck 01-28-2004 03:43 PM

i dont know that what the teck guy said i think it is a fedrel kit

what is the standered gasket that comes with that kit

BoomerADF 01-28-2004 03:57 PM

Is this the kit by chance?

http://store.summitracing.com/partde...2DMHP126%2D022

78 chevy truck 01-28-2004 04:00 PM

ya what cmp ration will i have with 76cc heads? will these pistons work? and what is the dome -cc or +cc

BoomerADF 01-28-2004 04:06 PM

Quote:

Originally posted by 78 chevy truck
ya what cmp ration will i have with 76cc heads? will these pistons work? and what is the dome -cc or +cc
They are flat tops and accourding to the page

Quote:

* Compression ratio: 8.24:1 (76cc heads), 8.55:1 (72cc heads), 8.88:1 (68cc heads), 9.24:1 (64cc heads), 9.96:1 (58cc heads)

78 chevy truck 01-28-2004 04:39 PM

what if the block has been decked? what cc are they

NorthStar 01-28-2004 05:47 PM

Those pistons will have about -5 cc and 1.560 height.
Dont always believe everything they claim in ads especially compression ratios you have all the dimensions of your engine combination plug those into the compression ratio formula.

Very Important: You said or claim that your block has been resurfaced you have to measure how far down in the hole your existing pistons are at TDC. This easy to do no fancy gauges are needed. Find a flat piece of metal like a ruler or something and some feeler gauges, rotate till piston is at top of stroke and start testing which feeler gauge will fit. Measure in line with pin that way piston rocking in bore will have very little effect on your measurement.
If you dont get this done its just a gamble if youll have a problem with piston protrusion.

78 chevy truck 01-28-2004 09:28 PM

so are thos pistons the same hight then


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