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post #31 of 44 (permalink) Old Mar 29th, 19, 12:51 PM
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Bob
 
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Re: 496 help

https://www.chevelles.com/forums/13-...ml#post2483639
The head gasket thickness and optimal quench seem tight. I added this link because this site has really good info. I know I run .040 since having my block decked the last time it was machined.
AFR305 can have the 117 or 121 cc chambers. so depending on what you do there you may end up under 10:1.
For you goal the afr265 or even Brodix 270s would get it done. the brodix would need a different cam though.

Lewis racing engines can save you a few bucks over the catalog places. he's member here and I have had him help me line up heads and rotating assembly for my builds.

where are you located?

Bob
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post #32 of 44 (permalink) Old Mar 29th, 19, 2:10 PM Thread Starter
 
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Quote:
Originally Posted by Supernova72 View Post
https://www.chevelles.com/forums/13-...ml#post2483639
The head gasket thickness and optimal quench seem tight. I added this link because this site has really good info. I know I run .040 since having my block decked the last time it was machined.
AFR305 can have the 117 or 121 cc chambers. so depending on what you do there you may end up under 10:1.
For you goal the afr265 or even Brodix 270s would get it done. the brodix would need a different cam though.

Lewis racing engines can save you a few bucks over the catalog places. he's member here and I have had him help me line up heads and rotating assembly for my builds.

where are you located?
South Carolina
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post #33 of 44 (permalink) Old Mar 29th, 19, 3:30 PM
 
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Re: 496 help

Rotating Kits.....read the fine print before you buy. Many cheap kits may have forged pistons but they use 5/64 5/64 3/16" rings so that it keeps the cost down. Thick rings are like rotatory phones, they work but that's about it. Belong on 400HP builds. Modern day pistons have 1.5 1.5 3.0MM that were developed in the 90's.

Chris Straub
Mfg Performance Parts

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Why is it we never have time or money to do it the right way in the beginning but we always have time and money to do it over again?
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post #34 of 44 (permalink) Old Mar 29th, 19, 7:18 PM
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Steve
 
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Re: 496 help

Quote:
Originally Posted by cstraub View Post
Rotating Kits.....read the fine print before you buy. Many cheap kits may have forged pistons but they use 5/64 5/64 3/16" rings so that it keeps the cost down. Thick rings are like rotatory phones, they work but that's about it. Belong on 400HP builds. Modern day pistons have 1.5 1.5 3.0MM that were developed in the 90's.

So how much you giving up?

64 Chevelle 496
64 F100 Street Rod with BBC /Chevy trapped in a ford body
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post #35 of 44 (permalink) Old Mar 29th, 19, 8:45 PM Thread Starter
 
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Quote:
Originally Posted by cstraub View Post
Rotating Kits.....read the fine print before you buy. Many cheap kits may have forged pistons but they use 5/64 5/64 3/16" rings so that it keeps the cost down. Thick rings are like rotatory phones, they work but that's about it. Belong on 400HP builds. Modern day pistons have 1.5 1.5 3.0MM that were developed in the 90's.
I ended up going with the eagle forged rotating assembly B11012060 part number
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post #36 of 44 (permalink) Old Mar 30th, 19, 10:41 AM
 
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Re: 496 help

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Originally Posted by StevenS View Post
So how much you giving up?
With ring technology today, good engine builders don't even consider this ring pack anymore. Hell the OEM's don't even use it. It's used because ring sets can be bought for $19 and that keeps the cost down.

Chris Straub
Mfg Performance Parts

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Why is it we never have time or money to do it the right way in the beginning but we always have time and money to do it over again?
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post #37 of 44 (permalink) Old Mar 30th, 19, 11:25 AM
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A neat ring comparison test, to bad they didn’t use a longer stroke for the test.

https://www.hotrod.com/articles/dyno...th-horsepower/
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post #38 of 44 (permalink) Old Mar 30th, 19, 11:33 AM
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Re: 496 help

based on that test i wouldnt throw away a set of 400.00 pistons to buy 500.00 pistons and 100.00 set of rings,,,,50hp diffrence i would think aboutit, if i were building from scratch, and new about the difference i would make diferent decisions
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post #39 of 44 (permalink) Old Mar 30th, 19, 11:58 AM
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Re: 496 help

My forged pistons are 5/64 and I am over 600HP so they will stay. Not changing for 7 hp. Every motor I ever had was thick rings so its more of a max effort IMO.

64 Chevelle 496
64 F100 Street Rod with BBC /Chevy trapped in a ford body
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post #40 of 44 (permalink) Old Mar 30th, 19, 12:00 PM
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Re: 496 help

Quote:
Originally Posted by 496regal View Post
I ended up going with the eagle forged rotating assembly B11012060 part number

I looked up your rotating assembly. Does not say what is has. Maybe give them a call.

64 Chevelle 496
64 F100 Street Rod with BBC /Chevy trapped in a ford body
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post #41 of 44 (permalink) Old Mar 31st, 19, 6:23 AM
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Re: 496 combo help

moving to Perf.

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post #42 of 44 (permalink) Old Mar 31st, 19, 11:48 AM
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Re: 496 help

Quote:
Originally Posted by 300stw View Post
based on that test i wouldnt throw away a set of 400.00 pistons to buy 500.00 pistons and 100.00 set of rings,,,,50hp diffrence i would think aboutit, if i were building from scratch, and new about the difference i would make diferent decisions
Quote:
Originally Posted by StevenS View Post
My forged pistons are 5/64 and I am over 600HP so they will stay. Not changing for 7 hp. Every motor I ever had was thick rings so its more of a max effort IMO.
Belive its in high rpm engines they make most difference, dont think its really matter on a street engine 6000rpm max.
7hp isnt much and dont worth pistons and rings twice as much imho, seen 5/64 ring pistons make over 700hp in BBC`s.
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post #43 of 44 (permalink) Old Mar 31st, 19, 11:58 AM
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Re: 496 help

Quote:
Originally Posted by cstraub View Post
With ring technology today, good engine builders don't even consider this ring pack anymore. Hell the OEM's don't even use it. It's used because ring sets can be bought for $19 and that keeps the cost down.

Sometimes you have to keep costs down to get where you want to be.
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64 Chevelle 496
64 F100 Street Rod with BBC /Chevy trapped in a ford body
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post #44 of 44 (permalink) Old Mar 31st, 19, 12:51 PM
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Rick
 
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Re: 496 help

Dual plane intake !!
At the power level you want everything that moves behind the block will need upgrading and that includes the suspension.
There is a lot of good information here. Listen and spend wisely.


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