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  #61  
Old 05-24-2021, 07:56 PM
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Originally Posted by GTOGEORGE View Post
120-130 seems to be low for that compression.



GTO George
Thats what I thought to, I beleive it's got to do with the cam events.
Though it does seam low with that much compression huh.

GT

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  #62  
Old 06-02-2021, 05:44 PM
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Originally Posted by Mike S View Post
Want to know if it is possible to make 700hp on pump gas with a factory block.
I am thinking of changing the heads for next year. Going from 330cfm to 380 cfm and of course a cam change. Need peak hp to be around 6500rpm. Right now I am running 12-1 comp with 72 cc heads. Looking at 80cc to drop comp 1 point.
The short block is factory, filled to the water pump holes, billet 4 bolt mains, forged 4.21 crank, lifter bore brace, crower rods and 60 over ross pistons.

Goal is to run what I am running now but on pump gas. 10.00/133 at 3400lbs in the heat of summer.

... this is my 10.6 to 1 428 build, CV-1's and 93 octane, it made well over 700hp ...

... simple combo really ...
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  #63  
Old 06-02-2021, 06:05 PM
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Originally Posted by Anderson Port Development View Post
... this is my 10.6 to 1 428 build, CV-1's and 93 octane, it made well over 700hp ...

... simple combo really ...
Very nice! Can you share more?

bore and stroke?
RPM of peak power and torque?
valve sizes?
rocker ratios?

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  #64  
Old 06-02-2021, 07:00 PM
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Originally Posted by pastry_chef View Post
Very nice! Can you share more?

bore and stroke?
RPM of peak power and torque?
valve sizes?
rocker ratios?
4.155 bore
4.00 stroke
7300rpm HP peak
2.190/1.75
1.7/1.7 rockers

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  #65  
Old 06-02-2021, 07:04 PM
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more pics ...
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  #66  
Old 06-02-2021, 10:14 PM
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Originally Posted by Anderson Port Development View Post
4.155 bore
4.00 stroke
7300rpm HP peak
2.190/1.75
1.7/1.7 rockers
How has it ran at track? Just curious how the stock block is holding up.

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  #67  
Old 06-03-2021, 03:20 AM
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How has it ran at track? Just curious how the stock block is holding up.
X 2

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  #68  
Old 06-03-2021, 07:04 AM
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Originally Posted by Anderson Port Development View Post
4.155 bore
4.00 stroke
7300rpm HP peak
2.190/1.75
1.7/1.7 rockers
Hi Bill,
Is that a 290 cc intake port?

Thanks,
Stan

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  #69  
Old 06-04-2021, 04:45 PM
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How has it ran at track? Just curious how the stock block is holding up.
... my car is still getting the suspension work and cage work done at the chassis shop, the engine only has dyno time so far ...

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  #70  
Old 06-04-2021, 04:48 PM
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Hi Bill,
Is that a 290 cc intake port?

Thanks,
Stan
... yes, that top end was sold, it went 9.0's on a 535 single 4 set up in a 3300lb car, but broke the transmission, so hopefully the new trans will help some too ...

... my engine is getting an as cast CV-1.1 top end on it now ...

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