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Old December 24th, 2017, 06:46 AM
  #41  
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Yes most likely in the low to mid 6K range, carb to pan.
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Old February 11th, 2018, 06:53 AM
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Update;
Short block is together with the new Mahle pistons. I went with the 4.100 after a boring from std. Compression is 9.4:1.
Cam is Erson TQ40 on a 108 (I wanted a little more "attitude").
Heads are 7a's with 2.00/1.62 valves, crossovers filled and dividers welded. Intake will be a regular Performer first, then an RPM. Carb is a QF 750 Slayer for both.
Should be going to the dyno the week of the 19th. I'll keep you all posted.
Last edited by cutlassefi; February 11th, 2018 at 07:22 AM.
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Old February 11th, 2018, 07:00 AM
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Pics didn't attach for some reason at first.
Attached Images
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Project 350.jpg (2.30 MB, 73 views)
File Type: jpg
Project 350 1.jpg (3.09 MB, 69 views)
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Old February 11th, 2018, 09:50 AM
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What oil pan are using? It will be nice to see my Performer on something that actually makes decent horsepower.
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Old February 11th, 2018, 09:56 AM
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Coming along nicely interested in seeing the performer and rpms results. Will you need to make carb adjustments for each manifold?
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Old February 11th, 2018, 10:54 AM
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Originally Posted by RetroRanger
Coming along nicely interested in seeing the performer and rpms results. Will you need to make carb adjustments for each manifold?
We'll see but I would think yes. After that it gets a Holley Sniper EFI.
Stock pan with a stock pump and the purple spring.
Main bearing clearance is about .0022-.0024, rods are .0025-.0027.
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Old February 11th, 2018, 06:39 PM
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I moved the high performance discussion to this thread so we don't hijack Marks.
https://classicoldsmobile.com/forums...rformance.html
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Old February 14th, 2018, 12:17 PM
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Cam change;
Going from the Erson TQ40 to a Lunati Hyd roller with similar specs, 218/226@.050, .502/.512 lift on a 112lsa.
You guys know I prefer rollers over flat tappets for just about everything. Decided to put this build further into the 21st century.
Thanks.
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Old February 14th, 2018, 02:40 PM
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Resonate TQ 40
Originally Posted by cutlassefi
Cam change;
Going from the Erson TQ40 to a Lunati Hyd roller with similar specs, 218/226@.050, .502/.512 lift on a 112lsa.
You guys know I prefer rollers over flat tappets for just about everything. Decided to put this build further into the 21st century.
Thanks.
Did you run the engine with that cam or not?
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Old February 14th, 2018, 03:12 PM
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Originally Posted by oldsmobiledave
Did you run the engine with that cam or not?
Nope, never got that far. Didn’t want to go thru the hassle of breaking in that cam then changing it along with the valve springs and pushrods. I’m all about trying to do things just once.
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Old February 14th, 2018, 04:32 PM
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Darn, I was wanting to see what hp the TQ40 put out. I am sure there is some power gained with the roller cam over the flat.
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Old February 14th, 2018, 05:18 PM
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Originally Posted by olds 307 and 403
Darn, I was wanting to see what hp the TQ40 put out. I am sure there is some power gained with the roller cam over the flat.
Yeah my guess would be 10-15.
Cams have about the same @.050, just a little difference in total off the seat time.
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Old February 14th, 2018, 08:07 PM
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But the 108 would have sounded so good .
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Old February 15th, 2018, 04:48 AM
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Originally Posted by Oldcoyote
But the 108 would have sounded so good .
Agreed. Nothing is carved in stone yet though. It’ll ultimately depend on who’s interested in this build upon or before completion. We’ll see.
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Old February 15th, 2018, 07:54 AM
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Originally Posted by cutlassefi
Agreed. Nothing is carved in stone yet though. It’ll ultimately depend on who’s interested in this build upon or before completion. We’ll see.
Completely understand, you can't just do this build and Dyno session out of generosity.
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Old February 16th, 2018, 01:17 PM
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Here's the link for this build in the "for sale" section. Thanks for all the feedback gentlemen.

https://classicoldsmobile.com/forums...ml#post1075559

I can do a mix of the options given if someone is interested early enough.
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Old April 20th, 2018, 08:10 AM
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Results
Mark

Did you complete this SBO yet?
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Old April 20th, 2018, 12:00 PM
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Originally Posted by oldsmobiledave
Mark

Did you complete this SBO yet?
Yes, it made 422/445 corrected hp and tq.
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Old April 20th, 2018, 06:33 PM
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Impressive! Which intake and where those numbers with the carb or FI?
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Old April 21st, 2018, 04:42 AM
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Originally Posted by BOP_Craig
Impressive! Which intake and where those numbers with the carb or FI?
Both, they were within a few hp of each other.
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Old April 21st, 2018, 05:28 AM
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Originally Posted by cutlassefi

Both, they were within a few hp of each other.
Post the Dyno sheets and what all was used when you have time. Very nice numbers.
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Old April 21st, 2018, 03:24 PM
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Originally Posted by cutlassefi
Both, they were within a few hp of each other.
And it was an RPM intake, sorry.
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Old April 21st, 2018, 03:35 PM
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Can’t wait to drop it in, sit behind it, and let it rip!!
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Old April 21st, 2018, 04:17 PM
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Originally Posted by olds 307 and 403
Post the Dyno sheets and what all was used when you have time. Very nice numbers.
Thanks
The new Mahle piston, 9.5:1.
Cleaned up 7a heads with 2.00/1.62 valves.
Erson TQ40’on a 108lsa.
Performer RPM intake and 750 Slayer carb
Chinese HEI
1.6 full roller rockers
Flowtech 1 3/4 headers blowing thru Magnaflow 2.5” mufflers

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