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#64946 05/26/11 12:20 AM
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Nearing the point of no return ! Found a local machinist with lots experience on stovebolts . Would like bounce my ideas off the board for your opinions. Here's my plan...'59 235 block and 848 head to be hot tanked and checked over . Want to bore 30 over and install Ross "Mcgurk dog turd " pistons on 270 GMC rods (full floaters and raise the pin 0.19 ). Shave the heads ,clean up the valve chamber, have the whole she-bang balanced and the crank drilled for a fluid balancer. Is there anything else I should be having done ? Am I missing anything ? Any thoughts on what kind of horsepower I'll be looking at ? All thoughts and opinions will be much appreciated ! Thanks in advance .. Mark aka Roadrash

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Forgot to mention plans call for a Clifford 4 barrel intake with a 390cfm Holley 4150 with a Patrick's E-2 cam

Last edited by roadrash; 05/26/11 12:45 AM.
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Convert to full flow oil filter. How to in out Tech Tips section.


"I wonder if God created man because he was disappointed in the monkey?" Mark Twain
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Make sure you port the head, you wont gain much by adding a bigger cam and more compression if you dont. California Bill's book shows some upgrades to do in that area to get the most benefit out of the head.



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Thank you Beater... had'nt thought of converting to full flow, should have been at the top of the list ! Was going to port the head originally... the Clifford site wasn't recomending it for that intake.....re-read the article ....that was for street use, porting back in the plan ! Thank you CNC .
Anymore input, 1st attempt at building a race motor, realistically how much horsepower can I expect ? Also what be an upper limit on RPM ?
Thanks Mark

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Porting is important and helpful as well is increasing your intake valve size and high lift rockers. Give the cam a chance, don't flatten it by making it do all the work. Share the load in the valve train. Make sure you take good care of your rotating assembly as well. Blue line/Shot Peen your crank and wet mag it too. Balance everything.... and I mean EVERYTHING in your rotating assembly.


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