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Re: Advice wanted- Building a 350 SBC for a G30
shaggy #793588 July 30th 2022 2:11 pm
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I'm in Ireland, anything I buy for it I have to import and heads are heavy and thus cost big money to import. For this motor it's not worth it for me.

My choice is between 624 heads and 882 heads, and the consensus is that 882s are not as bad as 624s.

Thanks guys.


79 chevy G30 cobra camper conversion.
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Re: Advice wanted- Building a 350 SBC for a G30
shaggy #793829 August 04th 2022 10:45 am
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Originally Posted by shaggy
I'm in Ireland, anything I buy for it I have to import and heads are heavy and thus cost big money to import. For this motor it's not worth it for me.

My choice is between 624 heads and 882 heads, and the consensus is that 882s are not as bad as 624s.

Thanks guys.

I saw you mention 462 heads in your first post. 624s and 882s are all in all roughly the same. Both are large chamber, poor flowing and crack prone lightweight castings. I would magnaflux either. Hopefully one of the other is useable.


1983 G20 Conversion Van, 350 TPI, Reed Hydraulic Roller cam, Ported 906 Vortec, Edelbrock 3817 TPI-Vortec Base, Doug Thorley Tri-Ys, Dual 2 1/2" exhaust, Speed Density 7730 ECM tuned by ME, 700r4 by ME, Stock 1,600 rpm converter, Rebuilt Stock 10 bolt with posi by ME, 3.08 gears, 358 RWHP @ 5,200, 384 RWTQ @ 3,400, 14.66 @ 95.43 w 2.28s 60'
Re: Advice wanted- Building a 350 SBC for a G30
shaggy #793856 August 05th 2022 8:42 am
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Yeah sorry my, mistake they are 624's the full code is 462624 hence the mix up.

Just found the 882 heads are cracked so have to re-assess my options.


79 chevy G30 cobra camper conversion.
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Re: Advice wanted- Building a 350 SBC for a G30
shaggy #793888 August 06th 2022 1:41 pm
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Compared to the cost of machine work and parts on a crack prone casting it might still be worth investigating what importing new heads would run. I have the same casting as these AFR Enforcers that have been ported on my 383. It runs phenominally well in my heavy Express van. Being aluminun they are much lighter than iron heads. The small 64cc chambers would up your compression as well to help your power and economy on propane.

https://www.speedwaymotors.com/AFR-1001-SBC-195-Enforcer-Heads-Straight-Plug-Assembled,478814.html?sku=1631001&utm_medium=CSEGoogle&utm_source=CSE&utm_campaign=CSEGOOGLE&gclid=Cj0KCQjworiXBhDJARIsAMuzAuwOEpJYeHBgGgPETAS4inPQh64yshyJXizW5IxWqJDODa0SInJihXIaAgdLEALw_wcB

Last edited by 1983G20Van; August 06th 2022 1:42 pm.

1983 G20 Conversion Van, 350 TPI, Reed Hydraulic Roller cam, Ported 906 Vortec, Edelbrock 3817 TPI-Vortec Base, Doug Thorley Tri-Ys, Dual 2 1/2" exhaust, Speed Density 7730 ECM tuned by ME, 700r4 by ME, Stock 1,600 rpm converter, Rebuilt Stock 10 bolt with posi by ME, 3.08 gears, 358 RWHP @ 5,200, 384 RWTQ @ 3,400, 14.66 @ 95.43 w 2.28s 60'
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