Thread: chevrolet small block

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Welcome and nice truck you have! I have a soft spot for 67-72s. If you need any info or a place to look at more pics of them check out 67-72chevytrucks.com . Anything you want to know about them will be on there. There are other RH drive built trucks on there as well.

thanx for the warm welcome will definitely go and check them out thanx

Ford color, Grabber Blue......
https://i.ytimg.com/vi/6SEXygWtsAQ/maxresdefault.jpg

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ok please ignore previous post because plans have changed lol we decided to do a twin turbo setup on the 327 motor with very low boost nothing major here is the parts list so far

327 block
283 power pak heads
1102 summit cam
ACL mains and big end bearings
melling high volume oil pump
efi high rise intake
8x 550cc injectors
crane hydraulic lifters
arp head bolts
victor reinz steel head gaskets
pistons : not sure which to use any ideas or advice would be appreciated

do you guys have any idea at compression ratio i am looking at with this setup
thanx in advance

any advice on this engine build guys ??

Why twin turbo with low boost?

I'm no expert on turbos, but it seems to me that of you want low boost, use one turbo.

Fewer headaches that way.

Twin turbos are easier to plumb on v8s than single turbo

I wouldn't turbo anything with a carb these days--too many fuel injection options available that cab be tuned for low rpm vacume to higher boost high rpm ----
No problems then with blow thru carb issues, power valves, pcv------

we are going efi with it using this intake... SBC Small Block Chevy High Rise Hurricane Aluminum EFI Intake Manifold 350 | eBay

and will be using 8x 550cc injectors,the reason for the low boost is because i am scared that the motor wont be reliable with high boost

I agree with your choice of a 360 degree intake manifold design, but be careful about getting the correct bolt pattern. Here is the bolt pattern of your heads......
https://www.autopartsdb.net/assets/i...mg/4/43220.JPG
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thanx for the tip will double check it to be sure

didnt know you get different bolt patters on the sbc intakes i thought they were all the same lol ok so my intake wont match the 283 power pack bolt pattern so i guess i need some different heads to work with this intake

Originally Posted by werner5

we are going efi with it using this intake... SBC Small Block Chevy High Rise Hurricane Aluminum EFI Intake Manifold 350 | eBay

and will be using 8x 550cc injectors,the reason for the low boost is because i am scared that the motor wont be reliable with high boost

That won't work with your heads but something like this will SBC Chevy 350 Dual Plane Aluminum Intake Square Bore Idle-5500 RPM Small Block | eBay

Originally Posted by firebird77clone

Why twin turbo with low boost?

I'm no expert on turbos, but it seems to me that of you want low boost, use one turbo.

Fewer headaches that way.

You don't need a lot of boost to make big power with turbos but this greatly depends on the turbos being used too. On a 5.3 we did with 2 on3 turbos, that thing made over 650hp on 6lbs of boost. China turbos and junkyard engine. I was impressed and ticked off.

Originally Posted by 40FordDeluxe

I was impressed and ticked off.

Ain't it the truth? It's just too damned easy.
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