carburetor intake manifold test


grumpyvette

Thread 'carb spacers and related intake modification'

I got asked this question ,

"I was wondering what one of these new Super Sucker carb spacers would bring compared to a regular 4 hole spacer."
Ill say right off that I have not used one of those super sucker spacers, personally, but I have seen several used, on cars and I have used very similar carb spacers many times,and worked on cars with them installed.
PB260008.jpg

spacerg1.jpg
carburetor spacers are used to either increase plenum volume or increase the distance from the...
no dyno info just some SBC intake comparison info on the difference in port/runner size etc. in the video above


btw the big block chevy rec port intake below

PFS-53031

www.summitracing.com

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Professional Products 53031 Professional Products Hurricane Intake Manifolds | Summit Racing

Free Shipping - Professional Products Hurricane Intake Manifolds with qualifying orders of $109. Shop Intake Manifolds, Carbureted at Summit Racing.
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these hurricane BBC rec port intakes need minimal porting ,
port matching on both the cylinder head ports and carb gasket before use,
and a 2" open spacer tends to help peak power,
but have proven to produce decent power.

pfs-53031_xl.jpg
 
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https://www.holley.com/products/eng...ake_manifolds/cast/single_plane/parts/300-561
oval port version

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Holley 9901-202 Holley EFI Intake Manifolds | Summit Racing

Free Shipping - Holley EFI Intake Manifolds with qualifying orders of $109. Shop Intake Manifolds, Fuel Injected at Summit Racing.
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rectangle port version

calculate fuel injector size

https://www.corvettemods.com/C4-C5-Corvette-1985-2004-Fuel-Injectors---Set-of-8---96lbhr---1000cc_p_17958.html?gclid=EAIaIQobChMIq8HDsqO69gIVoQaKAx1uHwGmEAEYASABEgKWQPD_BwE be sure you calculate the correct size injector and be sure you order the correct size injectors you need be sure to...
garage.grumpysperformance.com
both these intakes if you select a 1000 cfm throttle body and the correct size injectors easily support well over 800 plus hp

Holley EFI 112-587 Universal 4BBL 1000CFM Throttle Body

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of course you have options , like use of an efi tunnel ram ,if you really want to kick ass in the hp wars

www.speedwaymotors.com

Edelbrock 70855 Victor Tunnel Ram Intake Manifold Base, B/B Chevy

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Edelbrock 70855: Victor Tunnel Ram Intake Manifold Base Big Block Chevy EFI - JEGS

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Edelbrock 7086: Victor Tunnel Ram Intake Manifold Top Plate 4500 Series Carb Flanges - JEGS

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Holley 112-578: Throttle Body 2000 CFM - JEGS

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Flow Calculator

Fuel Injector Clinic's Flow Rate calculator. This calculator helps figure out what size injector would match your horsepower goals.
fuelinjectorclinic.com fuelinjectorclinic.com

calculate fuel injector size

https://www.corvettemods.com/C4-C5-Corvette-1985-2004-Fuel-Injectors---Set-of-8---96lbhr---1000cc_p_17958.html?gclid=EAIaIQobChMIq8HDsqO69gIVoQaKAx1uHwGmEAEYASABEgKWQPD_BwE be sure you calculate the correct size injector and be sure you order the correct size injectors you need be sure to...
garage.grumpysperformance.com
 



watch the videos, there's a great many tips you can pick up from each of the videos
and yeah, on single plane intakes where there's no hood clearance issues the Edelbrock 2892 has a few advantages,

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especially if your not into doing your own minimal port mods and clean-up work
Ive also seen good results from this JEGS intake, if your on a strict budget

JEGS 513026: Intake Manifold for 1955-1995 Small Block Chevy 262-400, Hi-Rise Single Plane [Satin] - JEGS

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keep in mind the results would change
if any factor like the components,
used in the engine build,
like the compression ratio,
combustion chamber design,
valve sizes
cylinder heads
or cam lift, duration, LSA
or the header design,
or rocker ratio
carb spacer,
carb size,
fuel/air ratio,
was changed
 
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there's several tips in the video, that might help, and related info that might prove helpful, if you know them.
flushing old oil of unknown age or composition, before you run the engine or start tuning may help
personally Id have used or added a pint of marvel mystery oil and a half a can of seafoam during both of those engine oil crud,
flush & change cleaning sessions,
that they used to remove the crud build up on the older engine.
remember the seafoam and MMO, will break loose a bunch of sludge that you will have trapped in the oil filter.
and I would use some standard non synthetic oil on that second flush,
no sense spending big bucks on oil that will be flushed in an hour or so.
simply because you know its going to be drained and pitched after an hours run time along with the oil filter.
(and of course I'd suggest you put on a new oil filter at the start and end of the two engine oil/ solvent engine flush sessions)
oil filters are cheap and frequent oil and filter changes insure a more durable engine

check with AMAZON, your local Wal-Mart and auto parts stores for deals on oil filters and gallons of oil.
I generally buy oil filters in groups of 4-6 minimum.

Worried About Oil Pressure ... Thats Too High? But Thinks It Low?

Hi all.I have a `65 Chevrolet Impala.I brought it with a 283 and turbo 350 trans in it and running well.I had the trans serviced and the shop found lots of plastic looking strips and stuff in the pan?? Put it back together and i got a quote to fix.Too costly. I got a performance 350 turbo trans...
garage.grumpysperformance.com

Oil Filters - Wix vs Royal Purple

Before I do anything, I like to let the filter drain for several days. It's just easier and not nearly as messy. I don't know how anyone else does the cutting open part, but I like to clamp the cutter in the vise. Then spin the filter with both hands...
garage.grumpysperformance.com

Oil & Filters

I have read through the threads: "yes the oil filter you sellect does make a differance" and " break-in oil quality tested" and "oil system mods that help". I live in Connecticut and Auto Zone and Advance Auto offer oil & filter deals. Currently Auto Zone has 5 quarts of Mobil 1 Synthetic or...
garage.grumpysperformance.com

got an older engine with sludge?

If youve got an older engine with a good deal of sludge from less than ideal maintenance..and if the engine RUNS ,Id pull the valve covers and inspect the condition of the engine, if its moderate, I,d drain the current oil, replace the oil filter, and throw two quarts of marvel mystery oil into...
garage.grumpysperformance.com

yes the oil filter you sellect does make a differance

READ THRU THESE SUB LINKS CAREFULLY theres a great deal of info here to look thru. pay attention to filter construction and the filter materials and total filter medium area, when discussing oil filters keep in mind their intended function, which is mostly too efficiently trap and remove...
garage.grumpysperformance.com
 
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there's a constant change in your available options, older intake designs, cylinder heads, carburetor's etc.
. get discontinued, (not always a good thing) while newer versions are brought into the market.
generally newer versions are brough out to correct flaws in the original version's,
but in many case's, it's been done to lower production costs, and the older intake is superior.
or the newer intake is produced to take advantage of newer info. (not always the case)
and yes, I've seen a few case's where older intake versions, even discontinued intakes made exceptional power.


not all tunnel ram and dual carb set ups perform well, and yeah, you need to know how to tune.
 
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