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You can use either one. It just depends if you're looking for better low end torque or power in the top end.
 

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Dont know about weiand,but i just talked to edelbrock tech. line last night.They said if i wanted to use a spacer on my performer intake that i should use the divided spacer.thats with a performer carb.I think the 2 manifolds are similar.jd
 

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A weiand and performer are nowhere NEAR the same.
 

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On 2006-03-14 19:20, 82GT wrote:
A weiand and performer are nowhere NEAR the same.
Both are dual plane intakes, that makes them fairly similar, one is just more geared towareds torque and hood clearance, the other towards horsepower.

The difference ins spacers is with the open spacer, you lose some of the pulsing effect that you get from having a dual plane vs. single plane, and thus will loose some torque below 3000ish rpm, but you will gain airflow since each cylinder will be able to pull from all four barrels of the carb instead of just the two, so you will gain top-end power. The four-hole spacer keeps the plenum divided and also straightens airflow out from the carb before it enters the intake, so you gain both some low-end torque and high-rpm horsepower, though not as much high-rpm gain as the open spacer.
 

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On 2006-03-14 19:29, Motorhead wrote:
On 2006-03-14 19:20, 82GT wrote:
A weiand and performer are nowhere NEAR the same.
Both are dual plane intakes, that makes them fairly similar, one is just more geared towareds torque and hood clearance, the other towards horsepower.
Yeah, they're both duel plane intakes and the similarities end there. After that, it like comparing apples to oranges.
It's like saying a stock head is similiar to an AFR head......both hold valves, springs, retainers, both have intake and exhaust runners.......
I gained 3mph, which is about 30hp, just by going from a performer to a stealth. That's a HUGE difference.
 
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