SMR#002

iTrader: (9)

Hi, Im looking to add an intake manifold to my 99 ss. Cant seem to find much comparing the holley mid rise manifolds to others like ls6 or FAST. Anyone on here use the holley one?
heres a link of the manifold im talking about https://www.holley.com/300-126.asp
any feedback would be appreciated.

SMR#002

iTrader: (9)

no one uses holleys?

NnOoSsSs

iTrader: (1)

Im not sure but i think one time i saw someone comparing that and a LS1 and said it made 15-20 more. It might have been a high rise i cant remember

DietCoke

iTrader: (18)

The mid-rise will kill your power if it's an n/a car, so don't bother.

LilJayV10

iTrader: (39)

There are several people on here using them. The problem with them is they don't clear the cowl on a stock F body and require some cutting to fit.

IIRC that intake likes a different cam profile compared to a plastic intake due to the different runner length.

00ssmg

iTrader: (4)

curious to see if anyone has real tested results on these as they are cheaper than the fast units.

SMR#002

iTrader: (9)

That's why i posted here cant find any testing except on a ls3 based car where the high rise made more than a Fast.

roninsonic

iTrader: (3)

With a high-rise, you're going to lose wipers... A mid-rise will require some cutting and you'll need subframe spacing to keep the wipers.

Honestly, just go with a FAST.

SMR#002

iTrader: (9)

That's why im leaning towards the FAST. The car has 11k miles on it, I don't want to cut it apart.

Rise of the Phoenix

iTrader: (27)

Isn't there a low rise Holley intake? I think the intake would be great, given you have a correct cam profile to match it.

AnotherWs6

iTrader: (17)

Well, kinda.....

http://www.holley.com/300-121.asp

Not gonna do it, noooot gonna do it.

Blackpanther99

iTrader: (8)

Id go with the FAST instead. I wouldnt run a Hi-Ram unless im trying to run high RPMs.

SMR#002

iTrader: (9)

I think the intake is promising given the number of options you can choose from, (runner length etc.) It even comes with the rails and everything you need to install. The price is what makes it so enticing. Its like half the price of the FAST, but I want to see some dyno results comparing the two, or at least a comparison to a ls6 intake or even a stock one.

john j oliver

iTrader: (4)

TTT Does anyone have pictures of the Holley Mid Rise in a gen 4 car? I would like to know to what extent, if any, were cowl modifications made. Also would like to see some true dyno pulls comparison between the mid rise and the fast. Thanks