What TB/Plenum size?
06-11-2009, 12:55 PM
#12
3rd Gear Member
Join Date: Jan 2009
Location: Wellington, Florida
Posts: 602
Yup the only complaint I've ever heard was about the TB, a couple people had to take a file to the hole where the throttle cable slips in.
Just a little heads up about LateModelResto, call them and make sure they have it in stock BEFORE you place the order online. I've tried to order numerous parts through them only to find out a week later that they are on backorder.
Just a little heads up about LateModelResto, call them and make sure they have it in stock BEFORE you place the order online. I've tried to order numerous parts through them only to find out a week later that they are on backorder.
06-12-2009, 02:14 AM
#16
3rd Gear Member
Join Date: Mar 2005
Location: IL
Posts: 894
06-12-2009, 09:54 PM
#18
TECH SAVANT
Join Date: Dec 2006
Location: Saint Augustine, FL
Posts: 10,938
Read this...
In theory the 75mm TB is overkill and could reduce charge velocity, however empirically it probably doesn't matter.
FWIW I intentionally got a 70 mm TB--if I ever decide to go f/i I'll buy a 75 or the BBK 78 and sell the 70 for $60 on ebay for a whopping $30 "loss"...
In theory the 75mm TB is overkill and could reduce charge velocity, however empirically it probably doesn't matter.
FWIW I intentionally got a 70 mm TB--if I ever decide to go f/i I'll buy a 75 or the BBK 78 and sell the 70 for $60 on ebay for a whopping $30 "loss"...
06-13-2009, 11:42 AM
#20
6th Gear Member
Join Date: Feb 2006
Location: Virginia
Posts: 11,786
A stock long block w/ exhaust manifolds, o/r H, dronemaster, 75mm tb, and C&L plenum made 260rw in my car. With the addition of a V2, Innercooled and 10lbs at the manifold I made 440rw.
If it does decrease charge pressure and does hurt performance I would say that it's nominal. I'm sure anythings Better than stock but I don't believe there's much gained from the larger TB except just a few hp when the engine is still close to stock trim.
These engines need everything working together to produce good numbers. Any which way (but Loose) 70/75 or 78 it'll works itself out in the end, if you keep on modding your car.
If it does decrease charge pressure and does hurt performance I would say that it's nominal. I'm sure anythings Better than stock but I don't believe there's much gained from the larger TB except just a few hp when the engine is still close to stock trim.
These engines need everything working together to produce good numbers. Any which way (but Loose) 70/75 or 78 it'll works itself out in the end, if you keep on modding your car.
Last edited by Sxynerd; 06-13-2009 at 12:31 PM.
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