spawne32

iTrader: (2)

Starting a new thread for this swap thread, just received the intake today. This manifold was tested in the hotrod magazine intake manifold shootout back in the end of july. http://www.hotrod.com/features/1507-...ifolds-tested/

It has a retail price of $220 dollars, full cast aluminum with a removable bottom. Includes gaskets, and all hardware with the exception of a throttle body and fuel rail. Comes in both LS1/LS6 and LS2 styles (for port and map sensor positions) and with 86mm and 96mm 3 bolt and 4 bolt openings. The one i have here is an LS1/LS6 96mm 4 bolt application. It weighs exactly 26 pounds, roughly 8 pounds more then a Fast LSXR 102. 8.5" long runners and a large plenum volume support high RPM power up to 7000rpm.

Ill be doing test fitment probably sometime this week to verify if it needs any modification to fit behind the power steering pump an reservoir assembly but judging by the measurements I have taken on the stock manifold, no modification should be required for this. The short runners should provide plenty of clearance on that end. The map sensor hole by the throttle body is closed on the LS1/LS6 versions but the opening is cast into the throttle neck, so it can be used, it just needs to be drilled and tapped. The runners are channeled on the top to allow for clearance of stock fuel rails, but i still have to test fit the LS4 rail and see if that will work, or if aftermarket rails will be required. Injector hat extenders may be required.

The gaskets included in the kit are a coated paper gasket, and are NOT the new design provided with the professional products typhoon manifolds which these are cast on the same design. The PP gaskets with the nitrile sealing ring around the ports can be found here..
Hotrod LS1 vs Speedmaster Test







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more pics to come...

rottonj

iTrader: (4)

Looks good. Very informative as always. Looking forward to the results. Be a pic *****!

spawne32

iTrader: (2)

Can see here some minor casting flash and on each of the end runners, what look like plugs almost, i would assume from the sand casting process. Easily corrected though with some light porting.







gaskets arent the best quality, but very heavy duty, and very thick. Ill be reinforcing these with a gasket shellac to make sure it has a good seal.

rottonj

iTrader: (4)

Port that thing! How do the gaskets match up?

spawne32

iTrader: (2)

on the intake manifold, perfectly, on the head, still have to test that, not pulling my intake off until probably the weekend.

blkchevyz

do you think the stock fuel rails will work?

spawne32

iTrader: (2)

With any of the injector extenders it should theoretically fit over one of the center channels between the runners without issue, I have to check it though. That would be fantastic though if it fit, thats what im hoping for as it cuts down on the need for an aftermarket rail kit. Ill still need the katech OPSU adapter, and ill be picking up a low profile gen 4 valley cover off ebay and modifying it to work with the adapter. Shouldnt require a low profile valley tray though, just what i could find cheapest however.

elephantrider

iTrader: (2)

sorry, but what car is that in .. ?

spawne32

iTrader: (2)

grand prix gxp, why?

superglide9375

Yea I have it in my cart on eBay and Amazon with the fuel rails I guess I'll go ahead and get it it looked like rectangular not cathedral ports is why I held up on it I have an ls1 one off a gto and I wonder if I'm gonna see enough gain to invest also ls6 man for 186 on Amazon but out of stock lol

spawne32

iTrader: (2)

It's worth it over the LS1, you can see from the hot rod mag tests that it gained over 20hp in the top end over the LS1 and a decent amount of torque throughout the RPM band. Not to mention porting this thing is a piece of cake. I've already begun smoothing out the port sides entry way, and ill need to order a few more porting bits and stop and harbor freight for some cartridge rolls.

superglide9375

Ok I'll do it I thought that the ports had to match but guess not lol shows how much I know

superglide9375

Shawne got ICT 55164 low profile valley tray and countersunk holes 42 dillars free shipping on ebay

superglide9375

For DOD delete that is

91parkave

iTrader: (4)

You really do not need a katech adapter if you have a decent tig welder around town . I wouldn't waste the time on porting this till you can confirm it fits.

elephantrider

iTrader: (2)

just curious with the engine placement. didn't know if it was
a impala ss or gp, other pontiac, or what. i think its awesome.

spawne32

iTrader: (2)

It's a bitch being front wheel drive lol from a dig any RWD or AWD car with any sort of decent amount of power can smoke me off the line, but from a roll, held about a car length and a half from my buddies mid 12 second GTO on a good night. This and a wideband are on my to do list for power mods.

spawne32

iTrader: (2)

Typically you always want the manifold port side to be either an exact match or smaller then the head port side to allow unobstructed flow into the head. I'm not gasket matching these ports im just smoothing the casting flash at the entry and exits.

superglide9375

yea i just ordered polished one from speedster for 260,already have an ls6 tb i got fom pimpala and got ballenger to make the connector so its a plug in for the ls4

91parkave

iTrader: (4)

https://ls1tech.com/forums/generation-iii-external-engine/1574702-honest-review-tyhoon-85mm-intake-manifold-2.html