LT5 Assembly Project

[LGAFF]

The IH that came with were not siamesed....I will be Siamesing the IHs and Plenum. I am shooting for 500hp(crank), but with that the car will be 3150lbs so I can get by with alittle less if needed, the 2ndry port is fine....primary could use some, but I am not going to puruse it.

Ultimately, this engine(a spare from 90-702) will go into #966.....I will then rebuild #966/port heads, and reinstall it in the car.....shortblock from #702 will probably then go up for sale.

[Paul Workman]

Originally Posted by LGAFF

I am shooting for 500hp(crank), but with that the car will be 3150lbs so I can get by with alittle less if needed...

I'm starting to remove extra weight from mine too. I was able to remove over 35# in one area alone...took it off the friggin DRIVER!!

Anywayz...another 500+ hp FBI entry. How cool is that!!??

P.

[LGAFF]

Some Clarity on Lifters

Looks like the INAs are AM.....421 000 110

HT-2236 Lifter is 35MM Diameter 27MM Height

INA 421 000 110 is 35MM Diamter and 36MM Height.

[Jagdpanzer]

Originally Posted by tpepmeie

Probably not, unless you do a valve job and sink the valves, or use shims (lash caps) on the tips.

Todd,
I'm planning on using the same light weight INA lifters as you have with stock exhaust and SGC Stage 1 intake cams.
Where is a good source for 35mm bucket lifter shims (lash caps) for 8mm valve stems?

[LGAFF]

http://www.nolimitmotorsport.com/sup...followers.html

[LGAFF]

Alittle note from Pelican Parts Forum on INA lifters, which I believe are the same as ours(Porche 928/944)
http://forums.pelicanparts.com/porsc...ml#post5570254

[LGAFF]

Post on Pelican Parts not to use the INAs, but to use the VW Lifters

Can you go to a solid lifter: http://www.034motorsport.com/engine-...ors-p-629.html

[LGAFF]

In terms of the Cam failures we have seen, maybe we need to touch base with these guys, they use the sames lifters/followers.....and they seem very confident in their regrinds:

http://www.928motorsports.com/parts/camshafts.php

[tpepmeie]

Lee,
Those are not the same p/n INA buckets that I have, but similar in appearance. There are several different ones looking about the same, but varying in weight and application.

The lightweight ones are VW/Audi part 050 109 309HBR. The suffix is important. The INA manufacturer p/n is printed on the underside.

We tested them to over 8000 on the spintron and saw no adverse issues with the buckets.

[LGAFF]

Interesting Article on flat tappet Cams, explores reason for failures, I noticed that the HBR means the tappet was made in Brazil, wondering if you are going to coat them, I am considering having my lifters coated.