I need a measurement..., from a V8 converted 914 Options

[bondo]

Can someone measure from the flat surface the intake manifold seals to (ya know, the one you have to put a bead of silicone on, lightly bolt up the manifold, let it set, then torque it down only to have it leak anyways) to the underside of the engine lid?

I need to make some intake manifold mods for my LT1. There was a rumor that the intake would just flip around, putting the trottle body at the rear and less in the way. I have just confirmed that it won't flip around. It's VERY close though. ports line up, holes line up, but those two horizontal sealing surfaces are different from front to back.

I now have two options:

1. Modify those sealing surfaces

2. Mount the throttle body elsewhere on the manifold

I'm leaning towards #1 because it looks easier. If I don't have room to mount the throttle body on the top of the manifold then that will force me to option #1.. which is why I need the measurement. (IMG:http://www.914world.com/bbs2/html/emoticons/smile.gif)

[ajracer]

Royce:

I believe we discussed this a little earlier since I am doing a similar, Chev LT1 from
a 1995 Camaro in my 914 project car. Here are some of my thoughts and comments:

- My plan currently is to make use of the GM motorsports manifold designed for a
carburetor and also allows me to located the "regular old style distributor" in
the rear for ignition system. (or Electronic distributor)

- Future plans will be to make use of the complete GM fuel injection system, manifold
and megasquirt or aftermarket programmable FI system. At that time I will also be
modifying my FI manifold to re-install my distributor/electronic spark controls.
Check out this link and look it over which should help you out
http://www.lt1intake.com/swapping.htm

- In addition to modiflying my manilfold as outlined above, I also did some research
on a donor car which indicated to me that I would likely need to "re-locate" the
throttle body by fabricating a special adaptor and thus that is my plan to take once
to move ahead with installation of the complete FI. Side mounted is my plan.

- In the short term I am more interested in getting the conversion done and upgrading
the car along with getting some driving time before I spend all the extra engineering
time to source, set-up and fine tune a FI system and the associated "extra" electronics

- In regards to the COOLING SYSTEM, how is that going with your plans of front
mounting the water pump ? Does everything look workable or any problems do you
foresee. See below photo of my "water adapters" for external water pump.

- Getting back to your manifold, for some reason when I was considering mine in
a reversed mode I thought there were other issues WHY it could not be also just
turned around and run that way. But the above mentioned comment regarding
welding and then just machine/mill flat would work fine, otherwise check with a
well known engine builder to confirm Why you could not just use RTV sealant in
excess around the areas of concern. When teh engine is fully assembled and the
intake gaskets are properly sealed, there should be little if any pressure at the
front and rear manifold sealing points other than some loose oil (not under pressure)
from the lifter gallery below. Just my thoughts but could be worth consideration.

Must go for now getting too long winded, but an interesting project. Best of luck
with your LT1 conversion, keep in touch.

Allan