My 1988 LFX F40 build. (Page 26/68)
RandomTask JAN 09, 09:43 AM

quote
Originally posted by Daryl M:

Msweldon & RandomTask, I really haven't worked out the coolant routing yet. As for the engine mounting and related issues, I blocked the engine/transmission in place and moved it around until I liked the position. With the power steering pump removed and a shorter belt in place, it all just seemed to fall into place. I'm not familiar with the Camaro LFX. I went with the Impala motor because it seemed there would be fewer issues using a transverse engine. Hope you guys continue to chime in. The feedback and suggestions are appreciated.
Daryl



Daryl,

Gladly help in any way I can. You've done a phenomenal job thus far. I'll be catching up to you soon; just placed my order for the clutch so I can start bolting things together.

So you're tracking, on the Camaro LFX, the power steering pump and alternator are switched as to what they are on the Impala. (Fun fact, in GM's infinite wisdom on the Camaro PS Pump, they put a bolt that disconnects the pump right behind the outer edge of the pulley; you have to take the pulley off to get the pump off the block). Since we don't need the PS pump, that leaves the Camaro LFX in a little of a predicament, I can't run straight from the AC to the water pump b/c the tensioner is in the way. My options are to either keep the alternator where it is and fabricate a PS delete pulley setup, or just buy an Impala alternator and install it (where the Camaro PS pump used to be).



The only thing I'd be worried about in the picture above is the amount of belt wrap I'd be putting on the alternator. The impala setup has an idler pully right next to it to increase the purchase. While we won't be driving the alternator anywhere near as hard as an impala (since we have way less electrical needs) it's still a concern. For piece of mind, I'm on the lookout for the bolt/washer setup for this idler pulley.

[This message has been edited by RandomTask (edited 01-09-2020).]

RandomTask JAN 09, 09:51 AM
Oh and to add, I pulled the intake off and it looks like if you go to a camaro setup, to flip the intake around, you just need to lightly trim (~3/16") some of the ribbing on the bottom throat of the intake to clear the high pressure fuel lines.

The motor I have has ~100k miles on it and the valves are coked and I'm going to have to clean them. Seems some of the Camaro guys are seeing coking at around 15k miles. Might behoove you to pull the intake off and take a peak while everything is way more serviceable (ie, out of the car).
RandomTask JAN 14, 10:55 PM
Daryl, do you have the electrical schematic by chance? Or could you point me in the right direction? Gonna start rewiring this beast
Daryl M JAN 15, 02:21 AM
I got wireing instructions form Sinister (Darth Fiero on this forum). He also reprogrammed my ECM. It isn't really a schematic, more like instructions about what wire of the Impala harness goes to where on the Fiero. Since his changes are his intelectual property, I am reluctant to share without his authorization. Ryan is great to work with and was able to answer questions as I went along. Worth the money to have his brain to pick. If I were you, I'd contact him.
sp1@gmtuners.com
Hope this helps.
Daryl
RandomTask JAN 15, 06:17 PM

quote
Originally posted by Daryl M:

I got wireing instructions form Sinister (Darth Fiero on this forum). He also reprogrammed my ECM. It isn't really a schematic, more like instructions about what wire of the Impala harness goes to where on the Fiero. Since his changes are his intelectual property, I am reluctant to share without his authorization. Ryan is great to work with and was able to answer questions as I went along. Worth the money to have his brain to pick. If I were you, I'd contact him.
sp1@gmtuners.com
Hope this helps.
Daryl



Totally understand. Yeah, I already reached out to him. .. just need to finish the paperwork and send it to him.

Thanks!
Daryl M JAN 17, 08:23 PM
Ryan does a thorough job of taking everything into consideration. You should be happy with what he provides.
RandomTask JAN 27, 08:33 PM
So people are tracking if they want to do this with a Camaro LFX - My suggestion is do the impala and source a Camaro intake; way easier. From my research, the horsepower is in the intake and tune.

Things -
Belt Routing - Impala is already set up for it. I discovered that I can't just install an Impala alternator as the oil filter setup is different from the Camaro vs the Impala. The Camaro's comes straight up off the block to a cartridge style filter. The Impala setup goes back (towards the rear of the block) and out the "left" side of the block to utilize a canister filter; pretty much where the stock oil filter is located. The Camaro oil filter setup will prevent you from installing impala alternator. I had to purchase the Impala oil filter housing Assy (GM PN: 12657485)

Cooling - The Impala again, is better setup for this. First, the t-stat housing on the Camaro aims the inlet to the right to go around the block towards the front of the engine. The impala housing (PN is 12681132) aims it to the left (towards the front of a Fiero). As far as the outlet, the Camaro setup aims it straight forward, more than likely into the fiero right side strut tower. The impala kicks it to the left (front of fiero). I just picked one up off ebay for $20 as I couldn't find the part in any online catalog (eg GMPartsDirect) but the PN cast into the unit is 12597590.

I still have to figure out I want to run this to the cooling of the car, notably since the inlet/outlet is reverse from the Fiero setup. I'll most likely get a custom radiator to address this. I'll burn this bridge when I get there.


Intake - You can the Camaro intake 180* You do need to break out a dremel and trim some of the ribbing underneath the "throat" of the intake to clear the high pressure pump plumbing that's on the back side of the engine. I actually think once you do this it will put you in better shape for intake plumbing.

[This message has been edited by RandomTask (edited 01-28-2020).]

Daryl M FEB 01, 02:14 AM
RandomTask, just how much of the hp increase do you think is because of a better intake? Does your research indicate that any of the increase is because of better exhaust?
Daryl
Daryl M FEB 01, 02:15 AM
RandomTask, just how much of the hp increase do you think is because of a better intake? Does your research indicate that any of the increase is because of better exhaust?
Daryl
Joseph Upson FEB 03, 06:09 AM

quote
Originally posted by Daryl M:

RandomTask, just how much of the hp increase do you think is because of a better intake? Does your research indicate that any of the increase is because of better exhaust?
Daryl



This along with programming is what I thought made the difference. I followed a discussion and trial on an LLT vs. LFX intake on the Camaro forum where an LLT intake was mounted on an LFX, or the other way around and the end result I vaguely recall seemed to favor the LLT intake, but the overall outcome for the effort was that it wasn't worth the trouble.

I was also not impressed with the fact that a different intake manifold, larger intake valves, increased intake camshaft duration, moving the power peak 400 rpm higher to 6800 and adding .2 more compression points for the LFX, only netted 11 additional hp more than the LLT for the Camaro. That's an awful lot of upgrading for the return, of course that's only a snap shot as the entire performance curve would have to be compared for the over all difference.

There is a 7hp difference between the single and dual exhaust LLT for the Saturn outlook, so the exhaust definitely appears to have a notable effect with the typical fwd arrangement.

If you can believe wicked pedia; https://en.wikipedia.org/wi..._High_Feature_engine

[This message has been edited by Joseph Upson (edited 02-03-2020).]