LS4 / F40 swap - fieroguru (Page 57/216)
Jims88 DEC 09, 10:53 PM
Thank You for the clarification!
Jims88 DEC 09, 10:55 PM
double post

[This message has been edited by Jims88 (edited 12-09-2012).]

kennn DEC 10, 11:45 AM

quote
Originally posted by fieroguru:

Thanks guys!


Discharge side (pre-thermostat, so it functions as the coolant bypass and so the heater sees hot water as soon as possible).

On the 88, the return from the heater core dumps into the passenger coolant tube before the fuel pump (suction side). The hardline I cut short is for the heater core supply and needs to come from a portion of the water pump before the thermostat. I am going to drill/tap and install a hose barb in the pump in the next few days.



Did you mean to say "water pump" instead of "fuel pump?"

Your work has inspired me; I'm employing your urethane bearing method for transmission and motor mounts and your 2.5L damper/pulley to shorten the front end dress.

Ken

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'88 Formula V6
'88 GT TPI V8

fieroguru DEC 10, 11:53 AM

quote
Originally posted by kennn:


Did you mean to say "water pump" instead of "fuel pump?"

Your work has inspired me; I'm employing your urethane bearing method for transmission and motor mounts and your 2.5L damper/pulley to shorten the front end dress.

Ken




Yes, it should be water pump... I will fix the typo.

Glad you have liked some of my solutions and putting them to use!
dskebo DEC 10, 05:21 PM
Speaking of fuel pump, How are you regulating fuel pressure? The LS4 engine does not have a regulator on the fuel rail . GM used one on the fuel pump module. Did I miss something?
fieroguru DEC 10, 05:31 PM

quote
Originally posted by dskebo:

Speaking of fuel pump, How are you regulating fuel pressure? The LS4 engine does not have a regulator on the fuel rail . GM used one on the fuel pump module. Did I miss something?




From the bottom of page 1:


quote
Originally posted by fieroguru:
One last bit of info... the LS4 came with a return-less fuel system and I plan to keep it return less. The easiest and probably a cheapest way to accomplish this is with a factory fuel filter/regulator built into 1 for the Corvettes. In my best Mad Max Thunder Dome chant "2 lines enter, 1 line leaves, 2 lines enter, 1 line leaves..." I picked mine up for just over $40 shipped:




[This message has been edited by fieroguru (edited 12-10-2012).]

dskebo DEC 10, 08:06 PM
Yep missed it. Da!
fieroguru DEC 15, 03:35 PM
I think the radiator upgrade is now complete. I ended up reshaping the top rubber seats as well (modified one in front, stock one in back):



The only modification to the sheet metal was to open up the hole around the fill neck:




I didn't need to do any modifying to the driver side, probably because I was able to slide the radiator over about 1/8" (with the larger fill cut out) to get everything to clear.

Then I worked on the battery mount. I fabbed up these brackets to hold the battery, but ended up unbending one of the bolted flanges.



The battery is now mounted under the passenger head light, but the only modification to the sheet metal in that area was to drill seven 1/4" holes and remove the protruding flange from the 1" diameter drain hole on the bottom side. In the first picture you can see that the battery easily clears the bottom of the 88 coupe fascia (notice the 2 bolt air ducting bracket on the other side of the battery).


The mounting bracket holds the battery firm in 3 directions and the batter hold down tab secures it in the 4th direction.

[This message has been edited by fieroguru (edited 12-15-2012).]

jaymelk2 DEC 15, 03:40 PM
Very nice job Guru....I love the attention to detail

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87 GT....SBC...fast as hell...
Proud new owner of....THE DIRTY RAT

F355spider DEC 15, 05:39 PM
I like that radiator I might have to get one of those also. Very nice work on the swap.