LS4 / F40 swap - fieroguru (Page 94/216)
fieroguru DEC 24, 07:45 PM

quote
Originally posted by Jims88:

That was cool to see you Fiero competing, looks like they were using a leaf blower to blow off all the tire rubber ?
So what took the Grand Champion title?



The leaf blower was used after the drift competition (that was invitation only).

The winner was Danny Popp with his C3 Vette shown here. He took 1st place in the Autocross and 3S:
fieroguru JAN 10, 07:40 PM
Someone asked me for the torque specs for the LS4, so here they are:



Over the holiday I spent $25 to have Pat G spec a non-DoD camshaft for my swap using the flow information for all my parts, manual transmission, 3.55 final drive, and my request to break 400 whp and have more low end torque. He spec'd a camshaft with EPS HiRev lobes, more lift, less duration, and 4 degrees less overlap. This new camshaft will probably lower the RPM of my peak HP, but won't know until I swap it in and dyno it (won't happen till mid summer). If its too low, I can retard the cam 2-4 degrees to raise it up some.

New Cam specs:
EPS HiRev lobes, 222/226, .604”/.604”, 113 LSA +3 advance

Valve events at .050"
Intake Valve opens 1 BTDC (- indicates ATDC)
Intake Valve closes 41 ABDC
Exhaust Valve Opens 49 BBDC
Exhaust Valve Closes -3 ATDC (- indicates BTDC)
Exhaust Centerline 116
Overlap -2 degrees

For comparison, here is the current DoD camshaft
224/232 .564”/.575” 113 LSA

Valve events at .050"
Intake Valve opens -3.5 BTDC (- indicates ATDC)
Intake Valve closes 47.5 ABDC
Exhaust Valve Opens 46 BBDC
Exhaust Valve Closes 5.5 ATDC (- indicates BTDC)
Overlap 2 degrees
Kemp3 JAN 10, 11:04 PM
I am real happy with what Pat spec'ed for me , Geoff @ EPS is also a great guy who has a nice lobe design . If you go that route I am sure you will be happy.
KissMySSFiero JAN 22, 08:41 AM
Is the new cam going to work with the DOD or are you ditching DoD altogether?

What's next after Trinton's car is done?

------------------
SSFiero@Aol.com

fieroguru JAN 22, 09:22 AM

quote
Originally posted by KissMySSFiero:

Is the new cam going to work with the DOD or are you ditching DoD altogether?

What's next after Trinton's car is done?




I am ditching DoD for a camshaft with more power and better drivabilty.

The two biggest items will be a group buy for the LS4/F40 flywheels and starter bracket, finish up the 13" brake kit for the 84-87, and then start working on a top secret project.

ericjon262 JAN 22, 12:57 PM

quote
Originally posted by fieroguru:


I am ditching DoD for a camshaft with more power and better drivabilty.

The two biggest items will be a group buy for the LS4/F40 flywheels and starter bracket, finish up the 13" brake kit for the 84-87, and then start working on a top secret project.




I always get intrigued when you say something like this...
fieroguru FEB 21, 08:40 PM
It has been warm and rained several days this week, so the roads were free of salt finally. So I took the LS4/F40 car out for a parts run drive... I love driving this thing!

The mini battery has held up pretty good. The car has sat outside all winter and never failed to start it when needed.
dobey FEB 22, 10:31 AM

quote
Originally posted by fieroguru:
The two biggest items will be a group buy for the LS4/F40 flywheels



When can I get one?
fieroaddicted MAR 03, 07:31 PM
Sick build man! Excellent work!
fieroguru MAR 04, 07:57 PM

quote
Originally posted by dobey:
When can I get one?



It will be 1-3 months after I finish the F23/SBC swap. The longer time frame is if I go after SFI certification for them.



quote
Originally posted by fieroaddicted:

Sick build man! Excellent work!



Thanks!