Author Topic: 1975 Chevy Monza 2+2, Turbocharged 350 LT1, 5 spd, Ford 9" rear.  (Read 32385 times)

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Offline javajoe79

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Re: 1975 Chevy Monza 2+2, Turbocharged 350 LT1, 5 spd, Ford 9" rear.
« Reply #15 on: November 29, 2008, 06:28:02 PM »
I know a guy in Tennessee that has all of the Dekon Monza IMSA body molds. He has a full car with all the stuff on it too.
Coffey Fabrication and Race Prep
313 Wilhagan Rd Nashville, TN 37217
615-210-1605

https://www.facebook.com/CoffeyFabrication

Offline Boostedballs

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Re: 1975 Chevy Monza 2+2, Turbocharged 350 LT1, 5 spd, Ford 9" rear.
« Reply #16 on: November 30, 2008, 12:19:49 AM »
As long as you are soliciting opinions . Yes run an alternator.  No you do not need a fan.

Right on, but I was trying to avoid building an alternator mount.  :-D

Offline jimmy six

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Re: 1975 Chevy Monza 2+2, Turbocharged 350 LT1, 5 spd, Ford 9" rear.
« Reply #17 on: November 30, 2008, 12:59:18 AM »
IMO The electrical load of your vehicle will dictate the use of an alternator. You didn't say what ignition you were going to run. Some like higher voltages. Electric options like  fuel pumps, water pumps, helmet fans,  data aquisitions, etc can draw down voltage pretty quickly and some ignitions don't like that. If you plug in a separate battery at the starting line it will help for starting..............Good Luck
First GMC 6 powered Fuel roadster over 200, with 2 red hats. Pit crew for Patrick Tone's Super Stock #49 Camaro

Offline Boostedballs

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Re: 1975 Chevy Monza 2+2, Turbocharged 350 LT1, 5 spd, Ford 9" rear.
« Reply #18 on: November 30, 2008, 02:12:14 AM »
I'll be running twin electric fuel pumps, large electric water pump for intercooler, Stock ignition and fuel injection system (LT1), water injection solenoid, and that's about it. I have a pretty small alternator I can throw in there.

Offline AdioSS

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Re: 1975 Chevy Monza 2+2, Turbocharged 350 LT1, 5 spd, Ford 9" rear.
« Reply #19 on: December 17, 2008, 07:12:05 PM »
I have the bug big time and I want to get this car on the salt in 2009!

turbocharged LT1 350 with Iron heads, Garrett T4 turbo .70cold/1.00 divided hot side, exhaust pipe exits right front fender, water-to-air intercooler, water injection, wet sump, Ford 9" rear with 2.50:1 gears, T5 from Z28, Stock 3-link rear suspension,

-On a budget of course...
This is my first post on the board and I have to start out asking why you chose a B-body engine?  Please tell me you have made some changes to the internals...

You can make about 600hp on the factory hypereutectic pistons before you start having problems. 

The iron heads flow a little better than the aluminum ones (around 225cfm) and they do lower the compression ratio down from 10.5 to 10.1.  You can find another 50cfm or more from ported aluminum heads. 

Offline Roadster943

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Re: 1975 Chevy Monza 2+2, Turbocharged 350 LT1, 5 spd, Ford 9" rear.
« Reply #20 on: December 23, 2008, 12:57:52 AM »
As long as you are soliciting opinions . Yes run an alternator.  No you do not need a fan.

  Ditto!
Land Speed Racing, The sheer joy of spending every dime you've got racing for nothing but glory. David Freiburger

Offline Boostedballs

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Re: 1975 Chevy Monza 2+2, Turbocharged 350 LT1, 5 spd, Ford 9" rear.
« Reply #21 on: December 29, 2008, 10:45:55 PM »
Why the B-body engine?
It was a straight trade for a TBI 350 that I had laying around. I figured the LT1 would be an engine that can still be upgraded relatively cheaply and the LT1 shares a lot of the external flanges as the regular small block that came from the factory for the Monza.
To sum it up, I guess I'm just cheap and lazy.  :-D

Offline AdioSS

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Re: 1975 Chevy Monza 2+2, Turbocharged 350 LT1, 5 spd, Ford 9" rear.
« Reply #22 on: December 30, 2008, 10:25:23 AM »
the B-LT1 is a HUGE upgrade from the TBI stuff.  I went from driving a 91 Caprice with a TBI 305 to a 96 Impala SS with the LT1.  The B-LT1 can definitely make some power ;)  With over 150k miles on the odometer my Impala ran a 12.97@102.6 without doing anything to the inside of the engine.  Stock throttle body, stock valve springs, stock rockers, stock cam, etc.  Race weight was easily over 4100 pounds.

Offline Boostedballs

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Re: 1975 Chevy Monza 2+2, Turbocharged 350 LT1, 5 spd, Ford 9" rear.
« Reply #23 on: January 02, 2009, 01:04:55 AM »
the B-LT1 is a HUGE upgrade from the TBI stuff.  I went from driving a 91 Caprice with a TBI 305 to a 96 Impala SS with the LT1.  The B-LT1 can definitely make some power ;)  With over 150k miles on the odometer my Impala ran a 12.97@102.6 without doing anything to the inside of the engine.  Stock throttle body, stock valve springs, stock rockers, stock cam, etc.  Race weight was easily over 4100 pounds.

That's wonderful news! I guess I'll get it going on the stock ecm with the compressor section of the turbo removed and run the car on the stock LT1 naturally aspirated until the chassis is all dialed in. This little Monza is only around 2600lbs before I put a cage in it.

Offline AdioSS

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Re: 1975 Chevy Monza 2+2, Turbocharged 350 LT1, 5 spd, Ford 9" rear.
« Reply #24 on: January 03, 2009, 10:46:49 AM »
I would definitely suggest a cam change since the B-LT1 cam is the same cam used in the 265cid version of the LT1.  191/196@.050 .418/.430" lift on a 111LSA

Offline Boostedballs

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Re: 1975 Chevy Monza 2+2, Turbocharged 350 LT1, 5 spd, Ford 9" rear.
« Reply #25 on: January 05, 2009, 05:56:27 PM »
I would definitely suggest a cam change since the B-LT1 cam is the same cam used in the 265cid version of the LT1.  191/196@.050 .418/.430" lift on a 111LSA

I think that cam should work great in a turbocharged application, with 1.6 rockers of course.
I'm gunna leave the engine alone for now because I know it is in great condition and I'll focus on the rule book for now. I still need a ton of stuff for the car before I can even think about dumping cash into the engine.


Offline Boostedballs

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Re: 1975 Chevy Monza 2+2, Turbocharged 350 LT1, 5 spd, Ford 9" rear.
« Reply #26 on: January 13, 2009, 05:14:06 PM »
I guess I'll be running Goodyear front runners on the front but I'm having a hard time finding some rear tires that are readily available. I want to be legal for 250mph and I want to be able to find replacements when the time comes. I'm looking at about 27" diameter.

Offline Peter Jack

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Re: 1975 Chevy Monza 2+2, Turbocharged 350 LT1, 5 spd, Ford 9" rear.
« Reply #27 on: January 13, 2009, 07:18:31 PM »
The landspeed tires are in the Goodyear catalogue right in the same section as the front runners. They look similar but the difference is that they're a more durable construction.

Pete

Offline Boostedballs

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Re: 1975 Chevy Monza 2+2, Turbocharged 350 LT1, 5 spd, Ford 9" rear.
« Reply #28 on: January 15, 2009, 02:41:19 PM »
ok, so they want $495 EACH for the LSR tires. Holy sh*tballs Batman.

I met a gentleman at SW 2008 and he told me the secret to making a small fortune with LSR. He said to start with a large one...

I guess he was right.

Offline Boostedballs

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Fuel cell capacity?
« Reply #29 on: January 16, 2009, 10:41:26 AM »
I'm planning on an 8 gallon fuel cell for this build. This should be plenty for a blown small block right?