Fastburn 385 in 77
Thread Starter
Cruising
Joined: May 2007
Posts: 13
Likes: 0
Fastburn 385 in 77
I have a 77 L48 that I am going to be either rebuilding or putting a new one in. If I go through the expense of a new one I am thinking about the crate fastburn 385. The one thing I have been told to check is the hood clearance because the 385 has a 1-3/4" increase at the intake taller than stock.. Has anyone heard of this motor in a c3.
Thanks.
Thanks.
Safety Car
Joined: Nov 2004
Posts: 4,359
Likes: 57
From: Mundelein Illinois
I have a fast burn in my vette. I changed the intake to a Edlebrock Performer because i wanted to use the factory air cleaner with factory hood.
If you use an aftermarket air cleaner. The engine as is will fit under the stock hood.
If you use an aftermarket air cleaner. The engine as is will fit under the stock hood.
Safety Car
Joined: Nov 2004
Posts: 4,359
Likes: 57
From: Mundelein Illinois
I have a fast burn in my 81 vette. I changed the intake to a Edlebrock Performer because I wanted to use the factory air cleaner with factory hood.
If you use an aftermarket air cleaner. The engine as is will fit under the stock hood.
If you use an aftermarket air cleaner. The engine as is will fit under the stock hood.
Safety Car
Joined: Nov 2004
Posts: 4,359
Likes: 57
From: Mundelein Illinois
This winter I put a 5 speed in and changed the rear end gear back to the 3.55. The car is unreal. At 80MPH the motor is turning 2000 RPM's In first gear you can burn the tires off the rims. It's like a C5 or 6 in a C3 body.
For me just changing the engine to a fast burn in a 81. I would leave the original motor in it because of the gearing in the 4 speed and rear end. In a 77 depending on the gearing, that car has, it may make sense.
But from what I know now about 81's. If you change the motor I would also go with the 5 speed. Over drive is nice, but the gearing in the 5 speed is much nicer than the factory 4 speed. You will appreciate the motor even more.
Hope this helps and not confused you even more
Thread Starter
Cruising
Joined: May 2007
Posts: 13
Likes: 0
Good Info- However I am going to leave it an automatic, hope that it turns out nice and be done with it,,, or are those famous last words,, likewise I enjoy driving the car on the highway.. Do you have the 385 with 385 HP?
Last edited by Leno; May 23, 2007 at 08:04 PM. Reason: add question
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Safety Car
Joined: Nov 2004
Posts: 4,359
Likes: 57
From: Mundelein Illinois
GM part # 12496769 and I added GM hot cam and 1.6 roller rockers. GM says its 425 at the crank but that is with no pullys and perfect conditions. I would say the motor is more like 380 at the crank. I am going to the dyno this summer. You have to change the water pump to a short pump. The one on the motor is a long pump and reverse flow. Your current fan won't cool. If you go electric fans and surp you can use the pump on the motor.
The angled plugs don't interfere with the headers.
If you have any other questions, just ask
The angled plugs don't interfere with the headers.
If you have any other questions, just ask
