Can an LS1 be stroked to 377 ci?
11-11-2003, 10:04 PM
#23
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Originally Posted by Reckless
I'd go with a stock crank and get a resleeved block. Only cheaper option would be stock crank and iron 6.0 block with a bore. You could paint it with aluminum paint 
The whole idea is to recreate a modern version of the engines that lifted the front wheels off the ground through all four gears. Seriously, that's how light the real Grand Sports were!
They were crazy fast.It has to be an all aluminum V8 like the 377s specifically built for the Mecom racing team by GM. I'm really stoked about the possibilty of this.
11-12-2003, 12:58 PM
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Here's just a couple but most of the info is in that book in the link from the Grand Sport website you found.
http://www.grandsportcorvette.com/gs/gs002.htm
http://www.stingrayalley.com/facts.html
http://easyweb.easynet.co.uk/~jwilmot/corvette.html
http://www.jagair.com/gs/
What is a 377? Here's some conversation on it and why or how Chevy may have chosen it for the Grand Sports. Basically, it's a high powered, high revving engine - great for a lightweight racecar and easily built from stuff sitting on the parts shelf. http://www.hotrodders.com/t6386.html
http://www.grandsportcorvette.com/gs/gs002.htm
Powered by a 377 cubic inch small block fed by four 58mm Weber carburetors.
Grand Sports: 5 Vehicles built by Chevrolet, before General Motors withdrew from sanctioning body racing. They only built 5 out-of-the scheduled 100. All originally started out as Coupes, then # 1 & # 2 were made into Roadster's. Engine: Aluminum 377 Cubic Inches, and Light Weight.
Chevrolet wanted t acheive more on the racing scene. The Grand Sport was conceived to fill this role. It had a new tubular chassis and a 377 cubic inch V8 producing 550 bhp at 6400 rpm.
This "all-aluminum" 377 cubic inch small block was fed by four 58mm Weber carburetors through a special aluminum cross-ram manifold. The engine was said to produce 485 horsepower at 6000 rpm
11-12-2003, 02:18 PM
#27
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Cool... Just wanted to see the links.
377ci can be 400 block with 350 crank. I am not sure though if GM had 400 SBC blocks back then, they were in production cars in 1970 and beyond.
377ci can be 400 block with 350 crank. I am not sure though if GM had 400 SBC blocks back then, they were in production cars in 1970 and beyond.
11-12-2003, 03:31 PM
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I guess the answer would come from finding out where Chevy got the aluminum blocks. What were they making back then that was aluminum if not strictly for racing? I know some of the Buicks and Pontiacs were using some really small aluminum V8 engines back then - nowhere near 350 or 400ci though.
11-12-2003, 03:40 PM
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I would definatly go all bore for the good TQ and the extra power you can get out of the heads. I could see you getting 550 flywheel hp out of it easy.
Nate
Nate
11-12-2003, 04:15 PM
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{bench racer} the 377 SBC was nothing more than a 3.48" strooke crank in a 4.155" bore 400 block. easily accomplished w/ a custom crankshaft and a C5R block. a bigger bore block would be absolutly sick w/ that crank and a solid roller. can you say 8500 RPM all day long? {/bench racer}
or you could do a .080 over iron block, and a stock crank ~ala cheaper.
a bigger bore block would be absolutly sick w/ that crank and a solid roller. can you say 8500 RPM all day long? {/bench racer}or you could do a .080 over iron block, and a stock crank ~ala cheaper.
11-12-2003, 04:56 PM
#32
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kinda funny... when I first had my SCAT crank custom ground in march of 99 they screwed up and it was only going to come out to a 377. I had to wait another 4 months for my 4" 382 crank.
11-20-2003, 03:53 PM
#33
Originally Posted by VortechC5
I talked to Eagle at SEMA and they are coming out with LS1 cranks. They will be available with strokes of 3.622", 3.90" and 4.00" and are forged 4340. They are designed to use Eagle's 6.100" rods.
If you were to use the Eagle 3.90" stroker crank in an LS1/LS6 block that would give you about 373 cubic inches which is close to what you are looking for.
Eagle said that the cranks/rods (they can supply pistons too, JE I think) should be available any time now. According to the catalog they gave the cranks list for $1095.
If you were to use the Eagle 3.90" stroker crank in an LS1/LS6 block that would give you about 373 cubic inches which is close to what you are looking for.
Eagle said that the cranks/rods (they can supply pistons too, JE I think) should be available any time now. According to the catalog they gave the cranks list for $1095.
how would someone go about getting ahold of one of these (phone number, email, web site, etc....)?
11-20-2003, 04:21 PM
#34
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Eagle is www.eaglerod.com
My personaly opinion is you get a shop to build you a 4.08" sleeved block, then you get less shrouding, better chambers/flow on your heads, etc. you could probably get 480rw w/o too much trouble.
My personaly opinion is you get a shop to build you a 4.08" sleeved block, then you get less shrouding, better chambers/flow on your heads, etc. you could probably get 480rw w/o too much trouble.
