Anybody else with a 377??? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

c10-377 · 11-24-2004, 12:47 AM

Well, Im new but just wondering is anybody else running a 377 in their c10. In case you dont know a 377 is a 400 block with a 350 crank. I dont have pics now but soon they will come.

krue · 11-24-2004, 02:38 AM

No, what's the advantage? Seems like you'd want to keep the ci.

BTW welcome to the board from South Mississippi. What part of the country are you from?

cableguy0 · 11-24-2004, 02:42 AM

377 is a high revving higher horsepower engine typically

RON WOODGEARD · 11-24-2004, 05:30 AM

Anytime you destroke, You're going to get faster, RPM's.

I ran a Blown 377 in a 60 Ford Falcon many years ago. It was a Terminator..

By the way,, Welcome aboard From Northern Nevada !!!

400ex · 11-24-2004, 09:07 AM

I read an article in a Chevy magazine (can't remember which one now) with a comparision of a 377 and a 383. I had read this before I put a 383 in my truck 2 years back. They did a dyno test with the same parts on each motor.

Like Ron said the 377 is a faster revving motor. If memory serves me correct, the 377 had more top horsepower, maybe 10 horse more. The 383 had more torque coming in sooner and peaked at maybe 15 ft. lb more than the 377.

But the end result were 2 motors that were very similar in power each with its slight advantages. But again its how you build a motor and how each reacts to differing parts.

Please correct me if I'm wrong..

James

c10-377 · 11-24-2004, 12:36 PM

Im from Western Kentucky. Yes, as in an earlier post it is a terminator. I love this motor. I am running around 475hp. My truck is set up to look like a sleeper. Nobody has been able to beat my truck. Racing camaros, mustang with a 351 stroker, novas, and antoher 69 truck with a built 400. The motor loves RPM's. The power really kicks in at 3500-7000. Note: 7000 is has high as i have got it but it was pulling as hard at 7000 as it was at 3500. Also I love 67-72 c10's they rock

68w/sbc406 · 11-24-2004, 12:40 PM

i know a little bit about motors, but not much, a 350 has a smaller bearing than a 400, so when putting a 350 crank into a 400, are the bearings thick to make up the difference???

c10-377 · 11-24-2004, 12:44 PM

you can buy thicker bearings but that equals more money. It is cheaper just buy buy bearing spacers which what i used. Spacers just sets in like a bearing and then put bearing on top of that then put crank in. Easy.

c10-377 · 11-24-2004, 12:46 PM

you can also put a 327 or a 283 crank in a 400. This is extreme high revving stuff. I know someone that used a 400 with a 327 crank for circle track. That thing would SCCCRREEEEEAAAMMMMM!!!!!!!!!!

hyperformance · 11-24-2004, 01:25 PM

i had a freind who destroked a 396. just when it sounded like it would come apart it really started pulling. it'd turn up good for a big block and sounded great.

11-24-2004, 12:47 AM	#1
c10-377 Registered User Join Date: Nov 2004 Location: Western Ky Posts: 56	Anybody else with a 377??? Well, Im new but just wondering is anybody else running a 377 in their c10. In case you dont know a 377 is a 400 block with a 350 crank. I dont have pics now but soon they will come.

11-24-2004, 02:38 AM	#2
krue Designated A-hole! Join Date: Mar 2003 Location: South Mississippi Posts: 36,448	No, what's the advantage? Seems like you'd want to keep the ci. BTW welcome to the board from South Mississippi. What part of the country are you from? __________________ "If it ain't broke, fix it 'til it is!" Being stupid ain't illegal. We're Still Debt Free Except for the House!!! www.daveramsey.com 70 GMC SWB Stepside project "Green Booger" soon to be 6.0l/4l80e 93 S-10 "Poppaw's Truck"

11-24-2004, 02:42 AM	#3
cableguy0 Senior Member Join Date: Apr 2000 Location: Delta,Pa Posts: 14,948	377 is a high revving higher horsepower engine typically __________________ Owner of North Point Car Care in Dundalk Md. We specialize in custom exhaust on both modern and classic vehicles. We are a full service auto shop from classics to modern vehicles. Feel free to contact me with questions. I will give a 10% discount to any board member.

11-24-2004, 05:30 AM	#4
RON WOODGEARD Resident Young Old Dude ! Join Date: Jul 2001 Location: Nevada Posts: 1,948	Anytime you destroke, You're going to get faster, RPM's. I ran a Blown 377 in a 60 Ford Falcon many years ago. It was a Terminator.. By the way,, Welcome aboard From Northern Nevada !!! Last edited by RON WOODGEARD; 11-24-2004 at 05:32 AM.

11-24-2004, 12:40 PM	#7
68w/sbc406 Got Light Emitting Diode? Join Date: Apr 2004 Location: Newberg, OR Posts: 2,485	i know a little bit about motors, but not much, a 350 has a smaller bearing than a 400, so when putting a 350 crank into a 400, are the bearings thick to make up the difference??? __________________ 1968 1/2 ton 2wd lwb 6 lug disc and bags up front. Next c notch and rear bags '02 Chevy Silverado LT ext cab short bed 2WD 5/7 drop on 22's(the family car) 1993 Cherokee work ride/weekend wheeler

11-24-2004, 09:07 AM	#5
400ex Registered User Join Date: Jan 2003 Location: Damon, Tx Posts: 56	I read an article in a Chevy magazine (can't remember which one now) with a comparision of a 377 and a 383. I had read this before I put a 383 in my truck 2 years back. They did a dyno test with the same parts on each motor. Like Ron said the 377 is a faster revving motor. If memory serves me correct, the 377 had more top horsepower, maybe 10 horse more. The 383 had more torque coming in sooner and peaked at maybe 15 ft. lb more than the 377. But the end result were 2 motors that were very similar in power each with its slight advantages. But again its how you build a motor and how each reacts to differing parts. Please correct me if I'm wrong.. James

11-24-2004, 12:36 PM	#6
c10-377 Registered User Join Date: Nov 2004 Location: Western Ky Posts: 56	Im from Western Kentucky. Yes, as in an earlier post it is a terminator. I love this motor. I am running around 475hp. My truck is set up to look like a sleeper. Nobody has been able to beat my truck. Racing camaros, mustang with a 351 stroker, novas, and antoher 69 truck with a built 400. The motor loves RPM's. The power really kicks in at 3500-7000. Note: 7000 is has high as i have got it but it was pulling as hard at 7000 as it was at 3500. Also I love 67-72 c10's they rock

11-24-2004, 12:44 PM	#8
c10-377 Registered User Join Date: Nov 2004 Location: Western Ky Posts: 56	you can buy thicker bearings but that equals more money. It is cheaper just buy buy bearing spacers which what i used. Spacers just sets in like a bearing and then put bearing on top of that then put crank in. Easy.

11-24-2004, 12:46 PM	#9
c10-377 Registered User Join Date: Nov 2004 Location: Western Ky Posts: 56	you can also put a 327 or a 283 crank in a 400. This is extreme high revving stuff. I know someone that used a 400 with a 327 crank for circle track. That thing would SCCCRREEEEEAAAMMMMM!!!!!!!!!!

11-24-2004, 01:25 PM	#10
hyperformance Registered User Join Date: Oct 2004 Location: Knoxville, TN Posts: 47	i had a freind who destroked a 396. just when it sounded like it would come apart it really started pulling. it'd turn up good for a big block and sounded great.



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