Anyone running a 377cu in engine ?
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Joined: Oct 2002
Posts: 82
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From: Wanganui NZ
Anyone running a 377cu in engine ?
I recently replaced my 1977 L48 with in new engine
400 chev bored 30 thou over
2 bolt mains
350 steel crank lightened and drilled
trw pistons flat top
h beam rods
arp rod bolts
edelbrock alloy heads, angle plugs
manley valves
erson roller rockers
speedpro roller cam
480 thou lift 108 deg lobe centres 230 306 duration
rev kit
studded top and bottom
edelbrock scorpion inlet manifold
Holley 650 double pumper
Tilton starter
8 litre sump,painted inside
fluid damper
peaks 448 hp @5500 rpm 455 Lbs torque @4500
Fully rebuilt TH 350 trans
Built for a speedway sprintcar
Seems to be a bit more reponsive than the old L48 lol although not quite as economical.Dying to try it out over the 1/4 mile,any rough guesses as to what sort of time it should do ??? :chevy has original 3.08 diff ratio
[Modified by New-Zealander, 5:26 AM 10/29/2002]
[Modified by New-Zealander, 5:32 AM 10/29/2002]
400 chev bored 30 thou over
2 bolt mains
350 steel crank lightened and drilled
trw pistons flat top
h beam rods
arp rod bolts
edelbrock alloy heads, angle plugs
manley valves
erson roller rockers
speedpro roller cam
480 thou lift 108 deg lobe centres 230 306 duration
rev kit
studded top and bottom
edelbrock scorpion inlet manifold
Holley 650 double pumper
Tilton starter
8 litre sump,painted inside
fluid damper
peaks 448 hp @5500 rpm 455 Lbs torque @4500
Fully rebuilt TH 350 trans
Built for a speedway sprintcar
Seems to be a bit more reponsive than the old L48 lol although not quite as economical.Dying to try it out over the 1/4 mile,any rough guesses as to what sort of time it should do ??? :chevy has original 3.08 diff ratio
[Modified by New-Zealander, 5:26 AM 10/29/2002]
[Modified by New-Zealander, 5:32 AM 10/29/2002]
Race Director
Joined: Mar 2001
Posts: 11,322
Likes: 1
From: Living in the Hartland
Re: Anyone running a 377cu in engine ? (New-Zealander)
Will be running the opposite 377, 350 block with 3.75 crank and standard bore. Expect to shift my rpm range down 500 or so and gain low end torque. Reving high has become fun but I would like some more umph off the line and when I punch it at low rpm's.
Drifting
Joined: Dec 1999
Posts: 1,462
Likes: 1
From: Reno nevada
Re: Anyone running a 377cu in engine ? (New-Zealander)
377's (4.155X3.48) were the rage of certian classes of road racing and circle track here on the West Coast 20-25 years ago. Durring their day of not all the choices of modern internal motor parts it was the only way to make 550-600 hp and have the motor last.
With the advances in racing motors, displacement limited class racing, or CFM carb type restricted racing the 377 ci just about vanished. The 400 SBC has some design flaws IMO.
You car with the mid 400 hp should be capable of low to mid 12 second 1/4's The gearing and tires might hurt some. It's a screamer and if it was put together right it should last for years.
With the advances in racing motors, displacement limited class racing, or CFM carb type restricted racing the 377 ci just about vanished. The 400 SBC has some design flaws IMO.
You car with the mid 400 hp should be capable of low to mid 12 second 1/4's The gearing and tires might hurt some. It's a screamer and if it was put together right it should last for years.
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Joined: Oct 2002
Posts: 82
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From: Wanganui NZ
Re: Anyone running a 377cu in engine ? (New-Zealander)
I remember going to Saugus speedway a few years back for a swap met,i guess thatwas one of those tracks ? thanks for your replies :cheers:
