SBC Custom Engine Build
#1
434 SBC Custom Engine Build
I would like to ask for your help in putting together a "bill of materials" list to build a new engine for my boat this winter.
This will be a freash water only engine so I am fine using alum. heads if needed.
Here are the goals that I want to obtain.
Small Block Chevy
475 H.P. at the Crankshaft
Sustained WOT of 5,600 rpm, not to exceed 6,000 rpm.
Straight Plug Heads
Ability to run on 92 octane pump gas.
Good idle and broad torque curve.
I do not mind having to buy a World Products or Dart engine block to obtain cubic inches up to 434 cubic inches if necessary. I definately do not want to use a blower or turbo on this engine.
I will definately be using the following:
Aftermarket EFI system, closed cooling system that maintains around 175 degree F water temp and a Wet 4" Exhaust system.
Where I need some help is in selecting the crank, rods, pistons, heads and camshaft.
Thanks for your input on this fun winter project. My budget is around a maximum of $10K.
Thanks,
DonCig
This will be a freash water only engine so I am fine using alum. heads if needed.
Here are the goals that I want to obtain.
Small Block Chevy
475 H.P. at the Crankshaft
Sustained WOT of 5,600 rpm, not to exceed 6,000 rpm.
Straight Plug Heads
Ability to run on 92 octane pump gas.
Good idle and broad torque curve.
I do not mind having to buy a World Products or Dart engine block to obtain cubic inches up to 434 cubic inches if necessary. I definately do not want to use a blower or turbo on this engine.
I will definately be using the following:
Aftermarket EFI system, closed cooling system that maintains around 175 degree F water temp and a Wet 4" Exhaust system.
Where I need some help is in selecting the crank, rods, pistons, heads and camshaft.
Thanks for your input on this fun winter project. My budget is around a maximum of $10K.
Thanks,
DonCig
Last edited by Don Tamm; 10-23-2005 at 10:36 AM.
#2
I hate the winter!!
Platinum Member
Join Date: Jul 2001
Location: long island, new york
Posts: 2,707
Likes: 0
Received 0 Likes
on
0 Posts
Re: SBC Custom Engine Build
That will not be easy on that budget. Maybe this link will give you some help. He has some good deals on short block kits.
http://www.shafiroff.com/
http://www.shafiroff.com/
#3
Registered
Join Date: Oct 2000
Location: Spicewood, Texas USA
Posts: 1,382
Likes: 0
Received 3 Likes
on
2 Posts
Re: SBC Custom Engine Build
Don, I have an aftermarket EFI (4 bbl type intake) that I used on a customers boat prior to installing a Whipple. It has the intake, 1100cfm throttle body, fuel rails, adjustable regulator and 42 lb. injectors. It is drilled for traditional heads and Vortec. You would just need an aftermarket ECU/harness and fuel pump. It could save you quite a bit of money compared to new parts, and it is just like new. Let me know if you're interested.
Bob
Bob
#6
Registered
Join Date: Jan 2004
Location: San Diego, California
Posts: 2,777
Likes: 0
Received 6 Likes
on
6 Posts
Re: SBC Custom Engine Build
"There is no replacement for displacement" in a boat of your type. Invest your money in a big block, you will get more bang for your buck! and the marine parts will be cheaper.
Ray @ Raylar
Ray @ Raylar
#7
Re: SBC Custom Engine Build
Here is what I have placed on the "BOM" as of today.
Price on the following comes up to around $6,200
Dart Little M Block w/Nodular Splayed Caps for 434 c.i.
210 CNC Ported AFR Cyliner Heads Aluminum Straight Plug
Eagle 4340 Nitrided Crankshaft
Callies Compstar 4340 Steel Rods 6"
JE Forged 9.6-1 Pistons
I have set aside $2,500 for the Holley Stealth EFI which includes the intake manifold. The short block will come assembled to my specs so it apprars that the $10k budger was not to far off the mark.
Do you guys think that the Crane Cam #HR-284 will
produce 475 H.P with a decent idle if the engine is properly assembled?
Don
Price on the following comes up to around $6,200
Dart Little M Block w/Nodular Splayed Caps for 434 c.i.
210 CNC Ported AFR Cyliner Heads Aluminum Straight Plug
Eagle 4340 Nitrided Crankshaft
Callies Compstar 4340 Steel Rods 6"
JE Forged 9.6-1 Pistons
I have set aside $2,500 for the Holley Stealth EFI which includes the intake manifold. The short block will come assembled to my specs so it apprars that the $10k budger was not to far off the mark.
Do you guys think that the Crane Cam #HR-284 will
produce 475 H.P with a decent idle if the engine is properly assembled?
Don
#8
Registered
Re: SBC Custom Engine Build
Originally Posted by Don Tamm
Here is what I have placed on the "BOM" as of today.
Price on the following comes up to around $6,200
Dart Little M Block w/Nodular Splayed Caps for 434 c.i.
210 CNC Ported AFR Cyliner Heads Aluminum Straight Plug
Eagle 4340 Nitrided Crankshaft
Callies Compstar 4340 Steel Rods 6"
JE Forged 9.6-1 Pistons
I have set aside $2,500 for the Holley Stealth EFI which includes the intake manifold. The short block will come assembled to my specs so it apprars that the $10k budger was not to far off the mark.
Do you guys think that the Crane Cam #HR-284 will
produce 475 H.P with a decent idle if the engine is properly assembled?
Don
Price on the following comes up to around $6,200
Dart Little M Block w/Nodular Splayed Caps for 434 c.i.
210 CNC Ported AFR Cyliner Heads Aluminum Straight Plug
Eagle 4340 Nitrided Crankshaft
Callies Compstar 4340 Steel Rods 6"
JE Forged 9.6-1 Pistons
I have set aside $2,500 for the Holley Stealth EFI which includes the intake manifold. The short block will come assembled to my specs so it apprars that the $10k budger was not to far off the mark.
Do you guys think that the Crane Cam #HR-284 will
produce 475 H.P with a decent idle if the engine is properly assembled?
Don
#9
Re: SBC Custom Engine Build
Thats a hole lot of money going into a SBC just for 475 hp.It would make a very dependable bottom end
This is a little 355ci I built. Stock bottom end.Pump gas made 528hp.I have Been running it in my 70 Chevelle 4040lbs street/drag car for 3 years and also has a 200 shot of NOS.
I know a marine motor has a pretty good load all the time ,also has a lower RPM range.I also would like to have the good parts in the bottom end and on some of my other motors I have had in the car had the Crower billet crank/rods etc. IMO my 355 has been doing fine w/ stock crank/rods/block.
Good luck
Rob
This is a little 355ci I built. Stock bottom end.Pump gas made 528hp.I have Been running it in my 70 Chevelle 4040lbs street/drag car for 3 years and also has a 200 shot of NOS.
I know a marine motor has a pretty good load all the time ,also has a lower RPM range.I also would like to have the good parts in the bottom end and on some of my other motors I have had in the car had the Crower billet crank/rods etc. IMO my 355 has been doing fine w/ stock crank/rods/block.
Good luck
Rob
__________________
.
The Only Time You Have To Much Ammo Is When Your Swimming Or On Fire.
.
The Only Time You Have To Much Ammo Is When Your Swimming Or On Fire.
Last edited by Strip Poker 388; 10-26-2005 at 10:44 AM.
#10
Registered
Join Date: Oct 2000
Location: On the river
Posts: 3,372
Likes: 0
Received 0 Likes
on
0 Posts
Re: SBC Custom Engine Build
I built mine for half the money your planning on spending. Mine runs on 110 octane, has around 550-560 hp. all from a little 383....
Last edited by traviss; 10-26-2005 at 09:03 PM.