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SB4 7.0
#1275316 Mon Aug 06 2018 04:37 PM
Joined: Mar 2008
Posts: 2,026
W
'Bolter
I was thumbing through a magazine the other day when I came across an ad for an SB4 engine. They claim 750-800 hp.
At a first glance, I thought it was a blue oval engine. As it turns out, it's actually an LS7 with modified heads by Mercury, (yes the boat people.)

The 30k price tag isn't appealing, but cool the same.

http://www.mercuryracing.com/mercury-racing-reveals-sb4-7-0-automotive-crate-engine/

http://roadstershop.com/engines/mercury-racing-sb4-dohc/


1954 3600 Chevy Truck
"The Fake Truck"
In the Stovebolt Gallery
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Re: SB4 7.0
Whitedog #1275456 Tue Aug 07 2018 10:00 PM
Joined: Apr 2005
Posts: 2,837
C
'Bolter
Had a friend with a Viper that had been sent to San Antonio to have the "Venom" kit update and was fast but another friend had the Corvette with the DOHC Mercury Marine heads (which I think we made by Yamaha) and that sucker WAS fast. Both got the owners in a lot of trouble but they are still alive.


Evan
Re: SB4 7.0
Whitedog #1276221 Tue Aug 14 2018 01:39 PM
Joined: Mar 2008
Posts: 2,026
W
'Bolter
I found it interesting that Mercury was actually getting into the automotive world. They’ve been retrofitting automotive engines for marine use for decades, so I guess it makes sense. If you look at their website, they actually build a 9.0 liter 1700 hp engine too.
Merc. is building their own v6 in house now, instead of using the GM 4.3 and 5.0. I hope it turns out better than the 3.7 they had in the 80’s.

Kind of cool all in all.


1954 3600 Chevy Truck
"The Fake Truck"
In the Stovebolt Gallery
More pix on Photobucket
Re: SB4 7.0
Whitedog #1276913 Sun Aug 19 2018 05:04 PM
Joined: Aug 2007
Posts: 1,909
S
Grumpy old guy playing with trucks, cars, and boats
in a boat, that motor puts out 1650hp.its twin turbocharged and supercharged. I designed the heat exchangers for the motor back in 2009 when it was only 1350hp.

the SB4 is all mercruiser designed heads, intake, etc sitting on a custom built LS block

its limited in the automotive world only because it cant be cooled like it can in a boat.

they are building the 4.5 V6 as well as an up-coming V8 to replace the 6.2 they are building from parts from GMPP. the 502 is still a GMPP pile of parts.


The problems we face today can not be addressed at the same level of intelligence we were at when we created them - Albert Einstein Or with the same level of $ - Me
Re: SB4 7.0
Whitedog #1277342 Wed Aug 22 2018 02:22 PM
Joined: May 2005
Posts: 9,176
G
.
Shucks, I thought the SB4 would be a Small Block 4 cylinder. A V4 would be different, not real useful, but different.
Who needs another V8 gas engine?


1951 GMC 250 in the Project Journals [stovebolt.com]
1948 Chevrolet 6400 [stovebolt.com] - Detroit Diesel 4-53T - Roadranger 10 speed overdrive - 4 wheel disc brakes
1952 Chevrolet 3800 pickup [stovebolt.com]
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