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1000hp 292 6cyl !!!

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cobra2411

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Discussion starter · #1 ·
#3 ·
That is pretty sweet.... how do people figure out how to do this stuff?? I never would have known that a SB head would be anywhere near close enough to fit on an I6.

Reminds me of the dude with the turbo 2.3L 79ish mustang. Had modified a Toyota cylinder head to fit the 2.3 Ford engine....

Crazy custom stuff like that really amazes me.... :)
 
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#4 ·
There's a guy around here that used to run a Ford 300" six with what was supposed to be 2 Boss 302 heads welded together like that. I was a little skeptical because of the difficulty welding cast iron but I guess anything is possible if you really want to be different.
 
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#5 ·
Amazing what you can do with the right tools.

I never would have guessed that the cylinder spacing would be equivalent.

And it even gets him a cross flow head. Amazing.
 
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#6 ·
1000HP and only 135MPH in the 1/4? Hmm....

Did they have to modify the head bolt pattern? I wonder how that worked out.
 
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Discussion starter · #7 ·
Silver69Camaro said:
1000HP and only 135MPH in the 1/4? Hmm....

Did they have to modify the head bolt pattern? I wonder how that worked out.
Click to expand...
Well they say "...the quest for 1000+hp"


Bolt pattern on the second link looks like stock SBC. The valves are in so either it worked as is, or they modified the block...

David
 
#8 ·
This is actually very old tech, but little known. I'm sure PDQ67 will pipe in with some info, along with a few of the other guys that remember when people were doing this with "double hump" heads and the like. Cast Iron is hard to weld but it can be done.

There is a book about hot rodding the Chevy Inline 6 that gives a pretty detailed guideline on how to do this converstion. I believe it includes templates for certain modifications. I do know that you have to have special intake, I'm not sure if someone makes one or not. There is also an issue with the lifter/pushrod covers on the side of the block. There's a lot of little things that change.
 
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#9 ·
I'm here!!

The head stuff is old tech, BUT what I want to know is how they got the 6-banger out to 4-1/8" bore??

When a 292 is 3-7/8" to begin with....

AND the COOLEST one I have a mag article about is the Father-Son Welding Team that took two 350's and furnace welded them together, the four heads together, the two intake manifolds AND I think the cranks together to make a 700" V-16 motor!! I think the two cams were coupled instead of welded....

They even offset the two cranks a quarter of a revolution to smooth it out...

pdq67

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#10 ·
Let's face it, it's easier for the designing engineers to modify something existing than to start from scratch, so there may be a lot of similarities between various. I have been told several times that the reason Chevy's 4.3 V6 was such a good engine is that it was basically manufactured as a 350 with two cylinders chopped off.
 
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#11 ·
The Santucci engine obviously hasn't made it to the 1,000 hp mark. His 10.05 e.t. @ 135 mph was from a couple of years ago - I have no idea of what he has done in the interim.

Anybody remember Kay Sissell?
http://www.twotogo.homestead.com/files/Four-Sixcyl/2-Sissell-4opt.jpg

For those who have never heard a high rpm inline six, they have a very smooth and sweet sound.

Thomas
 
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#12 ·
speaking of the 4.3V6, I wonder how hard it would be to bolt to of the V6 heads on an inline, with some kind of tubing to transfer the oil/water from one head to another. Might be easier than chopping and welding the sbc heads. Although, it wouldn't look nearly as clean and the port alignment might not turn out so well.

Yes the 4.3 is a 3/4 version of a 350. Pistons, lifters, pushrods, connecting rods and even distributor housings on some models will interchange with the 350.
 
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#13 ·
Nice fab. Now thats "Just do it" or "If you can't find it, then make it" kind a deal.
 
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#14 ·
If you notice, when GM designed the SB back in '55 and later designed the 153", 4-banger and redesigned the 194"/230"/250"/292", 6-bangers in the early '60's, they used the same motor mount pattern, bellhousing bolt pattern and head-bolt spacing on the 4 and 6 cylinder motors as was on the original SB.

AND they kept the same motor mount and bellhousing bolt-pattern on both the 348"/409"/427" "W" motors and newer BB's too!!

AREN'T we lucky to run Chevy MOTORS!!

JUST take peek over at both Ford and MOPAR sometime and see how non-interchangable their motors and parts are...

Been there on my 221" and 260" Ford motors!!

pdq67

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#17 ·
Bomber '67 said:
The Santucci engine obviously hasn't made it to the 1,000 hp mark. His 10.05 e.t. @ 135 mph was from a couple of years ago - I have no idea of what he has done in the interim.

Anybody remember Kay Sissell?
http://www.twotogo.homestead.com/files/Four-Sixcyl/2-Sissell-4opt.jpg

For those who have never heard a high rpm inline six, they have a very smooth and sweet sound.

Thomas
Click to expand...
Glen Self of Durant Oklahoma is another old time inline six cylinder modifier. He has held the "I-6" M/P records quite a few times.
 
#18 ·
Don't recognize that four valve head? Doubt if it is two Quad-4 heads b/c I don't think it is patterned after the 153" blocks bore spacing... I think the Quad-4 is a new block??

This stuff is why I would really like to get my hands on a COMPLETE engine bore spacing spec list!

All engines from 1949 to the present. This way if we wanted to we could pick and choose and mix and match!

He, He!! Can you picture a set of Super Red Ram Hemi heads on a SB??

pdq67

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#19 ·
Here's a picture from a June or July 1970 Hot Rod magazine I got new. It was a 292 truck six with a pair of sectioned SBC heads, Hilborn fuel injection & a Vertex magneto. It powered a late forties Anglia drag car based in London, Ontario called 'The Knob Hill Mob'.
The stock Chevy straight six (& 153 four) used the same bore spacing as the small block V8, plus they also used the same 1.72" intake & 1.50" exhaust valves as the 283 & 307 V8s. I'm sure you could go bigger, plus with some modifications by Kay Sissell Performance you could make some power with the regular L-head.
 
#20 · (Edited)
Check out Harry Stirnemann's '37 Chevy.

http://hotrod.com/thehistoryof/67158/index4.html

I believe it has run in the 9's. Engine built by Paul Sartin; same guy that built Jack Stirnemann and George Lange's "996" Bonneville roadster engine, DF: have you seen this car run?
 
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pdq67
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