8 replies to this topic

[Bob Riebe]

https://www.motortre...=emaileditorial

 

This unusual engine being put together by fabricator Mark McDonald and his son Corbin for a 1993 5.0L Mustang. As Mark told us, "I got the idea after I had Chuck Lawrance, of Lawrance Engine and Machine, build a GM LT4. He told me the heads were very impressive for something stock and were better than many aftermarket heads out there. This sparked my interest and the fact the heads shared the same valve arrangement as a small-block Ford." Mark had an old 302 block in the shop and started getting ideas about how he could mix up what seemed like a batch of oil and vinegar.

 

 

The GM LT engines use a direct injection system (DI), and although Mark could have figured out a way to run it, he decided his life was complicated enough and went with traditional port injection.

[10kDA]

I think they sidestepped the biggest potential down-the-road problem by deleting the direct injection setup LOL

[Magoo]

Without sophisticated tools, mapping a GDI system from scratch is tricky. Rail pressure is high and the pulse widths are very short. 

 

Also, piston dome design is sensitive. 

 

Oh, for the good old days when sequential port fuel injection seemed mysterious. 

[Bob Riebe]

I think they sidestepped the biggest potential down-the-road problem by deleting the direct injection setup LOL

Just make a manifold for 4 Winfield Carbs!

[Magoo]

Because it's so easy and boring to use heads and cylinder block from the same manufacturer. 

[Bob Riebe]

Because it's so easy and boring to use heads and cylinder block from the same manufacturer. 

As much as I LOATHE, putting Hemi engines in an AMC, or any such bastard creation, there is some thing about this set-up that I find interesting.

 

How many other small-block Chords are out there --  at that --  the after market Humungous Block engines used now-a-days are Ford, Chevy etc. only by small tech.differences, or name only.

 

When this one is done, it would be nice if a dyno pull  numbers, are printed.

[Wuzak]

Won't it be, more or less, the same as the heads' original Chevy engine?

 

Around 360hp on gas?

 

I'm guessing the idea is that using the heads from such an engine is cheaper (from a wrecker?) than heads with similar performance from the aftermarket or Ford?

[Bob Riebe]

Won't it be, more or less, the same as the heads' original Chevy engine?

 

Around 360hp on gas?

 

I'm guessing the idea is that using the heads from such an engine is cheaper (from a wrecker?) than heads with similar performance from the aftermarket or Ford?

Different fuel system, can, or may, make a difference.

[Lee Nicolle]

LS heads on a 302W. Why would you bother. Plenty of good aftermarket heads out there for those engines. Without the very obvious of Cleveland heads as Ford did in 69,, Boss 302!

Or something a LOT better with a CHI 3V head, About a 100% better than the Clevo head. And it all bolts togetter like it was made to.

Here in Oz there has been a deal with putting crossflow Falcon heads on Holden 6s. Or a sohc Falcon head as well. I have heard of the DOHC head as well. 

Horsepower can be ok. But for all the work a Phil Irving [yeah that bloke]  downdraft head or Duggan head probably makes more. In the 70s when the Irving head came out they were touted for both Holdens and Fords. I have seen pics of one on a Falcon motor but never on the track. Irving head Holdens however were common on race engines with more than a few on street cars as well.

Though I wanted one and could not afford to buy one,, so I simply fitted a 350 Chev. Faster than any Irving head Holden  and running on scrounge a LOT cheaper as well.

All the ooh aah from drag racers with the LS they are cheap power in near stock form. Once you start getting away from that spend the money on a SBC. Cheaper and 5 bolts per cylinder