sbc in a MK3...

[lowtaco]

Which heads do you plan on going with? How did you make your motor mounts? Nevermind, I forgot it's posted on the first page.

I am still saving for the AFR 195's but have a nice set of ported 487's now with 2.05/1.60 valves will roller springs to get me started

Probably "bad mother fucking small block chevy for the mother fucking win."

Winner!

Oh and the mounts I made work great but do to header clearance issues I need to do a re think on them.

 

[lowtaco]

Wiring owns me... I know this is just a easy sbc swap but I decided to get rid of all the extra wiring that isnt needed. So I have stripped the car of all the wiring and de-pinning all the un needed circuits. I had so many that were hot with ign on I didnt want to just cover them over and chance burning the car down.
So far everything still works lol, Im glad I have the factory wiring diagrams to help.

 

[lowtaco]

Getting back to the dead thread... Sold the ported 487's, bought a set of Darts SHP 200cc heads with 72cc chambers. Finished the engine off with Harland Sharp rockers, Comp pushrods, Dart SHP intake and made a new set of solid mounts.

 

[lowtaco]

Better view of the new mounts... The legs attach to the factory crossmember with 1/2" bolts. A person could easily make the legs 1/2" shorter and use a flat rubber mount bushing (V8 Landrover) and not have to worry about being solid mounted. I still plan to run a poly trans mount just in case.

 

[IJ.]

Why not run rubber mounts?

 

[Poodles]

SBC + solid mounts = I'll NEVER ride in a car like that again

 

[te72]

SBC + solid mounts = I'll NEVER ride in a car like that again

Curious what that feels like... I imagine something like riding a hardtail Harley on a bumpy road?

 

[Poodles]

The guy didn't run them for long. He got tired of screws and interior trim falling off...

You couldn't see out of the mirrors :rofl:

 

[lowtaco]

The car wont be daily'd so I can live with it. End result will be a bracket/grudge type car.

 

[te72]

The guy didn't run them for long. He got tired of screws and interior trim falling off...

You couldn't see out of the mirrors :rofl:

So, about as smooth and balanced as a sober man on a cruise ship?

 

[lowtaco]

I wanted to use the factory rubber mounts but figured they would rip apart eventually. Solid mounts have been used for years in race cars, I should have just used an engine plate instead.

 

[te72]

Could always just say that all the shaking is all that Chevy power, if anyone happens to ask... if it doesn't bother you, then why worry about it? It's a MAN car, not some sissified comfy commuter-mobile, right? DAMN STRAIGHT, who's with me?

 

[lowtaco]

A well balanced engine should run smoothly anyway. I had everything balanced when I sent the parts to the machine shop so no worries.

 

[Poodles]

SBC's are inherently unbalanced...

 

[lowtaco]

SBC's are inherently unbalanced...

And JZ engines are like LSx engines. Over-rated.

In other news I have finished another set of adapter mounts using the factory rubber mounts. These give 1/2" clearance under the pan and plenty of room to access the bellhousing bolts.

 

[Riceman83]

Hey hey now,I'm using an ls and I can't agree cause most of my factory parts are better than most gen I aftermarket parts...

 

[lowtaco]

Hey hey now,I'm using an ls and I can't agree cause most of my factory parts are better than most gen I aftermarket parts...

Only thing the LS engines have going for them is they have an improved runner design and 15 deg valve angle. Take a Gen 1 engine with 18 deg or less heads and it will stomp a LSx.

 

[IJ.]

Only thing the LS engines have going for them is they have an improved runner design and 15 deg valve angle. Take a Gen 1 engine with 18 deg or less heads and it will stomp a LSx.

Yeah ok....

Stock for stock EVERY SINGLE ASPECT of an LS is an improvement to a SBC....

And this is coming from someone that has owned and built SBC's for 30+ years.

 

[Riceman83]

I have stock 799 cast heads and they will compare to most aftermarket gen 1 heads of same cc intake runner and still have a better velocity for street use. Step up to the l92 or ls7 design and then your into bbc flow rates. That's just for the basics. The motors as a whole are just build light years ahead of gen 1 design. I'm not here to bash a gen 1 I'm just saying ls are not as you said over rated. If you took the best gen 1 350 design and an equal ls1 and spent the same amount of money on both I would have to say ls would win hands down. Especially in durability.

 

[lowtaco]

I have stock 799 cast heads and they will compare to most aftermarket gen 1 heads of same cc intake runner and still have a better velocity for street use. Step up to the l92 or ls7 design and then your into bbc flow rates. That's just for the basics. The motors as a whole are just build light years ahead of gen 1 design. I'm not here to bash a gen 1 I'm just saying ls are not as you said over rated. If you took the best gen 1 350 design and an equal ls1 and spent the same amount of money on both I would have to say ls would win hands down. Especially in durability.

I understand that the reason for building a new engines is to improve what you have or redesign to make something better. The LS engines are quite a bit better then the Gen1's. The reason I say its overated is because everyone makes it out to be the best engine going, just like the JZ series engines. Nutswingers. I appreciate that the LS is a great design, but dollar for dollar if it was such a great design why is it that racers still build older style/technology motors.