I am new here and I figured this would be the place to get some good pointers and ideas for my build

Project-

I need to wrap up my frame off rest on my 73 vette with the perfect engine. I want to build a 427 sbc LS based engine or something recommended by those with experience on the board. So which to choose LS2, LS3, LS6??


I can fit a Magnussen supercharger under the hood also so I will use this to get the power levels up. I need help with picking a combo that can yield 600-750rwhp and streetable.

So what parts would you pick???
1. displacement
2. heads
3. Engine management

I want to use parts that are the best and most easily accesible?

Thanks

 

Well you have a few options, I'll pm you with some info.

 

I personnally think that a 427 and Stingray just go good together, like Peanut Butta and Jelly. Kinda like a COPO Camaro. But thats just me.

 

Since you want to go FI, I'd say LSX block and 4.125 bore with 4" stroke for 427.

If you needed to bore or hone it again, there would be plenty of iron left.

BTW, Nice camaro SS Dave !

 

LSX block would be great, but might be hard to find one you can get anytime soon. Last I heard they were on back order everywhere... but I could be way off.

 

LS9

 

sc'd or turbo 402 or 408

 

What trans and rear end do you plan to use for that kind of power/torque? I hope not OEM '73 stuff. If you are going auto trans you won't have too much trouble with a built THM 400, but the rear end might be trouble. Of course that depends on traction. How much rear tire are you talking about to harness that engine?

FWIW, have you ever driven a 700+rwhp 70's Vette on the street in anger?

If it were my car, I'd do up a single-plane EFI 402-408 inch LS engine and make it look as much like a BBC as I could. 500+ at the tires has been done relatively easily and it is super-streetable. It ain't slow either!

To each his own.

Good luck.


Jon

 

LS3 with a TVS 1900 on top sounds like a lot of fun to me. I had a '73 vert back in the day. Low compression 350 that barely had enough power to get out of its own way. It was good lookin' and produced a lot of memories . Had a soft top and removeable hard top. A classic like that with 500 hp at the wheels and perfect street manners would be a blast. If you could fit a 5 or 6 speed behind it, that would be the ultimate fun ride in my mind.

They are just now bringing the newer magnuson blowers to market. I had an mp 112 and now a 122 on 5.3 & 6L truck engines. They snap a 5000# truck around with ease. A 3000# vette with a new generation magnuson on top would be scarry fast.

 

if you check out the february 09 issure of HOTROD they show a chevy small block new block from World Castings that accepts LS cylinder heads but uses standard chevy small block architecture. its called the Motown LS hybrid . the engine in the article had a 4 inch stroke and 4.125 inch bore (427ci). heres a quote

"The very first pull on World's dyno netted 629 hp and 579 lb-ft. That's about 70 hp more than one of World's regular Motown small-block 427s and about 15 more than the company's typical Warhawk LS combos."

the heads are ported World Products Warhawk LS-1s, any LS intake bolts right up because it has an LS-production deck height, and the distributor drops in at the rear like a sbc but uses the firing order of a LS.

thought that article was cool and if i was doing a frame off resto thats what id go with.

 

Yeah I read that article. Very interesting. There have been have few good articles in there lately. Did you see the one about the Salem speed shop?
I might take a drive and go check it out just to talk to the guy.

 

LME 427 in front of a 4L60e. Yea, 500 can be alot of fun on the street.

 

Nice to see people still build these cars to drive. Camaros dont belong in a garage dreaming of a street to terorize.

 

Camaro's and 73 Stingrays. I can't agree more. Buy, Build it, then Beat the hell out of it.

 

I have had a few different vipers so far in excess of 900rwhp so I know that 600-700rw would be a strong target for the ole vette . Im hunting the right fit now so keep the ideas coming.