Cam and valve event gurus needed [Archive] - Chevelle Tech

: Cam and valve event gurus needed


Team140
Nov 30th, 04, 11:10 PM
OK, here's the deal. It's not Chevelle related, but it is LT1/LS6 related.

A little background: I just bought a 10th Anniversary RX-7 and the engine popped Friday night. At 371HP to the wheels, I knew it wouldn't last long, but I was optimistic smile.gif I'm going to perform the most haneous crime (according to RX-7 and rotary engine nuts) that I can do to this car - put a V8 in it. Putting a V8 into a collector's edition RX-7 in which only 1500 were made will probably net me a lynching sooner or later.

Now, I don't want it to sound like every other V8 out there, but I don't want to go with a radical cam either. I know some of you will probably not like what I'm going to ask, but I don't know of a more knowledgable group of people to ask this question.

Can a cam be custom ground to alter the firing order to make it sound different? I'm a Chevy guy at heart, but I've got to admit that the late model V8 Mustangs (even the older 5.0) have got a very smooth and unique sound. Can a cam be ground for the LT1 or LS1 to have the same effect?

I'm leaning towards the LT1 because fitment is a little easier and the price difference is still staggering. ~$1800 vs ~$4000 with the 6 speed on each.

70GS455
Dec 1st, 04, 9:25 AM
I assume you've talked to these folks:

http://www.hinsonsupercars.com/

70GS455
Dec 1st, 04, 9:28 AM
The answer to your question is yes. Currently, folks are altering the firing order to swap 4 and 7, it requires a custom cam.

Team140
Dec 1st, 04, 10:05 AM
Thanks,

Yeah, Hinsonsupercars has been in my bookmarks FOREVER. I've just been waiting on the right car to do it to and I think I've found it smile.gif

70GS455
Dec 1st, 04, 9:55 PM
Saw his car run at Steele, 10 sumthin at 140 sumthin. Drove it back to Tuscaloosa. Nice guy.

Scott_68_SS
Dec 5th, 04, 7:15 AM
LS1 already has the 4/7 swap I think.

I think an LT1 sounds better than a new 4.6.

Importtech
Dec 5th, 04, 9:04 AM
Originally posted by Team140:

Putting a V8 into a collector's edition RX-7 in which only 1500 were made will probably net me a lynching sooner or later.
I'll supply the rope.... tongue.gif

j/k ;) Many years ago I put a small block in a RX2. Rotory and Sbc are pretty similar is ouside diameter..

BLK64SS
Dec 5th, 04, 10:06 AM
As for the sound of the HO 5.0 stangs .. it must be in the exhaust system .. if you number the cylinders the same as an older SBC .. they fire in the same order