Planning future 427 build
11-29-2012, 09:09 PM
#21
I am about to start a project with a 427 also, but off of a 6.0 Iron block... forged crank, forged low compression pistons, forged bottom end, bored over .60 etc etc... Its going to be a boosted engine with a PT 88mm .96 AR Housing on Meth (Snow's) havent started on it yet, I want to get everything together first before starting. My Trans Am at the wheels should push anywhere from 850-950RWHP but I dont want to push over 20PSI because walls are too thin. In a 7.0 block you can easily push 20psi, its a strong iron block. I think Aluminum blocks are more safe for Nitrous than for any other boost set up in my opinion
Going in my 4th gen Z28.
I've been wanting an LS7 lately, but I think that may be a bit more of a hassle. We'll see what the GenIV group thinks.
My reasoning lately is that I'm pretty much wanting something that drives like stock. Granted My PatG Cam is pretty "tame" but with the 102/102 intake and ~500flywheel it makes it kinda punchy. And it's getting to the point in the game where I have to start keeping track of mileage and uses on everything in the car, and will have to look into replacing the valve springs soon, new push rods, replace the rocker trunions. Uuugh..It's a lot of babysitting for a street car. Not to mention the return fuel system I have. But I'd like to pick up where I left off HP wise.
No High maintenance TT setups please ($$$$$ also.) No real budget idea yet. But maybe under $10k for the engine after all is said and done. My trans and fuel system is built fine, so I don't have much else to worry about.
Here's what I was kicking around the noggin: Either an LS7 crate engine with a pimp set of West Coast heads (or equivalent,) slightly milled.....That's it. Looking for about 550flywheel or 480rw. Can I do a wet sump LS7??
Or else I could try and find a built shortblock 427 from an LS3 or L99, with a very good set of heads, milled slightly to bring the compression up a bit. If I were to do a cam, I would want something VERY mild, with maybe a 115 or 116 lobe separation and so I can either run stock springs or a very long lasting set of equivalents. Was thinking a good set of beehive single springs.
Just looking to spit-ball some ideas here... Just future planning....Maybe I just need a C6Z..
Thanks for the advice.
I've been wanting an LS7 lately, but I think that may be a bit more of a hassle. We'll see what the GenIV group thinks.
My reasoning lately is that I'm pretty much wanting something that drives like stock. Granted My PatG Cam is pretty "tame" but with the 102/102 intake and ~500flywheel it makes it kinda punchy. And it's getting to the point in the game where I have to start keeping track of mileage and uses on everything in the car, and will have to look into replacing the valve springs soon, new push rods, replace the rocker trunions. Uuugh..It's a lot of babysitting for a street car. Not to mention the return fuel system I have. But I'd like to pick up where I left off HP wise.
No High maintenance TT setups please ($$$$$ also.) No real budget idea yet. But maybe under $10k for the engine after all is said and done. My trans and fuel system is built fine, so I don't have much else to worry about.
Here's what I was kicking around the noggin: Either an LS7 crate engine with a pimp set of West Coast heads (or equivalent,) slightly milled.....That's it. Looking for about 550flywheel or 480rw. Can I do a wet sump LS7??
Or else I could try and find a built shortblock 427 from an LS3 or L99, with a very good set of heads, milled slightly to bring the compression up a bit. If I were to do a cam, I would want something VERY mild, with maybe a 115 or 116 lobe separation and so I can either run stock springs or a very long lasting set of equivalents. Was thinking a good set of beehive single springs.
Just looking to spit-ball some ideas here... Just future planning....Maybe I just need a C6Z..
Thanks for the advice.
12-08-2012, 03:45 PM
#27
This guy built a really nice and very mild Darton sleeved 427. WCCH L92/LS3 heads and FAST. I think it made 577/530. Lots of good info in this thread.
https://ls1tech.com/forums/generatio...b-c-d-e-f.html
https://ls1tech.com/forums/generatio...b-c-d-e-f.html
