bjankuski

RandomTask

Did you have the block decked? Just curious.

tpi 421 vette

It was decked the first time I built it. So this time they checked the deck, and it was fine. So we left it alone. I think the pistons are .005 in the hole.

383vett

Nice build Jim.

88BlackZ-51

Awesome buddy!!

1993C4LT1

That is wicked

cardo0

Man that's an awesome machine. You are on the limits of small block Chevy. I think that build is not for beginners. Is it race only now? Street use at all? Pump gas? Have to ask what size are the header tubes? Did use an adapter plate?

Thx for sharing!

Tom400CFI

IDK what size the tubes are, but I see adapter plates in the pics.






And between the header flange and head, here:

tpi 421 vette

It's a street car that will run on pump gas. I use Sunoco 112 with the nitrous. The headers are 2" primary tubes with 3.5" collectors.
These tall decks probably aren't for beginners. There are alot of different issues you run into. The cam is raised .391, the pan rails are spread .400, there is no oil filter mount, so you have to use a remote oil filter. The distributor is at a 5 degree angle instead of a 4 degree angle. So the dist pad on the intake needs to be machined. And you need a adjustable slip collar on the dist, so it will go in deeper into the block. And of course, you need intake manifold spacers to reuse the standard deck height intake manifold, since the engine is now taller and wider. And with a roller cam, you need to find a timing cover that is set up for a raised cam. This Cloyes timing cover actually has a cam button in the cover for a raised cam tall deck.

tpi 421 vette

I put a Hurst shifter in it while I was at it.

cardo0

Overlooked the plates as gaskets I guess. Overlooked that Ram manifold as a single plane too. To bad he's not run a T-flop manifold though he must be leaving horse power on the table without it.

Tom400CFI

Yes...b/c T-Ram's were designed for the average 450+cube, 700+hp engine. Can't let it go...can ya.

MatthewMiller

Are you really going to start that line of ignorant crap again in a thread that has nothing to do with it?

MatthewMiller

[QUOTE=cardo0;1597296767]
That's not the line of crap I was referring to. You two can take that offline and use PMs for that stuff. I'm referring to the continued disinformation about how intakes work vis-a-vis Helmoltz resonance, single-plane vs dual-plane intakes, and the success vs production numbers of certain intakes. You know, all the stuff you're wrong about. Our members here need accurate information, not silly misinformation. So if you can't help yourself, then at least don't **** up new threads with this crap.

Tom400CFI

Posts reported. This thread is way too awesome to get bogged down.


Killer build, Jim! Don't be afraid to throw more pics in. That engine is art work.

tpi 421 vette

Here's a couple more. I got it on true TDC to double check my adjustable timing pointer. Then degreed the cam afterwards. I forgot to get pics of the degree wheel on it. But I degreed the cam the first time, and it was right on the money again this time. But it is the same cam.

Tom400CFI

You mentioned earlier that the cam is raised. Is that specifically to clear a bigger arm crank, or does that solve other valve train geometry at the same time? I'm not exactly sure how raised cam helps valve train geometry, but I believe I've read about that previously. This way outside of my realm of expertise.

Also, Are the lifters offset? It looks like the push rod cups are offset, but as much as the rockers? I see that the rocker arms are...I'm guessing to clear larger intake ports? It looks like the exhaust is offset slightly in the other direction...is that b/c of valve size? If you don't mind, I'd love to hear more about the valve train. You're truly taking the SBC where it was never intended to go. I dig it.


.

confab

Beautiful to look at.

Too complicated for me, but it is nice to see others Star Trekking it right on out there where nobody has gone before.

tpi 421 vette

You have a good eye for detail. First the raised cam is mainly so the rods don't hit the cam. Usually when I do stroker builds, you usually end up with a smaller base circle cam to help with rod to cam clearance. This build I was able to us a regular base circle cam because it's raised. Same with the oil pan rails spread .400 to help rod to block clearance. Plus you end up with bigger, wider main caps. And 4 bolt mains on all 5 main caps instead of just the usual 3 center caps having 4 bolts and the end caps being 2 bolts.

With the AFR heads, the bigger heads AFR 227, 235, and 245 heads have a 60/40 valve split. So you end up with a offset exhaust rocker. The 245's require a shaft system because intake port is bigger, and has no pushrod pinch.It has a 2.125 intake valve. So you have to use a shaft system because the offset is so great. There are two ways to do it on the 245's. With a .550 offset, you can use a regular lifter. Or you can use a .450 offset and a .180 offset lifter. I had this shaft system I was going to use on a 409 build and some AFR 227's. I ended up getting it for a good price. So I used offset lifters so it would work on the 245's.
One additional note, the AFR 227 or 235 would use a .450 offset if your going to use a shaft system

Tom400CFI

That's pretty neat. I love "puzzle solving", and you've done that with a combination of parts. It helps (obviously) that you're familiar with all the dimensions, options, etc to put together a system that allows you to run essentially BBC sized parts on a SBC. Thanks for the detail!