355tpipickup

iTrader: (5)

I found a deal on the 1038 afr heads with 75ccs. How much can these heads be milled. anyways to get them milled into the low 60ccs? if so how much will it mess with flow?

Atilla the Fun

in theory, you could mill them 0.060", and be around 65cc. This would also require milling the intake manifold, at a minimum.
But that doesn't mean it'd be acceptable for the rest of your engine combo. If it's a basically stock L98, then this would be a big mistake.
Post up all the details on the engine you want to put these on.

355tpipickup

iTrader: (5)

hypert flat tops with stock cast iron heads. I was told by the builder im running about 9.6-1, stock replacement head gaskets. With my cam im goin to put in i need to be runnin about 10.25-1 with a quench around .040-.050.

Atilla the Fun

A 350 with F/T 4VR pistons 0.025" in the hole at TDC, with FelPro 1094 head gaskets, and 65 cc heads will give 10.00:1-10.20:1, depending on the exact pistons. Like SpeedPro H345 pistons are 5.0cc, but most others are 6.0cc.
Really, a 195 head is too much intake port volume for any 350 that doesn't live at 7000 rpm, and with hypereutectics, you're not gonna do that.
195s also don't match up with long-runner TPI, the mis-match in cross-sectional area is just too excessive. You need a TPiS Mini-Ram II.
These heads on a 350 are gonna truly suck below about 2500 rpm, compared to the low end torque you would get with Vortec heads, no matter what cam.
If you're getting such a great price on them, either sell them at a profit, and go with some good 180cc heads, or apply the savings to a 383 stroker.
With the heads milled 60, you're going to have to watch the piston-to-valve clearance, and milling the intake, which MUST be done, will eat up all your savings.
This is a compromised build, and is false economy.

355tpipickup

iTrader: (5)

Yea ill prob pass on the heads. dont want to mess with the SR at all to get the heads to fit right. After i finish the port work on my SR it will flow close to if not over 300cfm. With my 224-230 .57s lift 112 cam it should see close to 6500rpm. There are a grip of people running the 195afrs on small block 350s. There are a lot more runnin the 195s vs the 180s on this site i know that much!

Atilla the Fun

That's true, but that doesn't make it right, or even good. Good 180 heads will support a 400 to 6500 rpm, making 525 hp, so who the heck NEEDS 195s on a 350? Every one of those misguided sould would find tenths by swapping down. Average power would improve, as would driveability and mileage. I keep trying to tell as many as I can.

Dyno Don

iTrader: (7)

You need to rethink that idea and stop telling people that.
Most of us on the west coast are using 195 heads on 350's with great success.

If you took the time to actually measure the heads, you'd find that most of them are just a lttle over 180 cc's, they just call them 195's. Even AFR 195 comp ported heads only measure 189 cc's.

My own combination, 355 TPI short runner setup puts out, right at 400 rwtq. @ 2700 RPM's (370HP) and gets 20+ MPG on the hwy. cruising @ 2200RPM's.

Atilla the Fun

First, I'm not responsible for your cheap Chinese burette.
AFR's current basic 195s check 193 cc on my high-dollar American burette. The basic 180s check at 177.
You might be doing well enough to suit you, but gaining another 20 ft-lbs at 2000 rpm, with no loss at 6000, that's enough to justify staying small. If you like giving up a couple of tenths, no skin off my hide.
You need to stop telling people there's no disadvantage to stepping up, because it's independently verifiable that you're wrong and I'm right.
A 350 cammed, intaked, carbed and headered for idle to 6500 just doesn't move enough air to find ANY benefit from 195s over 180s. SuperFlow dynos don't lie, even if Dyno Dons do.
I'm not gonna let you mislead people without telling them they're being mislead. You can't prove me wrong, because the laws of physics are on my side.

355tpipickup

iTrader: (5)

Ok question for you guys. Whats goin to give me the best all around power to push my heavy azz truck around town and at the track. I would love to hold my own with some corvettes and other street rice cars around my town. My build is goin to be a 356 full bolts one with a hogged out welded SR that will support close to 300CFM, 52mm TB, 30-32lb injectors, long tube headers with 3" collectors and full 3" exhaust no cats. XFI lobs 224-230 .57s 112 cam with 1.6RR. built 700r4 with yank 2800 stall. 3.73 gears posi with 26-28" street slicks. If the short block does not like the 6,000+ RPMs and it blows up, i will then step to a 383 or 400 and swall all the part to it. I also have a full nitrous system with all the safty parts that i would like to add to play with. 50-125HP shot.... With that said whats the best head for me? i have been told i need to be as close to 10.25-1 for my cam to gain the most out of my project. I would be very happy to see mid-low 13s on motor but not sure if it will get them there or not with my 350.

355tpipickup

iTrader: (5)

if i could afford it i would think the comp port 180s would be the ticket but who knows....plus thats a lot of cash.

Atilla the Fun

Your combo is like nothing I'd put together, but should have great mid-range. If that's a Lingenfelter/Accel StealthRam, then it'd do fine with 195s, but only on a 406+
I guess you're too invested to stop ans switch to an LQ9, but getting one to 500 crankshaft horses is just a matter of the right cam.
Figure $1500 for the LQ9 from LKQ, then another $700 to do the cam swap right, with new springs, pushrods, gaskets, et cetera.
Getting 400 RWHP ( manual trans ) with stock exhaust manifolds and a mild cam has been done, so long tube headers would add power, but not be necessary.

355tpipickup

iTrader: (5)

Its a Lingenfelter/Accel Super Ram. not the stealth ram. so agree to go with 195s now?

Dyno Don

iTrader: (7)

I don't even have to say anything, just read......

Unless you think you know more than AFR?

http://pr.alexadv.info/sb-chevy-elim...rtec-head.html

355tpipickup

iTrader: (5)

Its a done deal anyways. i ended up snagging these!

https://www.thirdgen.org/forums/engi...195cc-sbc.html