When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
I just pulled factory engine 89 tpi. Ordering Scat short block assembly 383. looking at 62cc to 64cc aluminum heads. Buying lt4/l98 converted manifold from Dave. Will Scorpion 210cc roller aluminum match ports? These heads are half the cost of AfRs. Are they flowing half the cc's ???
Any combinations are welcome
Last edited by Street89vette; 08-29-2017 at 12:02 PM.
Chinese junk.... don't waste your time and money. Disappointing power at best.... catastrophic failure at worst.
Cyl heads are one place where you do get what you pay for.... AFR makes a solid quality product and I have used both the AFR 210 and AFR 195 on 383's for CF members that put down some very good power. Here are a few of those builds where most everything about the combo is documented. You can duplicate any of these builds and have one of the best running C4's around.
383 AFR 195 street ports - engine dyno'd 535HP & 487TQ. 409RWHP on a Dynojet. He daily drives this car & grudge races a lot.... He and the car are very well known online, so I can't tell you what the car runs at the track but it's fast... much faster than you would think.... He's collecting parts to have me build him a BIG SBC and needs money, so this whole engine can be bought very reasonable....
383 LT4 AFR 195 Competition Ports - 430RWHP on a Dynojet. I built this engine back 2008.... He had us swap it into 1996 Grand Sport #091 back in 2011 and it now has over 25K trouble free miles on it. He's been trying to get me to take it down the track for him but honestly, I have put him off forever because I'm scared to potentially tear up such a rare car....
If you want to save money there are good options for cyl heads that are US made and quality pieces. Chad Speier has a good deal on his econo port Profiler's.
Do they advertise a flow chart at all? Is there an option with less volume than 210cc? That is a lot of volume for a street 383. I was speaking with a local machinist yesterday about Pro Comp heads that you can get from summit/jegs that usually need some work when they come in to fix the problems. Just beware and give these a good inspection when they come in. I'm placing an order tonight with Jim Barth for AFR 195s. Buy once - cry once!
The intake should be more of priority unless you're going to carb it. Some of the better efi ones are hard to find at thrifty prices. You will want to match intake to cam operating range.
1) AFR's
2) Trick Flows
3) Valve job and port the 113's
Why do Chevy people go to cheap Chinese junk? Are they that cheap or broke? I see it all the time.
Keep saving OP and get the good stuff, theres a lot more to a good head than price and a flow sheet. One co has picked thier #s up but is still poorly machined cheap junk.
Usually the kids buy em everyone has to learn sometime.
Nothing good is gonna be had for cheap, period unless its some blowout deal from GM
1) AFR's
2) Trick Flows
3) Valve job and port the 113's
Why do Chevy people go to cheap Chinese junk? Are they that cheap or broke? I see it all the time.
It might be my bad experience from when they came out with the Twisted Wedge heads and maybe they corrected the problem but if I were to replace my heads today with Trick Flow heads, I'd have them bare and add my own hardware. We had a spring failure on #4 and the valve hit the piston, broke a chunk off and trashed the motor. Sure, these things happen but when we tried to fix the head, we found that all the passenger side valves were wobbling around once the springs were off. Had it patched up, sold cheap and bought AFR which I should have done or gotten LPE to port me a set of 113 heads. When the entire side wobbles and the other side is fine, it makes me wonder.
I was using a 74219 cam and TFS recommended the upgraded spring kit which I used and they said would work so I don't think I was overloading it. Yep, they were cheap too which was a good thing, I suppose. Wish it saved me enough money to pay for a new LPE short block. Had I known then what I know now, I'd have a LPE long block and not just a short block with TFS heads. Again, maybe things have been better since the first run but I'm not willing to chance it again as opposed to a tried and true solution.
Too much effort and time involved swapping heads to chance a no-name brand. Quality American made head prices have come down enough that its not worth the risk to shop elsewhere. Buy a known quality head then just bolt in on and go.
Too much effort and time involved swapping heads to chance a no-name brand. Quality American made head prices have come down enough that its not worth the risk to shop elsewhere. Buy a known quality head then just bolt in on and go.
Yes but people are idiots and always have hope that they can be the one in a million who beats the odds. Why do you think Vegas has so few big winners and so many losers with a system?
08-29-2017, 12:00 PM
Block-Heads-Intake combinations help
