Trick Flow's 205cc heads
Compression height on the pistons is the same. The 4.8 pistons are the same as what are used in the L33 H.O. 5.3 that GM put in the trucks in 2005-2007.
http://static.trickflow.com/global/i...s%20vortec.pdf
It's their main current website. Above link is the flow chart from there.
It's their main current website. Above link is the flow chart from there.
http://static.trickflow.com/global/i...s%20vortec.pdf
It's their main current website. Above link is the flow chart from there.
It's their main current website. Above link is the flow chart from there.
year old thread were probably with a 3.900" hench the slight differences.
IIRC these also have powdered metal guides which are factory rocker arm
compatible. Trick Flow makes really nice stuff !!!!! PERIOD
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
Awesome K5 Blazer Restomod Comes With C7 Corvette Power
Verdad Gallardo
10 Camaros You Should Never Buy
10 LS Engine Myths That Refuse to Die
Verdad Gallardo It won't generate great wow numbers but would be a blast to drive around town. I've got a 346 right now and putting on Mamo 220 heads. (2 ish generations after the AFR 205's) and am thinking about sleeving the block down to a LS1 427. In 4" stroke form. Should make a TON of tq.
With a 402 you can tailor the CR with pistons. My 220's are going to be 60cc with a really nice tight quench. I'm really excited.
With a 402 you can tailor the CR with pistons. My 220's are going to be 60cc with a really nice tight quench. I'm really excited.
I would expect them to have incredible midrange and possibly peak a little early on larger cube engine. You would need to dish the pistons. I think that genX 205 would make a phenomenal truck head
With a 5cc dome and 040" head gaskets on a 402 with a 58cc head, the compression ratio is 14.5:1. Using my cam for reference, the dynamic is 11.1:1! My engine has 10.6:1 STATIC compression
Larger cube engines have a higher appetite for air. If you take a head designed for smaller displacement and put it on a larger engine, it can breathe well enough in the lower rpms, because there is plenty of time to draw in air. However, at the higher rpms, it would quite literally starve for air - or at least go on a severe diet. You could compensate for this somewhat by using a larger cam, but in the end, the heads will only flow so much.
I don't want to hijack a trickflow thread, but I am more familiar with AFR and MMS. The MMS 220 was designed to optimize a 346 CI engine. the MMS 235 was designed to optimize a 400 CI engine. Tony did such a good job designing the AFR 205, that its still hard to beat on a 346. I'm sure someone more in the know on trickflow heads could substitute TF model numbers in there.
The need for more air is one of the reasons you'll see occasional threads where someone built a 408 bottom end, kept their heads from the 346, and ended up underwhelmed by the performance. It's all about the combination being happy together and working together (I can't see me lovin' nobody...)
13.2 static, 10.1 dynamic (cam dependent). Still too high for pump gas. I would stay at or below 11.5 for pump gas. If you lose the dome, and go to a 5.3, you're at 11.2. Perfect truck head.
Teching In
Joined: May 2015
Posts: 19
Likes: 0
Oh ok, I was trying to figure out if I can buy some 205 heads and use em later because I want a 6.0 for sure later, because I have a 5.3 in my camaro now, but I guess I'm jus being impatient and cheap at the same time. I don't really care too much about rpm's over 6500 cause that's kinda to high I feel to daily drive so that's why I asked
No, I meant 427. :-) Resleeve the block. Run a 4.125" bore and a 4" stroke.
The 205's would be fine on a 6.0l. Bit small on a stroker.
You can find the 205's and 210 afr's in the classified section all the time. Even bnib for great prices.
The 205's would be fine on a 6.0l. Bit small on a stroker.
You can find the 205's and 210 afr's in the classified section all the time. Even bnib for great prices.