opinions for 402 head choice
opinions for 402 head choice ive decided on a 402 since i got a ls2 block for dirt cheap
car will be a 100% street car with maybe 1-3 track passes a year, im hopeing to make around 525whp
im down to decideing on my pistons cam and heads
i'd like to run a ported fast 92 on it, best place to get a ported one at?
heads i was looking into a set of afr's ive seen the 205's are pretty good on 402's would the 225's be better tho? what non super expensive rocker arms would you recommend
compression ratio? i was thinking 11.5:1 would be 93 pump safe?
now what kind of pistons would you recommend flat tops with valve reliefs ect?
i was also thinking of running a u/d pulley
thanks in advance
car will be a 100% street car with maybe 1-3 track passes a year, im hopeing to make around 525whp
im down to decideing on my pistons cam and heads
i'd like to run a ported fast 92 on it, best place to get a ported one at?
heads i was looking into a set of afr's ive seen the 205's are pretty good on 402's would the 225's be better tho? what non super expensive rocker arms would you recommend
compression ratio? i was thinking 11.5:1 would be 93 pump safe?
now what kind of pistons would you recommend flat tops with valve reliefs ect?
i was also thinking of running a u/d pulley
thanks in advance
i'd like to run a ported fast 92 on it, best place to get a ported one at?
Contact Tony Mamo at AFR.
heads i was looking into a set of afr's ive seen the 205's are pretty good on 402's would the 225's be better tho? what non super expensive rocker arms would you recommend
The 205's have put out great results on 402 motors. I run 225's with additional work by Tony. Whatever brand you go with; don't skimp on cylinder heads. They are the key to making big power on n/a cars.
compression ratio? i was thinking 11.5:1 would be 93 pump safe?
I run 11.8 on pump gas without a problem.
now what kind of pistons would you recommend flat tops with valve reliefs ect? I've used both Wiseco and Diamond pistons (2 cc valve reliefs) with good results. In my case the Wiseco pistons are slightly lighter.
i was also thinking of running a u/d pulley
I run an ASP pulley with no problems.
Contact Tony Mamo at AFR.
heads i was looking into a set of afr's ive seen the 205's are pretty good on 402's would the 225's be better tho? what non super expensive rocker arms would you recommend
The 205's have put out great results on 402 motors. I run 225's with additional work by Tony. Whatever brand you go with; don't skimp on cylinder heads. They are the key to making big power on n/a cars.
compression ratio? i was thinking 11.5:1 would be 93 pump safe?
I run 11.8 on pump gas without a problem.
now what kind of pistons would you recommend flat tops with valve reliefs ect? I've used both Wiseco and Diamond pistons (2 cc valve reliefs) with good results. In my case the Wiseco pistons are slightly lighter.
i was also thinking of running a u/d pulley
I run an ASP pulley with no problems.
We are offering ported FAST 92/with our 92mm billet tb. Ported by Jantzer performance.
I also have AFR's on sale and can come up with a package deal for you for cam heads and intake.
You dont need after market rockers with AFR's, I would just have your stockers rebuilt by Harlan Sharp. The HS mod fixes the only issue with them. I'd go with the 225's over the 205's, the price is close enough anyway and Like I said I have them on sale
I also have AFR's on sale and can come up with a package deal for you for cam heads and intake.
You dont need after market rockers with AFR's, I would just have your stockers rebuilt by Harlan Sharp. The HS mod fixes the only issue with them. I'd go with the 225's over the 205's, the price is close enough anyway and Like I said I have them on sale
TFS 225's or AFR 225s milled to 61 or 59cc's with a tony mamo or Vengeance racing ported fast. And to seal the deal talk with Pat G about your power goals and driveablity and have him spec you a cam based on your combo. Thats me and I'd feel safe at 11.3 but then again I can afford to blow a motor right now. Good luck bro.
cool thanks guys, i was worried about picking the correct piston based on my head and cam for ptv clearences so maybe i should have a sold for sure on a cam and head first right?
some people have had good results with ported AFR 205s on a 402. thats my setup, but i havent got good numbers yet due to a bad trans and a loss of compression. i put down 460/440, but the trans took a big dump shortly after (wouldnt stay locked on the dyno either), and then i found out that all 8 top rings werent sealed. hopefully once i get it running again ill have new, better numbers.
now, if i hadnt bought the ported 205s before, i either would have gotten the 225 AFRs or maybe a set of worked over L92s
now, if i hadnt bought the ported 205s before, i either would have gotten the 225 AFRs or maybe a set of worked over L92s
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Check the dyno section here. There's a sticky with multiple 402-408 builds and results. I would howver suggest you focus on the overall results rather than picking a dyno number target. The later has way too many variables to be really meaningful.
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Verdad Gallardo Fully race prepped New titanium intake valves and slightly used inconel exhaust valves. For 2650 delivered
ready to ship 
id got 225's save some cash and use the stock rockers, nice cam and then he can just get rockers,u/d pulley and a ewp down the road if he chose to and that'd still give him a lil bit to gain.
should be easily over 500whp with a ported fast intake
should be easily over 500whp with a ported fast intake
Quoted from another thread:
Richard @ WCCH also carries them and a bunch of other items. He should be coming out with something new / really nice in the next few months from what I understand.
If you search on Ebay you'll find a guy who sells bare All Pro castings for $700 including guides. They're as cast, but you can have them finished for $150 to have the guides installed and $180-200 for a good valve job. You'll need springs and valves, but you can get valves for $240 and springs for $250. You'll have a 230cc after market casting with a thick deck, solid rocker pad, 1/2 inch pushrod holes, etc... for $1600. That's about the same as you'd be able to get a set of stock ported castings for.
Yes to the intake Jesel's on the rocker. Big rpms requires a stable rocker system. The offset pattern provides just that.
I carry Richards heads
, as well as run them on my personal cars 
Richards is great guy to talk to and very helpful as well give him a call. 
TECH Resident
Joined: Jun 2007
Posts: 952
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if the dollar was at least 1 bit decent i would talk but no good-
thanks for the offer
Thanks
Nick--
Here is a good thread about AFR 205's...https://ls1tech.com/forums/dynamomet...big-power.html
Several more threads with other head result in the dyno section.
Good luck with your build!
Several more threads with other head result in the dyno section.
Good luck with your build!
TECH Resident
Joined: Jun 2007
Posts: 952
Likes: 0
but as always u must check the measurements-
my one got the cut out for the ls1 rocker stands-
we are talking about the allpro head yea?
Thanks
Nick--