Jackson98Z28

I'm looking at doing heads and intake on my car very soon. I've been looking around and want to know if anyone has ran these heads on stock bottom end ls1? I will be using a FAST 102/ 102 setup and my cam is .621 intake .621 exhaust 239/247@ .050 on a 110. Can I run these heads with a 65cc chamber? It is a 6 speed car with 4.30 gears in a moser 9 inch. Thanks for any advice.

Jackson98Z28

Also has Katech rodbolts

NAVYBLUE210

AFR 210 a better fit with that bore size unless you plan larger down the road.
AFR does make 230 for small bore though.
Ported LS2 TB with power ring on FAST 102 much easier to tune for
Most tuners, and less expensive than NW 102 TB and again for stock
Cubes will flow as much air as you need to ~ 550 rwhp/7000rpm
Just my .02

A.R. Shale Targa

iTrader: (2)

Most likely will need to fly cut with that size camshaft and larger than stock valve diameter. Definitely a stout combo but as others have stated, a 210 would make more mid range torque on a stock cube.

Jackson98Z28

This is what my tuner is recommending and he is one of the best I know in my area. I will be cutting the pistons. I just wanted more assurance from anyone that has had or has a similar setup. I know there's a lot of you that have a ton of experience with these motors and this will be the first for me doing heads and intake changes. I've had cam/bolton ls1s. I've also been looking at the PRC LS6 CNC heads and the mid lift number are so much better on the AFRs. I want to get the best performing head I can with the money I have to spend. I do plan on a 400+ci bottom end down the rd, but for now the stocker is gonna have to carry the load

Rise of the Phoenix

iTrader: (27)

Too big for the bore size.

high impact

iTrader: (5)

AFR makes a small bore 230 head, if those are the heads you found I wouldn't be afraid of them at all. Just plan on launching at 6k with a good clutch. That would be a stout combo if you cranked the compression up

dr_whigham

iTrader: (49)

I was told by my cam guru (not hard to figure out) that if I ever did go back with AFR's to go with the 230's.

I think you'll be happy. But as stated previously, definitely get that compression up.

Jackson98Z28

I am planning to bump the compression up to 11:1. I do have 150 shot on the car. Would that be enough compression?

high impact

iTrader: (5)

I think you would want at least 11.0:1 static. Find a dynamic calculator and figure out the dynamic compression to help decide where static and quench should be. Personally I would want to see higher static compression with that cam and head combo.

Jackson98Z28

How does your car run with the trickflow 215s High Impact? Looks like a good setup

high impact

iTrader: (5)

They are still sitting on the work bench. I am currently running my lightly ported 241's. Decided to wait to bolt the TF heads on until I boost but still want to finish this season off running nitrous. Still dialing suspension, so far 10.60 on a 150 shot, there's a lot more left in it

Jackson98Z28

Sounds good man. I would love to know how it would run with the TFS heads on it now

high impact

iTrader: (5)

I would too. LOL I am boosting it this winter and have been so torn about tearing it down twice and retuning all over. I think the trick flows would wake it up a large margin. I have a build thread https://ls1tech.com/forums/nitrous-o...ous-build.html

I almost bought a pair of small bore AFR heads before I bought the trick flows

Tony Mamo @ AFR

iTrader: (13)

Your building an RPM machine....a combo that will want to be spun pretty hard.

That means a few things but first off you will want to run around 11.75 static with that much cam.....you wont have any issues on pump gas if someone wants to calculate the DCR but I dont need to.....I know it will work and in some respects is required or it will be very lazy on the bottom.

Go with the big bore head even though its a small bore engine (the valves are more unshrouded and flow alot more in the lower/middle part of the curve)....you want our 1610 head milled to 57 ish cc's to cover the volume lost from the flycuts.

Budget permitting you should consider having me Mamofy those heads for even more flow and efficiency and while I'm in there installing much lighter hollow stem intake valves.....you need to be concerned with valve weight and the proper valvetrain set-up cause this engine is going to want to spin 7300 or so if you build it properly....it will blast thru 7K like your tach is broken if this goes together right and you have the recipe correct. Even without my involvement on the porting side you still need to consider spending the money on the lighter intake valves.....91 grams vs 120 grams is a huge weight savings and you get an X-squared type of benefit in valve control from the lighter weight components.

I would run a limited travel lifter and a stouter 11/32 custom pushrod.....stock rockers or better yet the Yella Terra Ultralites.....I sell a "Pro" version of that rocker set with 10mm stands and bolts.....super stout....super rigid.....more rigid stands means more valve action and more valve action means more net power.

Bottom line....this isn't a slap it together build and you make good power just because you order a larger higher flowing head. You have to build a proper combination because the higher flowing larger head on a small engine means it wont do much downstairs and it will only work upstairs if you set up the recipe properly.....if you don't do that your left with a combination that wont work exceptionally well anywhere.....not the desired end result.

Consider enlisting my help and having me build/spec the entire package....it wont be cheap but it will run like a scalded dog and you can be the envy of all your friends.....LOL



Seriously....if you need some help sourcing the right components no matter what the extent of my involvement is just shoot me a PM.....if your lucky enough to have a few bucks put away and you want to swing for the fences on this build I'm the right guy to help you get there. Proper planning is key and you cant omit any of the critical components. The package is only as good as its weakest link....in fact this is a common theme I see often as I look over various builds and their results. I suspect at some point the budget runs low and short cuts are taken and these folks always scratch their heads wondering why the Godzilla power they were hoping to build only turns out to be a pissed off house reptile.....the devil is in the details and you have to be fully committed, especially for a build like this where RPM and valve control become so important to the end results.

-Tony

Jackson98Z28

First of all Tony, thank you for posting. I've already planned on running the yella terra ultralight rockers. Can u PM me a price on the heads if u do what u are talking abt. I do have a budget, but would love to see what you come up with.

Tony Mamo @ AFR

iTrader: (13)

They arent the "Pro" versions....its a unique kit I have an exclusive with YT on that features 10mm stands and bolts (versus 8mm stock stuff).....you have to machine the heads (drill and tap the rocker studs larger) which I have a CNC program written for as well although that can be handled by any competent machinist on a Bridgeport or similar type machine....you dont need a CNC.

I will shoot you a PM later tonight when my day starts winding down



Cheers,
Tony

98blueSScamaro

iTrader: (14)

Tony about valve weight? And rockers. I am not running Afr heads but yet ETP 215. I pulled the stock valves 130 grams intake and had rev make me a set of valves. End weight came to 60 grams. Dropped a good amount. I want this 347 to spin for days. Can I get close to 8k with stock shimmed rockers that the swip is spot on or no? I am still up in the air on the cam as it will also be a n20 motor and be at 12.5.1 comp. tell me what you think

Robert

Tony Mamo @ AFR

iTrader: (13)

Robert,

First off the only way 60 grams is even possible is if you went titanium and even that is a stretch (but doable with that small a diameter valve)....I will assume that to be the case. I would run some high quality limited travel lifters and stout pushrods....but the biggest problem I see is the manifold.....even a properly ported FAST wont be effective at that RPM.....the runner is too long. I would be more realistic and target 7500......if you really wanted to see 8K you should have went with larger heads in the first place and ideally a solid roller and a stout single plane top mounted TB set-up (not the elbows which always compromise output).

Lightening the intake valve like you did was clutch (not to mention mandatory)....pay attention to the exhaust though.....I bet its 100 grams or more.....you can get hollow steel valves that are high 70's and low 80's.

Good luck with the build....I usually keep a few sets of the lifters you need in stock btw....PM me if your interested

-Tony

98blueSScamaro

iTrader: (14)

Thank you as always and sorry for the hijack.

I Left out a bit of detail. 347 has a super Vic with a 4500 t/b. intake and exhaust valves are titanium. Heads have chamber and port. Work by A.e.s the valves are super light. No joke I was shocked as well. What brand are the lifters you speak of? I picked this heads because of the deck and the fact if need be it can be opened up to a 245. So if I need more head I just send them out. I dunno if they where a good pick or not yet. But do you think I can run stock rockers? I only ask because of how light they are.