I've finally settled on some cylinder heads for my H/C/I build planned next Summer and want to make sure the combo I'm putting together looks ideal for the most part. My budget is around $7k which these parts with me doing the labor and is pretty much maxed out. Let me know of any modifications that will net me better results that aren't unreasonable. Car is a 2002 Trans Am, M6 (t56), 90k miles, stock 10 bolt 3.42 ratio, BFG Street Comp 2 tires < 100 miles, BMR SFCs, BMR front and rear sway bars, Hurst shifter. This is a 100% street driven car, no track time for now and not my daily driver. I've put maybe 500 miles on it in 2.5 years lol and a lot more time into on research than anything else. My tuner is doing a street tune and not a dyno tune so I won't know the numbers, so any projections would be nice for me to use as an estimate just to have an idea.

A.I. 226cc 243s @ 60cc chambers with BTR .660s calculated to 11.5:1 scr
Summit HDR 11/32 .120 wall pushrods
WS6store .045 head gaskets or stock .051 if dcr is an issue

Cam? I found a thread where Phil at AI states a 230/238 at .605 lift is the max to run on 60cc ported heads without PTV issues. So looks like I might be flycutting to go bigger to reduce DCR unless that cam will work with .051 head gaskets. I don't know the max dcr I can run on 91 or 93 pump gas without issues. Edit: Through more research found out that I should be calculating DCR using IVC at 006 not 050, so that should help a lot with running a smaller cam I believe.

Summit rocker arm set with trunion (SUM-141556)
Arp Head bolts
LS2 timing chain
Melling M295 standard pressure/standard volumne oil pump (Do I need to upgrade to the 10295 or 10296?)
Morel 6504 drop ins
FIC resized stock ls1 injectors to 42#
FAST 92/WARR 92
FTP 98mm lid + 4" pipe to TB
SD Tune
SE 1 7/8 Long tubes
FM Merge
3.5" or 4" electric cutout off FM merge
SLP LM1 with PowerFlo conversion (running this setup vs true duals to hopefully keep it quieter with the cutout closed)
25% ud pulley
Monster Stage 2 kit (18 lb flywheel, pilot, slave, bolts) with Tick Master Cylinder and remote speed bleeder

 

With the cam you mentioned, I think 450+ RWHP is very achievable. I made 425 RWHP with my inferior AI 806 heads (10.5:1 SCR) and a 228/232 cam, ported Fast92 thru a ford 9". One thing to add if possible would be a crank scraper.

 

That would be nice, although I am going to try to get away with a smaller cam if I can to retain street manners. I don't know that I want to tear as far down into the block as needed to install a scraper. Don't the main caps have to come off for that?

 

Summit stage 1 ghost cam is whatcha want. In my opinion

 

Over the stage 2? Still crazy the number you hit with the ghost cam. I guess compression was similar with your build iirc.

 

With a $7k budget, I would probably be thinking of a procharger and keeping the street manners...but if you want a h/c/I car, I would talk to Phil and let him grind you a cam that will work well with his heads and your goals.

 

I put the stage 2 in and it got slower

 

I wish but doubt I can piece a d1sc together with long tubes and new clutch for 7k. I would talk to Phil but he is not easy as most know to get a response from via email only.

 

Why do you think that was? That seems to go against conventional wisdom that 230+ degree cams are the way to go.

 

91 octane ~11,2:1, 93 octane ~11.5:1, or you can add .3-.5:1 on either with a good octane boost/additive each tank.
Quench is your good friend .035-.040 is ideal, using a .040 head gasket is a good plan to start with.
Great performance with Street Manners, easier tuning and a 3.625" stroke.
The Cam Motion LS1/2 Titan 4 which is 227*/232* 113* + 3* is the sweet spot that will give you
the MOST in ALL categories IMO.
I would expect ~ 450 RWHP on a accurate Dyno Jet and great driving manners with a GOOD Tune.
My .02
Good Luck

 

The Titan IV is the cam I wanted to run so as long as I am good compression wise I will go for it with a .040 gasket. This post helps a lot so thanks.

 

Couldn't tell you . Velocity of the heads vs the cam size maybe.?

 

Better average power maybe?

People always want to talk about peak power numbers. higher peak numbers do not always = faster

 

My build is similar to what you are looking for. Check my signature. With the comments of quench and .040 gaskets i figured my results would be worth sharing.

 

Do you know the chamber volume of your ai 243s? Im most likely going to be running a smaller cam than you, probably 227/232 or smaller even, but would like to see if you were able to clear your cam with similar material taken off although I doubt you are at 60cc.
edit: just saw your thread and yours are at 63.5 minimum. I will read up on the rest of the thread. Looks like that cam would have been nice but surely I will run into p2v issues at that size.

 

Mavn or summit or anyone that may know more about DCR, am I overthinking dynamic compression numbers? I know some don't care or pay attention to that value and some swear by it so a little confused. I know NAVYBLUE was talking about the Titan IV and being fine to run that cam on 11.5:1 or slightly higher, but I may want to run the ghost cam after reading mavns build thread again and possibly wanting to keep cam chop away and also not have to worry about p2v clearance while making good power. If I am at 11.5:1 compression, and with a smaller cam like the ghost cam, shouldnt that cause issues with detonation or will keeping the quench in the .33-.38 range eliminate that worry? Would an SSRA help out more with higher DCR due to small cam and higher scr?

 

I think the ghost cam would work great for you. Mavn has proven it can make excellent power.

You will need to calculate your dcr. I like the wallace racing calculators myself. I think you will end up around 8.75-1 at a guess but don't have all the information to calculate accurately. Should be ok with 93 and competent tuning.

Based on the measuring I've done on my setup I'm confident ptv clearance will be fine even with the significant amount of milling done to your heads and a thinner than stock head gasket. The first place you are likely to run into ptv problems is the IVO with the Stg 2 kind of cams you were considering. Most have the icl @ 111 or lower netting an IVO several degrees btdc. The ghost cam's IVO is 4* atdc due to the shorter duration and 115 cl.

The ssra, will help to draw in cooler air which should help prevent detonation.

 

Thanks for the info. I tried the same calculator but I am too new to finding valve events to input like the abdc closing and all that so I know I made an error. I think that cam will be great too. Especially for retaining the best street manners it should haul ***. I've never had a aftermarket cammed car and always thought I wanted the chop that comes with them, but I am now reconsidering. I believe I can still get a small amount of chop from the ghost cam through tuning which may be nice, just don't care for anything extreme any more. Either way, I need to get learned up on valve events.

 

This chart helped me to initially understand valve events.

There is a lot of great info on this forum, lots of reading to do. Pay attention to the experts here. I'm sure you recognize who they are.

 

That does help to understand a little more so thanks for posting it. Yeah, I hear you, I've learned so much on here in the past couple years and have seen the posting patterns and have determined who knows their ****.