Wishmaster

well I got the HSR....should be here friday. then I need to get a set of heads...giong for the AFR 195's..right now I have the Edelbrock performer RPM's, not enough air flow from what Ive heard....Im trying to get over 400 rwhp out this thing...

Wishmaster

well I ended up getting the stealthram and it will be here this week...Now I got get a set of heads...I alreay talked to comp and they figured a custom grind for me that will make power from 1800 to 6400 according to them..

YenkoST

230/236 cam should be close to 400rwhp+ with AFR's new 195 Elimator heads flowing 300cfm.

Tuning it will be the important thing.

Also, what cam did they recommend you?

Wishmaster

Im trying to get over 400 on both ends....the cam they suggested was a custom small base circle grind at 218/224-544/548@50 113 lobe....installed at TDC..said that he would have already added the 2* of advance in it...

I told him that I had the AFR 195's and going with the HSR..and that I wanted my lowend back that the HSR would take away...said that it should make about 410 or more to the wheels..

true?

I now have the edelbrock performer rpm's...and they just wont cut it...I ned to sell those and get some new heads...thinking about either the AFR's or trickflow's or protoplines....those are cheaper than the AFR's..and flow just as good..Ive read.

YenkoST

hmmm....I don't think that cam will cut 410 rwhp....I would expect about 360rwhp max. I was told by Comp to go with a 224/230 on mine but went one size lower for mpg.

Wishmaster

well crap then!....maybe I will call again tomorrow and see what another tech says...why would he tell me that it would make that power and then not?
I want to do the cam 1 time!...and I want all the power I can get..the engine is on a stand and it will be some much easier to work on.

here what I know about the engine..
eagle forged 6" rods
35lbs. injectors
10.1 cr...KB .30 over silv-o-lite flat top pistons.
58mm BBK TB
comp promags full RR 1.52's
comp roller lifters
comp push rods

I bought it already built for some one else....dont know much more about it.

91Z-28

Go bigger on the cam, don't worry about the HSR killing your "lowend" because it won't.

YenkoST

Yea.....if its not a daily driver then go like 230/236 but if you want some more mpg....go 224/230. Both cams are streetable but you will definately need a custom tune anyways.

Wishmaster

and what about the lift? keep it at where its at? with those cams you suggested will that give me above 400 in hp/tq?

It will be a daily driver when its not raining...when you say "give me more mpg" how bad will the mpg suffer?..will those cams have a big lope?

91Z-28

Go with something like the comp 280XFI 230/236 .576/.570 113 LSA. If gas mileage is a big concern then step down to a 224/230ish cam like YenkoST said. A 230/236 cam will definitely have good lope, but a 224/230 cam would be no slouch.

Wishmaster

OK...but will that give me well over 400hp and TQ with a good set of heads?

what kind of mileage are we talking about? I mean will it be that bad? like a freaking 4x4 truck bad?..lol!

I thought with a big cam like that and being so lopey, that you suffer and lose lowend?..

YenkoST

Well...in my truck now......I get 12-13 mpg and about 19-21 mpg on the highway depending on speed and how good I am.

In a car, it will be better b/c you are lighter than I am(takes less throttle and less drag) and you have better aerodynamics. So you can afford to go bigger. AFR did a dyno with a 230/236 cam .510/.520 lift and made 510hp. Now, add there new 300cfm heads(195cc Eliminator heads) to the mix and you have about ~525 hp at the flywheel. The 224/230 cam will make about ~490fwhp with the new heads. And try and keep a 112+ LSA for better idle and drivibility characteristics.

Rottluver

Just curious and NOT AT ALL trying to be a jerk here, but why the fascination with the magical 400 rwhp number? Trust me when I tell you, dyno numbers mean squat when it comes to driving or racing the car......my car dynos at 360 rwhp and 370 rwtq yet I can't get it out of the mid-low 13's.........but I know guys running 330ish rwhp in the same year car that are in the high 12's. (Yes I know a lot of that is driver skill, but even some good drivers have had difficulty making my car move it's fat *** any better)

Dyno numbers are great to look at at BS about and all but they mean nothing if the combo isn't right.........for example, I have 3" true dual exhaust and stock intake, stock cam, heads, etc. All that great exhaust is going to waste because I didn't plan things out very well. I could DEFINATELY use a cam to take advantage of all that open free flowing exhaust........same with heads.

My suggestion is to get on the phone with some reliable and trustworthy engine builders (for the specific type of engine you want to build) and let them knnow what your actual goals are......if all you want is a dyno queen (again, no offense intended) then fine, but if you are looking for specific performance/driveablity/use goals, then I would go the route of talking with the experts.........I personally could not care less if my car made 350 or 400 rwhp as long as it starts going down the track a helluva lot faster. And yes I know, the more hp the faster it "should" go, but a complete and correct setup will accomplish what you want much better then "I want 400+ rwhp/rwtq". Just my $.02 dude.

Wishmaster

LOL..I feel your pain!...not really a magical number but I just want the most I can get out of the motor and then I'll worry about putting it to the ground...in my IROC with just the 305 I pulled a 14.1 and that was all motor and ofcourse my suspension mods and TQ converter...but my car hooks pretty good..I pulled a 1.70 60'..and alls I had was 225HP and about 295Q.
Street racing is nothing like 1/4 mile racing...so with more power...the people around ehre wont know what hit them..they all know my car so I just want to mess with them.

When I sprayed it with a 100shot I was staying right with LS1's andf they couldnt believe it!..I would hit at about a 15 roll and light the tires up and still stay with them.

SO I just want some HP and TQ to play with.

89TramsAmGTA

I'm going for the same goal with a very similiar cam. The Comp XFI218 cam. I'm using the 200cc Dart Pro One heads. Since you already have the components the bigger cams will lower your dynamic compression ratio. The valve events are important.

DynoSim has me at 515HP at 6000rpm. I'm doing all the engine horsepower tricks such as knife edging the crank for the extra 3 or 4 horsepower here and there. Even bought an 18" degree wheel to make sure the timing and valve events are dead nuts. Have pushrod checker in hand and ready to spend some time getting the pushrod length just right.

By the way I tried larger cams in DynoSim and they made more power after 5500rpm but were lacking below that. I will be shifting no later than 6200rpm so I have more power under the curve with the 218 cam. Good luck in your goal.