i got my car dynoed and only got 261rwhp at 4800 and 332.1tq at 3600 ithought i should be over 300 rwhp heres my combo ive got the compucam 2032 214/220 duration 496 510 lift with 1.65 roller rockers AFR 195cc heads with compition port work msd 6al uinderdrive pulleys ported plenum removed maf screens edelbrock base and runners 1 3/4 long tube headers 4" mufflex system afpr ed wrights fast chip what should i change? cam? what cam u recommend? i want 300+ rwhp i thought i had it im open to any suggestions

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1992 camaro RS w/ 350tpi
195cc AFR heads with compition port work milled to 58cc
1 3/4 hooker long tube headers
4" mufflex system
custom ED Wright chip
eddelbroc intake base and runners and much more
new best ET 13.5 @104.66 on stock heads
no times with new afr heads hoping for 12's on motor
http://www.nav.to/badass355tpi

 

I think more duration in the cam would help and it might be a mis-match between the components and the chip. Get an adjustable timing light and find out what your total advance is. Try adjusting your base advance to compensate for total advance to see if it affects your WOT power. If the dyno has a tailpipe sniffer find out what your Air to Fuel ratio your getting, maybe it's off. I would say you might need a bit more back-pressure to help scavenge the chambers and it might be hurting torque.

 

I think that "compition port work" you had done is really hurting your air flow. LOL

 

ive got 24# injectors id really like to see what i could get out of the ltr set up but if i knew the mini ram or super ram would take care of this i would get one im jus trying to get all the input before i drop anther $1000+ on the street i win races all the time thats what surprised me when i saw the #s i was running 13.5@104.66 last year with stock heads im bafled

 

I think that your setup is unbalanced and the numbers that you got really aren't that bad considering your setup. Let me explain...

Your exhaust and heads are for high-rpm power. Your intake and cam are for low-rpm torque. Just when the AFRs and that exhaust start coming to life the cam and intake are running out of steam. Its a classic mismatch.

Check out Mike Davis' dyno runs and compare them to your setup. That information is located at the bottom of this page...

http://www.eecis.udel.edu/~davis/z28/winter01/dyno/

I would recommend doing 3 things:
1) Install a bigger camshaft
2) Siamese your intake base
3) PROM tuning

Tim

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TRAXION's 1990 IROC-Z
Best Time = 12.244 @ 112.51mph (1.778 60' / 7.819@88.32mph in the 1/8)
All Natural. No Force. No Drugs. Stock Bottom End. Stock Body Panels.
Gunning for NA 11's with bigger cam, bigger stall, and bigger exhaust.
-=ICON Motorsports=-
Moderator: PROM board at thirdgen.org

 

Join the 'not satisfied with horsepower' club, dude. I'm running that same cam in a 383, and the power drops off at 4800 rpm.

Traxion is right about your mismatch. I have the same problem. I really don't agree with him on the cam for you to hit 300 rwhp, but it wouldn't hurt.

There is a post on the corvette forum right now that is very interesting. The formula for determining rough peak horspower from airflow is: HP=cfm*.2527*# of cylinders.

What is interesting about the post is that there is a guy who is looking for 600 HP with a miniram, and cam of around 250 duration at .050. His heads flow 340 cfm, but they had to cut the miniram in half and port it inorder to get 400 cfm out of the intake. It also says that the intake has to flow more air than the heads inorder for the intake to not restrict flow.

If your AFR heads are flowing good air, and your intake is not, then you are choking up your combo. Get that lower fully ported and get a better upper intake or a miniram.

That cam should be good enough for 300 rwhp.

 

I have Hooker long tubes, the same cam as Traxion and am getting AFR heads. The intake is siamesed plenum and runners, 52mm tb, and fully ported Edelbrock base. Will this work OK. What will I need to change. I was going with the 195'2(street) because I may go 383 one day. ANy suggestions or does this sound ok?

Thanks

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1986 305 TPI
8.0 @88 in the 1/8
**Soon to be 355

 

There is no real flow difference between the 190's and 195's. The 195's are port matched to a vis jr intake. Does your eldebrock tpi base line up with the ports in the 195's?? Actually having a 383 I wish I would have bought the afr 210's.

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87z 383,afr 190's, comp hyd roller(242/248-.540/.562,114 sep),Ported and polished mini ram, 30lb inj, 3.42 gears, tremec 5spd, , 1,3/4" slp headers, speed pro bank to bank-wb02.
"Just remember children, no man can beat you once youv'e found the cliterous." 'chef'

 

87z-YA, what are you running with your combo, and have you had it on the dyno?

 

Don't touch it! Your motor is fine, you just need a SC to force feed it! If you over tune the $hit outta it, it isn't going to be driveable much.

Oh, and that 2032 cam is what my buddy has in his almost dead stock 89 305TPI. Go a little bigger.

 

i always herad a cam that size was good for TPI...mine is closer(a little more duration.) how does my combo sound??

 

Ahhh, you've got the same exact problem as I do. I dynoed at 254rwhp/347rwtq. I have the Edelbrock 6085 heads, and ZZ9 cam with .490/.527 lift 213/226 duration @ 0.050 (1.52rr)
I have the BONE stock untouched TPI manifold.
Check out this other thread I started

https://www.thirdgen.org/messgboard/...ML/002552.html

 

might help if you know what car i have hehe


check sig--->

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89' Iroc-Z
ZZ3 short block-355 TPI ZZ9 cam
NOS 150 shot.
blah...blah...blah..
95' T-56, 6-speed
99' Z' rearend w/ 4.10's
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1997 black Trans AM
LT1, A4, basically stock.
13.87 on the G-tech

 

Im Running 12.7's @110 right now with 2.0 60 fts. I still have a small cam in it though. Ill be installing the one in my sig within the next 2 weeks. Then I will have some dyno numbers to print.