Do you think my World Torquer heads are holding me back? I currently am looking in to a set of 190 AFR heads, how much of a difference will I see? Has anyone seen a difference on their own cars w/AFR heads?

COMPRESSION:……………….….9.6:1
HEADS:……………………………WORLD TORQUER 76cc 1.60/2.02 VALVES
CAMSHAFT:………………………COMP X-ENERGY 227/236 @ .050, .514/.524 LIFT, 112 LSA
PUSHRODS:…………………….….STOCK
ROCKER ARMS:…………………..COMP 1.5 ROLLER TIP
PISTONS:…………………………..SPEED PRO HYPEREUTECTIC DOME TOP
CRANKSHAFT:……………………STOCK
RODS:………………………………STOCK
THROTTLE BODY:………………..52mm TPIS
INTAKE:……………………………HOLLEY STEALTH RAM WITH RAM AIR INDUCTION
FUEL INJECTORS:………………...24 lb./hr. ACCEL
FUEL PUMP:……………………….GRANETELLI 255 lb./hr
IGNITION:………………………….STOCK/MSD COIL
WATER PUMP……………………..MEZIERE ELECTRIC
ENGINE MANAGEMENT:………...ADS CHIP
EXHAUST SYSTEM:………………1-5/8” EDELBROCK SHORT TUBE HEADERS/FLOWMASTER
TRANSMISSION:…………………..BOWTIE OVERDRIVES 700R4 STREET/STRIP
TORQUE CONVERTER:…………...TCS 2600
REAR END:………………………….3:73 BORG WARNER
BEST ET/MPH………………………12.8/103 mph
BEST 60 FT………………………….1.74

 

Any particular reason you went with the large chambers?

Have the heads been ported any?

 

How did you get 9.6:1 compression with a 355 and 76cc heads?

Torquers suck.

 

Well you could get 9.6:1 CR IF he had domed pistons...but of course he said he had stock pistons.
I would say yes your heads are holding you back as well as your low compression.
Also, Ive never seen that grand on a comp cams xtreme energy...i know of 224/230 and 230/236...but not 227/236.
Of course i could be wrong.
The AFRs would be a nice upgrade.
Oh yeah, toss that ADS chip in the trash.

 

Ah, I see he has Speed-Pro dome pistons.

 

Mis-read that also...
Damn this work is getting in the way of my posts

 

Out of the box, yes.

 

But still just as good and a better buy than 99% of factory castings.IMO,these are the 2nd best buy on the market,for a mild performance engine,2nd to the vortecs.
But I challenge anyone to suggest a better pair of heads in that price range,and don't say vortec,because by the time you do the machine work,and buy an intake,you've left the price range of the S/R in the dust.

 

LT1 heads.

 

The reason I chose such a large chamber, is becasue they are .125 dome top pistons. I was trying to keep the compression ratio from getting to high. I've heard good and bad thigs about the heads, but mostly bad. And no The heads haven't been ported, I took them out the box and bolted it on.

 

The cam is a custom grind from Delta Camshafts, it used to be 224/230, but I wanted a little more lift and duration to go with the HSR intake.

 

Get your current heads ported and tune it, should be much faster then.

 

And a custom chip by you or someone by you who can do many burns, re-burns, and more re-burns...