Chevy Small Block Part 11 - Comp Cams

Chevy Small Block Part 11 Hydraulic Roller

Comp's new hydraulic roller cam is so secret; this is all we could show. They told us that it would be available soon as part of the new Xtreme Energy EFI line-up, see Test 21 for specs.

Comp's new hydraulic roller cam is so secret; this is all we could show. They told us that

Over 75 pulls later, we made the most power using the least amount of fuel (low BSFC number) ever. Sometimes a low BSFC just means you're running on the ragged edge of lean, but we checked the spark plugs very carefully and the dyno's knock sensor never even whispered. Some of this month's extra peak power could also be at least partially attributed to a new proprietary hydraulic roller cam from COMP Cams that we installed. Although it did give up some low-end torque compared to the other cams we've tried, 483 peak horsepower from an 8.5:1 compression, 355-cid small-block is very fierce.

8th Series Of Dyno Tests
Unless listed, no other changes were made for any test.

Danger Mouse specs for Part 11:

355 cid, 8.5:1 cr, 4.030 bore, 3.48 stroke, 5.7-inch rods

Test 21: TFS aluminum heads (Summit Racing PN TFS-30400013-CNC, 72cc chambers, 195cc runners, 2.02/1.60 valves), Edelbrock Victor EFI manifold (PN 29785), Comp Cams Xtreme Energy EFI prototype hydraulic roller camshaft (281/288 adv dur, 230/236 dur at .050, .544/.555 lift w/1.6 rockers, 113 LS) straight up. Comp Cams 1.6:1 Pro Magnum roller rockers, Speed Demon 750 carb, 36 degrees total advance.

Test 22: Installed F.A.S.T. EFI system with Accufab throttle body and 30-lb/hr injectors at 50 psi

Edelbrock made this new EFI manifold based on its popular Victor E-series intake. You can see the corks we plugged into the EFI bosses for the first series of carbureted tests here.

Edelbrock made this new EFI manifold based on its popular Victor E-series intake. You can

Test 23: Switched to 36-lb/hr injectors at 50 psi.

	Test 21		Test 22		Test 23
RPM	TQ	HP	TQ	HP	TQ	HP
2600	352	174	364	180	355	176
2800	350	187	362	193	352	188
3000	357	204	369	211	361	206
3200	379	231	383	233	380	231
3400	389	252	387	251	383	248
3600	385	264	385	264	382	262
3800	385	278	381	276	278	274
4000	384	292	379	289	380	290
4200	387	309	388	310	390	312
4400	406	340	408	342	396	332
4600	424	372	421	369	415	363
4800	428	392	427	391	424	387
5000	429	408	426	405	423	402
5200	430*	426	426	422	419	415
5400	421	433	431*	444	420	432
5600	424	452	423	451	426	455
5800	420	464	420	464	426	470
6000	413	471	420	480*	420	480
Max	430	474	431	480	427	483
Avg	397	330	400	332	396	329
* = peak

We're always looking for new ideas. Do you have a better one for Danger Mouse? Send your test suggestions to:

Super Chevy Magazine
Attn: Danger Mouse
720 Hundley Way
Placentia, CA 92870
Email: mike.petralia@primedia.com

The same 750 Speed Demon that Danger Mouse has worn many times before was used for the baseline carb testing.
The same 750 Speed Demon that Danger Mouse has worn many times before was used for the bas
Hidden inside this little box are the brains that control all the fuel and spark once the F.A.S.T. EFI system is installed.
Hidden inside this little box are the brains that control all the fuel and spark once the
Accufab supplied this trick 1,200-plus-cfm billet throttle body (PN 4BTBOBK) for Danger Mouse to breath through.
Accufab supplied this trick 1,200-plus-cfm billet throttle body (PN 4BTBOBK) for Danger Mo