hydraulic roller valvetrain for HP street??

Stang_ROTY · 04-26-2001, 10:00 PM

My engine builder made the suggestion to me that we avoid the hydraulic roller camshaft and lifters due to the $$ of them. The car is a 93 Mustang and the 392 I'm building will be EFI equipped with Carb#'s on all parts (well, almost all the parts :-) in hopes of passing emissions with a smog pump. He also commented that the hydraulic roller setup is not worth the money for a daily driven street 392 stroker that won't be seeing 6-7K Rpm's on the street. I will be taking it to the strip occassionaly. He also said the final decision was of course up to me. I already bought the Crane 1.6 Gold Race Roller Rockers....What do you think? Go with the hydraulic roller or something else??

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In progress for Spring:

93 GT less motor and tranny, 8 pt cage, chute,
Sothside Machine bars & Sub-frames, 3.73's
'69 393 stroker Edlebrock Performer heads, Performer RPM Upper & Lower Manifold..Crane Gold 1.6 Rollers..BBK 70MM TB & cats..30lb Injectors..Cartech Fuel System..

84_GT350 · 04-27-2001, 12:36 AM

Personally, that sounds like total crap to me. Roller cams can make more power than a flat tappet due to running much more aggressive lift ramps. Sure, you could run the same specs on a flat tappet cam but the friction between the cam and lifters would wear them both out pretty quick (not to mention having to adjust your valvetrain constantly). If you have some time, compare the Comp Cams Xtreme Energy flat tappet grinds to the roller grinds. More lift and less duration from the roller cams which equals out to better vacuum and throttle response. But like the man said...the final decision is yours.

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1984 1/2 GT350 (#842 Hatchback w/ T-tops), 302HO, Comp cams Xtreme Energy cam, Carter 625cfm carb, Weiand Stealth intake, MSD distributor, MSD coil, FMS 9mm wires, 1 5/8" MAC unequal shorties, 2 1/2" MAC Prochamber H-pipe, Flowmaster 2 chambers, KYBs, 16"x8" 4 lug Cobra Rs, Falken 245/45ZR16s

WADS56 · 04-27-2001, 01:09 AM

another vote for the roller.

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347 W/ A-trim 6#'s, Canfield heads, out of the box Systemax II intake, solid roller cam. 11.1 @123mph

93lx 5.0 daily driver

04-26-2001, 10:00 PM	#1
Stang_ROTY Registered Member Join Date: Feb 2001 Location: Berkshire County - Massachusetts Posts: 735	hydraulic roller valvetrain for HP street?? My engine builder made the suggestion to me that we avoid the hydraulic roller camshaft and lifters due to the $$ of them. The car is a 93 Mustang and the 392 I'm building will be EFI equipped with Carb#'s on all parts (well, almost all the parts :-) in hopes of passing emissions with a smog pump. He also commented that the hydraulic roller setup is not worth the money for a daily driven street 392 stroker that won't be seeing 6-7K Rpm's on the street. I will be taking it to the strip occassionaly. He also said the final decision was of course up to me. I already bought the Crane 1.6 Gold Race Roller Rockers....What do you think? Go with the hydraulic roller or something else?? ------------------ In progress for Spring: 93 GT less motor and tranny, 8 pt cage, chute, Sothside Machine bars & Sub-frames, 3.73's '69 393 stroker Edlebrock Performer heads, Performer RPM Upper & Lower Manifold..Crane Gold 1.6 Rollers..BBK 70MM TB & cats..30lb Injectors..Cartech Fuel System..

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04-27-2001, 12:36 AM	#2
84_GT350 Registered Member Join Date: Apr 1999 Location: Overland Park, KS, USA Posts: 1,631	Personally, that sounds like total crap to me. Roller cams can make more power than a flat tappet due to running much more aggressive lift ramps. Sure, you could run the same specs on a flat tappet cam but the friction between the cam and lifters would wear them both out pretty quick (not to mention having to adjust your valvetrain constantly). If you have some time, compare the Comp Cams Xtreme Energy flat tappet grinds to the roller grinds. More lift and less duration from the roller cams which equals out to better vacuum and throttle response. But like the man said...the final decision is yours. ------------------ 1984 1/2 GT350 (#842 Hatchback w/ T-tops), 302HO, Comp cams Xtreme Energy cam, Carter 625cfm carb, Weiand Stealth intake, MSD distributor, MSD coil, FMS 9mm wires, 1 5/8" MAC unequal shorties, 2 1/2" MAC Prochamber H-pipe, Flowmaster 2 chambers, KYBs, 16"x8" 4 lug Cobra Rs, Falken 245/45ZR16s

04-27-2001, 01:09 AM	#3
WADS56 gear banger Join Date: Aug 2000 Location: CHICAGO Posts: 1,144	another vote for the roller. ------------------ 347 W/ A-trim 6#'s, Canfield heads, out of the box Systemax II intake, solid roller cam. 11.1 @123mph 93lx 5.0 daily driver