estimated horsepower with these mods
Thread Starter
Intermediate
Joined: Apr 2010
Posts: 30
Likes: 0
estimated horsepower with these mods
Im changing the cam from a very very mild one to the G5X3 and was wondering roughly what it should put down . Its a FRC car here is a list of mods.
Mods:
-AFR Aluminum 205cc Mongoose Heads
-LG G5x3
-Comp Cam Magnum 5/16” Hardened Pushrods 7.400”
-Comp Cam Replacement Roller Lifters
-ATI Super Damper Aluminum 10% under w/ AC
-Ported FAST 92mm Intake Manifold
-LS2 90mm TB-Z06 85m MAF
-Callaway Honker Cold Air Intake w/ K&N Filter
-42LB Lucas Fuel Injectors
-Katech C5 Ported LS1 Oil Pump
-Katech HD Timing Chain
-Katech Solid Tensioner for C5/Z06
-LG Motorsports Pro 1 ¾ Headers with 3” X-pipe
-Borla Stinger Exhaust Duel Outlet
Mods:
-AFR Aluminum 205cc Mongoose Heads
-LG G5x3
-Comp Cam Magnum 5/16” Hardened Pushrods 7.400”
-Comp Cam Replacement Roller Lifters
-ATI Super Damper Aluminum 10% under w/ AC
-Ported FAST 92mm Intake Manifold
-LS2 90mm TB-Z06 85m MAF
-Callaway Honker Cold Air Intake w/ K&N Filter
-42LB Lucas Fuel Injectors
-Katech C5 Ported LS1 Oil Pump
-Katech HD Timing Chain
-Katech Solid Tensioner for C5/Z06
-LG Motorsports Pro 1 ¾ Headers with 3” X-pipe
-Borla Stinger Exhaust Duel Outlet
Race Director
Joined: Sep 2005
Posts: 11,060
Likes: 291
From: Pasco WA
Stock chamber size for AFRs is 66cc, I think, so your compression should be around 10.5:1. If you live where they sell 93 oct. there's some power left on the table. The cam difference will probably be around 15-20+ RWHP, but your power peak will be higher, and narrower. The X3 is used alot, but I think it's better for drag racing than street or road racing.
Melting Slicks
Joined: Jun 2005
Posts: 2,396
Likes: 52
From: Sicamous BC
I will go with zeevette on all of his comments.
With a slightly bigger cam (not the X3) that would still retain drive-ability & additional head work, milling & some porting work. Depends on your definition of street ability.
My previous 346 with 228/228 was touching 500 rwhp with very nice street manners, my current 416 with 243/247 is not nice.
Who is your tuner?
With a slightly bigger cam (not the X3) that would still retain drive-ability & additional head work, milling & some porting work. Depends on your definition of street ability.
My previous 346 with 228/228 was touching 500 rwhp with very nice street manners, my current 416 with 243/247 is not nice.
Who is your tuner?
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Melting Slicks
Joined: Jun 2005
Posts: 2,396
Likes: 52
From: Sicamous BC
How bout something like this, I'm assuming 6spd.
4:10's with tires that will hold, trans brace (so you don't bust it), a real clutch, not LS7, something like RPS twin. Sends your heads to Tony. A bit more camshaft, make sure the rest of the valve train is up to task. Then you will have a freely reeving 7K rpm motor that hits hard with manners!
Oh & a 3" cat-back.
4:10's with tires that will hold, trans brace (so you don't bust it), a real clutch, not LS7, something like RPS twin. Sends your heads to Tony. A bit more camshaft, make sure the rest of the valve train is up to task. Then you will have a freely reeving 7K rpm motor that hits hard with manners!
Oh & a 3" cat-back.
Thread Starter
Intermediate
Joined: Apr 2010
Posts: 30
Likes: 0
How bout something like this, I'm assuming 6spd.
4:10's with tires that will hold, trans brace (so you don't bust it), a real clutch, not LS7, something like RPS twin. Sends your heads to Tony. A bit more camshaft, make sure the rest of the valve train is up to task. Then you will have a freely reeving 7K rpm motor that hits hard with manners!
Oh & a 3" cat-back.
4:10's with tires that will hold, trans brace (so you don't bust it), a real clutch, not LS7, something like RPS twin. Sends your heads to Tony. A bit more camshaft, make sure the rest of the valve train is up to task. Then you will have a freely reeving 7K rpm motor that hits hard with manners!
Oh & a 3" cat-back.
It is DTE braced and has a twin disc from kentucky clutch. What size cam should I go with ?
Melting Slicks
Joined: Jun 2005
Posts: 2,396
Likes: 52
From: Sicamous BC
If you were to have Tony re work the heads I would discuss the cam with him. Mine was 228/228 that was touching the 500 rwhp.
There is thread over on LS1 tech were someone went a bit more cam than I did....I will try & find it.
There is thread over on LS1 tech were someone went a bit more cam than I did....I will try & find it.
Melting Slicks
Joined: Jun 2005
Posts: 2,396
Likes: 52
From: Sicamous BC
Race Director
Joined: Sep 2005
Posts: 11,060
Likes: 291
From: Pasco WA
If you have AFR heads, theres nobody better than Tony Mamo. Also get cam advice from him. He used to post quite often, but I haven't seen one for a while. He sells/works for AFR, and although he's prone to advise AFR, properly done, they're capable of great results. And they're far better made than factory heads.
