help, i need more power. - Aussie V8 | Holden - Ford

jezza372 · 29-08-2008, 07:23 PM

hi i am new to this, i asked this question in the welcome posts. i think that was my problem. anyhow i will try again.
i have a holden 372 cui stroker, b cast heads,edelbrock torquer, cam specs are 228@50 with 525 thou lift. 10:1 comp, 750 vac holley. my engine made 326 rwhp through a 5 spd t5 at 5050 rpm and 464 ft/lb at 4053 rpm at the engine. almost everyone has told me my engine is at its streetable limit, with my current heads and manifold and cam, does anyone know if this is true? i have heard about torque power and strip master manifolds for pre efi heads. maybe yella terra dash 3 heads or vn heads. i need more power. what changes do i make now? thanks jeremy.

3554me · 29-08-2008, 08:46 PM

it sounds like a good engine jezza ,whats your diff ratio and tyre size, is there a spacer under that 750 ,is the cam hyd ?
cheers

jezza372 · 29-08-2008, 08:54 PM

diff is standard lsd 3.08:1, tyres are 245/50/16 (if that helps). no spacer under carby and my cam is a hyd.

3554me · 29-08-2008, 10:03 PM

has anyone ever suggested to change the diff ratio ,

Crunchy_NuT · 29-08-2008, 10:14 PM

definately a ratio change - i haven't looked back since, its almost a cheaters way of going quicker...lol

Jimma · 29-08-2008, 10:45 PM

You don't need more power, you just need to use the power you've got. Motor will need bigger gears than that. What weight is your car?

EDIT: Actually unless the car is full weight, maybe those gears would suffice - but given you've got the 5 speed you may as well go stiffer.

allports · 29-08-2008, 11:50 PM

Gears. Im in tow with the concensus.
As far as it being at streetable limit...phoowee! The cam is tiny for your cubes, you can put a bigger cam in it but you'll need a gear ratio change. A bigger cube engine will swallow cams. A spacer will help with that manifold and cubic inch size. You'll need to tune the plenum size with a 1 or 2" depends what will still fit under unless its got the VL bed pan on the bonnet.

GTR308 · 30-08-2008, 12:31 AM

i agree bigger cam around 236 @050 still very streetable with those cubes and change gears.

allports · 30-08-2008, 12:38 AM

Quote:

Originally Posted by GTR308

i agree bigger cam around 236 @050 still very streetable with those cubes and change gears.

Well bugga... that'll count out the 286 crane getting another victim...dang!

Oldman · 30-08-2008, 12:49 AM

Don't knock the GOOD everyday 286 LOL.By the way sean,if you think death will get ride of me I plan to come back & hunt you all anyway.Haha.

allports · 30-08-2008, 12:58 AM

Knock it offf the bench till it breaks you mean??? Lol. Can't teach an old dog new tricks ay? It only took 11 minutes to get someones back up! Nah seriously Oldman it's a reasonable cam, just that most guys on forums think its the ticket.

GTR308 · 30-08-2008, 12:58 AM

i was just being general about it, i wouldnt use a 286 either. lol

allports · 30-08-2008, 01:06 AM

I just dont use crane. Sorry! A non conformist here.
Like my late mate Frank Zappa said........"Without deviation from the norm, progress is not possible."

jezza372 · 30-08-2008, 09:18 AM

i dont know the exact weight, my car is a vl brock group a. i have thought about going a bit larger in the cam, however i dont know if this will kill torque or just push the torque up higher in the rev range. diff ratio change is probably a good idea, may need some stickier tyres then.
thanks for the replies.

3554me · 30-08-2008, 09:21 AM

it's about 1350/1400 kgs, diff change will help traction i could
just imagine the wheel spin atm

29-08-2008, 07:23 PM	#1 (permalink)
jezza372 Newbie Trade Rating: (0) Join Date: Aug 2008 Location: qld Ride: vl brock Posts: 17	help, i need more power. hi i am new to this, i asked this question in the welcome posts. i think that was my problem. anyhow i will try again. i have a holden 372 cui stroker, b cast heads,edelbrock torquer, cam specs are 228@50 with 525 thou lift. 10:1 comp, 750 vac holley. my engine made 326 rwhp through a 5 spd t5 at 5050 rpm and 464 ft/lb at 4053 rpm at the engine. almost everyone has told me my engine is at its streetable limit, with my current heads and manifold and cam, does anyone know if this is true? i have heard about torque power and strip master manifolds for pre efi heads. maybe yella terra dash 3 heads or vn heads. i need more power. what changes do i make now? thanks jeremy.

29-08-2008, 10:45 PM	#6 (permalink)
Jimma casual poster Trade Rating: (0) Join Date: Nov 2006 Location: Melbourne Ride: VC Posts: 100	You don't need more power, you just need to use the power you've got. Motor will need bigger gears than that. What weight is your car? EDIT: Actually unless the car is full weight, maybe those gears would suffice - but given you've got the 5 speed you may as well go stiffer. Last edited by Jimma; 29-08-2008 at 10:53 PM.

29-08-2008, 11:50 PM	#7 (permalink)
allports Engine scientist Trade Rating: (1) Join Date: Jun 2007 Location: Sydney Ride: Dragster Posts: 3,196	Gears. Im in tow with the concensus. As far as it being at streetable limit...phoowee! The cam is tiny for your cubes, you can put a bigger cam in it but you'll need a gear ratio change. A bigger cube engine will swallow cams. A spacer will help with that manifold and cubic inch size. You'll need to tune the plenum size with a 1 or 2" depends what will still fit under unless its got the VL bed pan on the bonnet. __________________ If you plant a cucumber, you get a cucumber! Two things are infinate,the universe & human stupidity, and Im not sure about the universe. Albert Einstein Without deviation from the norm, progress is not possible. Frank Zappa

30-08-2008, 12:31 AM	#8 (permalink)
GTR308 casual poster Trade Rating: (0) Join Date: Sep 2005 Location: 308 performance centre, perth Ride: .LJ torana, vt comm, EH special. Posts: 253	i agree bigger cam around 236 @050 still very streetable with those cubes and change gears. __________________ 308 performance centre, perth

30-08-2008, 12:49 AM	#10 (permalink)
Oldman Do you ever leave? Trade Rating: (0) Join Date: Jun 2006 Location: Perth Ride: VLCommodore Posts: 2,271	Don't knock the GOOD everyday 286 LOL.By the way sean,if you think death will get ride of me I plan to come back & hunt you all anyway.Haha. Last edited by Oldman; 30-08-2008 at 12:53 AM. Reason: A laugh

29-08-2008, 08:46 PM	#2 (permalink)
3554me casual poster Trade Rating: (3) Join Date: Apr 2008 Location: qld Ride: hz,vn,vk,fb Posts: 385	it sounds like a good engine jezza ,whats your diff ratio and tyre size, is there a spacer under that 750 ,is the cam hyd ? cheers

29-08-2008, 08:54 PM	#3 (permalink)
jezza372 Newbie Trade Rating: (0) Join Date: Aug 2008 Location: qld Ride: vl brock Posts: 17	diff is standard lsd 3.08:1, tyres are 245/50/16 (if that helps). no spacer under carby and my cam is a hyd.

29-08-2008, 10:03 PM	#4 (permalink)
3554me casual poster Trade Rating: (3) Join Date: Apr 2008 Location: qld Ride: hz,vn,vk,fb Posts: 385	has anyone ever suggested to change the diff ratio ,

29-08-2008, 10:14 PM	#5 (permalink)
Crunchy_NuT Dedicated Learner Trade Rating: (0) Join Date: Jul 2008 Location: Portland - Vic Ride: VY SS (500+ HP) & HT Prem (Engineless) Posts: 304	definately a ratio change - i haven't looked back since, its almost a cheaters way of going quicker...lol

30-08-2008, 12:58 AM	#11 (permalink)
allports Engine scientist Trade Rating: (1) Join Date: Jun 2007 Location: Sydney Ride: Dragster Posts: 3,196	Knock it offf the bench till it breaks you mean??? Lol. Can't teach an old dog new tricks ay? It only took 11 minutes to get someones back up! Nah seriously Oldman it's a reasonable cam, just that most guys on forums think its the ticket. __________________ If you plant a cucumber, you get a cucumber! Two things are infinate,the universe & human stupidity, and Im not sure about the universe. Albert Einstein Without deviation from the norm, progress is not possible. Frank Zappa

30-08-2008, 12:58 AM	#12 (permalink)
GTR308 casual poster Trade Rating: (0) Join Date: Sep 2005 Location: 308 performance centre, perth Ride: .LJ torana, vt comm, EH special. Posts: 253	i was just being general about it, i wouldnt use a 286 either. lol __________________ 308 performance centre, perth

30-08-2008, 01:06 AM	#13 (permalink)
allports Engine scientist Trade Rating: (1) Join Date: Jun 2007 Location: Sydney Ride: Dragster Posts: 3,196	I just dont use crane. Sorry! A non conformist here. Like my late mate Frank Zappa said........"Without deviation from the norm, progress is not possible." __________________ If you plant a cucumber, you get a cucumber! Two things are infinate,the universe & human stupidity, and Im not sure about the universe. Albert Einstein Without deviation from the norm, progress is not possible. Frank Zappa

30-08-2008, 09:18 AM	#14 (permalink)
jezza372 Newbie Trade Rating: (0) Join Date: Aug 2008 Location: qld Ride: vl brock Posts: 17	i dont know the exact weight, my car is a vl brock group a. i have thought about going a bit larger in the cam, however i dont know if this will kill torque or just push the torque up higher in the rev range. diff ratio change is probably a good idea, may need some stickier tyres then. thanks for the replies.

30-08-2008, 09:21 AM	#15 (permalink)
3554me casual poster Trade Rating: (3) Join Date: Apr 2008 Location: qld Ride: hz,vn,vk,fb Posts: 385	it's about 1350/1400 kgs, diff change will help traction i could just imagine the wheel spin atm Last edited by 3554me; 30-08-2008 at 09:25 AM.

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