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Forum: Pontiac - Street 09-18-2012, 07:53 PM
Replies: 52
Views: 1,737
Posted By radback
Thanks for the advice, I'll check that.

Thanks for the advice, I'll check that.
Forum: Pontiac - Street 09-18-2012, 10:30 AM
Replies: 52
Views: 1,737
Posted By radback
It's been a long time since my last post here,...

It's been a long time since my last post here, and I haven't changed anything on my engine during this time :)

Well, I think now I'll have to change a least the rods anyway:...
Forum: Pontiac - Street 11-23-2009, 03:31 PM
Replies: 52
Views: 1,737
Posted By radback
I'm aware of this, thanks :D

I'm aware of this, thanks :D
Forum: Pontiac - Street 11-23-2009, 10:24 AM
Replies: 52
Views: 1,737
Posted By radback
I was thinking of lifting the engine the maximum...

I was thinking of lifting the engine the maximum possible, but even if I can remove the rod caps from under, it will be a real pita to refit them and rebolt at correct torque.
Not ready to face this...
Forum: Pontiac - Street 11-19-2009, 03:36 AM
Replies: 52
Views: 1,737
Posted By radback
Already done: I've got the Mallory HEI module,...

Already done: I've got the Mallory HEI module, set at 5000rpm. :)


Done too: Headers with a pair of cherry Bombs. Not perfect, but I think it's all right.
Forum: Suspension TECH 11-18-2009, 08:25 PM
Replies: 21
Views: 769
Posted By radback
check here: ...

check here:
http://www.nastyz28.com/forum/showthread.php?t=94303&highlight=blazer
Forum: Pontiac - Street 11-18-2009, 08:17 PM
Replies: 52
Views: 1,737
Posted By radback
I'm still tempted by the heads swap now. Easy...

I'm still tempted by the heads swap now.
Easy to do, and even if I don't exploit them at full potential right now, it can't hurt.

But do better heads will hurt badly the MPG?
Actually I'm around...
Forum: Pontiac - Street 11-18-2009, 01:26 AM
Replies: 52
Views: 1,737
Posted By radback
Geno, I would like to work on my engine (I have...

Geno, I would like to work on my engine (I have built engine before), but again, problem is I've NO PLACE to do it, and I'm a little affraid of swaping rod with engine in car will be a nightmare.

...
Forum: Pontiac - Street 11-16-2009, 10:31 PM
Replies: 52
Views: 1,737
Posted By radback
OK Sounds too complicate for me and...

OK



Sounds too complicate for me and more expensive than have the work done by a shop.
(garage rent are killer here in Paris!)

Is this really that hard to perform rod/cam/heads swap while...
Forum: Pontiac - Street 11-16-2009, 09:31 PM
Replies: 52
Views: 1,737
Posted By radback
Yes, that's what I though. I intend to...

Yes, that's what I though.



I intend to do to the work myself, but as I said, I don't have a place to pull off the engine from the car (I had built flat4 engines in my kitchen before, but I...
Forum: Pontiac - Street 11-16-2009, 07:20 PM
Replies: 52
Views: 1,737
Posted By radback
This exactly what I don't want to do, and that...

This exactly what I don't want to do, and that why I think it's not a good idea to change the cam only.
Because the day I'll put the new heads, the cam won't be the optimum one.

Now, if any guy...
Forum: Pontiac - Street 11-16-2009, 07:02 PM
Replies: 9
Views: 381
Posted By radback
680 grams only??? Strange, I saw the Tomahawk...

680 grams only???
Strange, I saw the Tomahawk ultra lite I-beam listed at 738 grams...

PS: when you say "from Ace" what shop are you talking about?
Thanks
Forum: Pontiac - Street 11-12-2009, 03:36 PM
Replies: 52
Views: 1,737
Posted By radback
For me, stock rods are a no go if the engine will...

For me, stock rods are a no go if the engine will see more than 5000rpm (I don't want to take the risk even if it's a small one), and with a cam swap, I don't want to swap the cam now, then have to...
Forum: Pontiac - Street 11-12-2009, 01:54 PM
Replies: 9
Views: 381
Posted By radback
Yes the engine was blanced, but unfortunately I...

Yes the engine was blanced, but unfortunately I don't have any card.
what kind of forged rods are close enough in weight from stock rods, so a shop would be able to make them the same weight?
Forum: Pontiac - Street 11-12-2009, 12:34 PM
Replies: 52
Views: 1,737
Posted By radback
Yes, huge gain with a single plane; you mean the...

Yes, huge gain with a single plane; you mean the program is very optimistic with this part?

I was thinking changing to a Performer RPM.
Forum: Pontiac - Street 11-12-2009, 12:20 PM
Replies: 52
Views: 1,737
Posted By radback
I want to keep dual plane manifold and my...

I want to keep dual plane manifold and my Rochester for MPG issue.
The car is more street than strip.

Yes I know the sim prog doesn't give accurate figures, but I've heard they're pretty good in...
Forum: Pontiac - Street 11-12-2009, 12:15 PM
Replies: 9
Views: 381
Posted By radback
Rods change: balance question

Hi,

If I change the stock rods on my balanced engine, for a set of forged ones,
do I need to rebalance the crank, or could I just fit new rods (balanced together) on existing crank ?
Some says...
Forum: Pontiac - Street 11-12-2009, 12:09 PM
Replies: 52
Views: 1,737
Posted By radback
Dynosim shows a gain of +30hp with those cams,...

Dynosim shows a gain of +30hp with those cams, not bad.
Forum: Pontiac - Street 11-12-2009, 12:08 PM
Replies: 52
Views: 1,737
Posted By radback
I've got a 3.42 with 29" rear tires.

I've got a 3.42 with 29" rear tires.
Forum: Pontiac - Street 11-11-2009, 10:10 PM
Replies: 52
Views: 1,737
Posted By radback
How much did it change? Yes, stage 1:...

How much did it change?



Yes, stage 1: new heads
and the day I will have a place to work; Stage 2: new rods and cam.

About changing rods: anyone know if I need to rebalance the crank, or...
Forum: Pontiac - Street 11-10-2009, 12:51 PM
Replies: 52
Views: 1,737
Posted By radback
Putting a new cam will move the power higher, and...

Putting a new cam will move the power higher, and I'm not confident with stock rods after 5000rpm.

I don't have place to work on the car, so I can't take off the engine from the car.
It's...
Forum: Pontiac - Street 11-09-2009, 07:03 PM
Replies: 52
Views: 1,737
Posted By radback
If I change cam, I will have to change rods. ...

If I change cam, I will have to change rods.
Maybe next time...
Forum: Pontiac - Street 11-09-2009, 06:27 PM
Replies: 52
Views: 1,737
Posted By radback
Upgrading a 428 (440)

Hi,

In my 79 T/A, I've got a 428 bored to 440 engine nearly new (10 000 miles), with 068 cam, 62 heads, headers, Performer Intake, stock rods and crank, TRW pistons,
and I want to upgrade it...
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