[Stoneage_Caddy]

Seeing as how the promotion will take effect at work in 3 weeks were looking at more money coming in ...

Seeing as how ive got valvetrain noise and 145 k on the engine , i think its time to remove it ...and go with something more ....Appropritate

So ....In 3 weeks ill start with buying a complete early 90s 4.5 Allante engine .....Stripping it of its heads , manifolds and other bits , then promptly unloaiding the engine block to someone who might need it ....finsishing the allante stuff will be farming out the port and polish work , its been 11 years since i last ported and polised , and that was aluminum heads for 8v VWs ...id rather have someone do it.....possibly also extrude honing the intake manifold

Then , procureing the best of the 4.9s (what year would that be 94 or 95?) and rebuilding it what will become my long block .....Im after the last of the 4.9s for the engine block revisions and for the bottom end and oil pump ...then installing the service main bearing and all that jazz ....

Then , procureing the .30 over sleeves and a set of pistons for it , going for a stock 4.9 compression ratio ...

so any other ideas ? ive firmly decided not to go turbo ....

what were the best Cams for these ? would it be prudent to use a allante cam ? were there any diffrences ?

and bring me back up to speed on roller rockers , seems like they were useing 5.0 mustang stuff , and modifying them ...

any sugestions ?

 

[Night Wolf]

Talk to Capt. Fiero.

the Delta cams seems to be nice.

after you do all that, contact Ed Wright at Fast Chips and have him make you a custom chip.

then a nice free flowing exhaust.

Damn, and I was hoping my car would be faster then yours....

 

[Stoneage_Caddy]

prolly still will be , yours weighs so much less .....mine will just look faster

 

[Night Wolf]

my fastest 1/4 time was 15.9, but I havn't been able to replicate that, she is a solid 16.1 though.

Since this is not my go-fast car (hello 500 powered '79) I really have no need to make it go fast.... I'll just do some tricks as things wear out...

like when the muffler needs to be replaced, I'll get a nice after market one... Edelbrock #5519 with some fake, hidden (factory style) dual exhaust.

my trans.... shifts and works fine...when in the course of a year, had more then its share of grime and dust and even a couple small metal pieces on the magnet... 108k I don't believe the trans is going... but if it does... I think the best thing I can do is order a GM reman... except for the same price I have the option of 2.98 gears instead of the 2.73... so I'll get those... if the computer freaks out, in goes a computer from a Touring Sedan or similar.

At the same time the engine has to come out for the trans, I am thinking about doing a refresh job on the engine, bearings, rings etc... she'll have 150k+, and at that time I would swap in a Delta Cams...cam, that Capt. Fiero told me about

the enigne will keep looking stock, meaning no crazy intake or anything, then I would top it off with a Fast Chips computer chip tuned for my car after all the work.

I have the 19.4lbs Ford injectors in... that made a good deal of a difference, and I just the other day got rid of the Bosch +4... 18k miles on them, burning real nice, I put in AC Delco double platinums.... in hope to regain my fuel mileage... but I can't tell yet.

Nearly all the sensors are new, the TPS was just replaced too, but I don't think it is adjusted correctly, I remeber you told me once how to adjust it.... could you refresh of on that?

 

[Ralph]

How much HP would you like to see out of it??

I wonder what lower mileage stock cars like mine run for timeslips? It's certainly true that with engine wear the engine may not have the same gusto, and I sure noticed this with the '80 Pontiac. The engine was never worked on and we've had it since new. It used to be very strong out of the hole, but in more recent years much less powerful....

So where are you getting the engine from? The dealership..

 

[Stoneage_Caddy]

nope , found a few sources , ive got 3 i have my eyes on , if ones left in 3 weeks itll be the one ...

im shoting for 250hp .....prolly a bit agressive of a estimate but i think its possible

 

[Night Wolf]

I heard a 1993 DeVille should run a 16.4 1/4

I managed to better that by .5 seconds, with 1/2 tune up on a car with 90k miles (at the time)

so either I have a freak... or these cars are fast.

 

[Stoneage_Caddy]

for your tps im not sure , becuse youve got a difrent display , i went into pcm data and used that refernce and made it match the values int he shop manual

 

[Capt Fiero]

I keep talking about the Delta Cam people.

Price is $130 American and is worth +20-30 hp on a stock 4.9 couple that with a good exhaust and Fast Chips chip 250hp should be easy without even popping off the heads.

Delta's site

There is a core charge as they want your old cam back. But I can't remember how much that was.

 

[N0DIH]

Talk to Comp Cams too, they also do regrinds of rare or cams with no blanks out there. Melling is likely the factory cam grinder. You might talk to them (Nashville, TN I think) and see if they have blanks that were never ground and see if they are for sale.

I keep talking about the Delta Cam people.

Price is $130 American and is worth +20-30 hp on a stock 4.9 couple that with a good exhaust and Fast Chips chip 250hp should be easy without even popping off the heads.

Delta's site

There is a core charge as they want your old cam back. But I can't remember how much that was.

 

[Capt Fiero]

Hey Nodih I think I am following you around the forum. LOL.

If you could get a cam blank that would be cool, however you would still need to find a grind that works well on a 4.9. As far as I know the only people to have done any research on the 4.9 cams is Delta, if there are other people out there, I would love to hear about it.

For those that don't know.

The difference between a cam ground from a blank and the cam from a re-grind is the blank will have a larger base circle and a smoother ramp angle. (how they increase a cams lift during re-grind is remove matériel from the underside of the ramp. This makes the ramp angle quite aggressive. It is not a huge issue with the roller cams, but none the less it is still an issue.

 

[N0DIH]

Yup! Fun eh??

Another issue with reduced base circles is the lifter goes lower in the bore, and an agressive ramp can casue lifter bore breakage or lifter damage. Delta's price is good, I don't know if Comp has even glanced at the 4.9L. If they have been studying what makes power on the 4.9L, that is a big +.

Hey Nodih I think I am following you around the forum. LOL.

If you could get a cam blank that would be cool, however you would still need to find a grind that works well on a 4.9. As far as I know the only people to have done any research on the 4.9 cams is Delta, if there are other people out there, I would love to hear about it.

For those that don't know.

The difference between a cam ground from a blank and the cam from a re-grind is the blank will have a larger base circle and a smoother ramp angle. (how they increase a cams lift during re-grind is remove matériel from the underside of the ramp. This makes the ramp angle quite aggressive. It is not a huge issue with the roller cams, but none the less it is still an issue.

 

[Capt Fiero]

Delta worked with 3 or 4 Cadero guys and came up with 2 grinds, one that is a "drop in" stock lifters, and springs. The 2nd is a race only or really high performance that requires the heads be pulled, and springs be changed and pirches be ground. As the cam is over .500 lift and will cause spring bind. I had heard some experimenting with the newer beehive springs, but no firm data on it. I believe the drop in has a lift of .480 which was the maximum safe lift before coming close to issues. The lift and duration was optimized for the stock head flow which to my knowledge was benched to get the flow data.

 

[Night Wolf]

Question for Mike.....

why is it the "5.0 PFI" project... these engines were already PFI...

just kinda sounds weird

I gotta say, if I ever have to pull the transmission for a rebuild, which means the engine has to come out too, that Delta cam is getting slapped in there.