My 545 Build Results

545 Build Details:

D9TE block with main girdle, .030 bore
eagle 6.8 h-beam rods
Scat 4.500 Forged crank
Ross forged pistons with 22cc dish and lowered ring pack
Comp XR292 Solid Roller ground on 108 LSA
melling HV oil pump
JPP billet dual roller timing chain and torrington bearing kit
Kaase SCJ-A heads unported
ARP head studs
1.73 roller rockers
Edelbrock victor intake
Holley 1250 Dominator (No carb spacers)
MSD Dist.
Pistons 0.015 down
11.1:1 compression


Results:
All pulls were done to 6500 RPM
Run on 110 / 93 50/50 mix
BBC 2 1/4 headers used.

Best Overall Pull (running a bit lean):
28 Degree timing
684 Hp @ 6000 RPM / 666 Tq @ 5100 RPM


Pulls after Jetting up the carb:
30 Degree timing
677 Hp at 6200 RPM / 666 Tq @ 4900 RPM

28 Degree timing
677 Hp @ 6100 RPM / 653 Tq @ 5100 RPM

32 Degree timing
680 Hp @ 6200 RPM / 659 Tq @ 5000 RPM


I was VERY HAPPY with the results. Should make for a fun street cruiser :). Its going in my 69 Mustang w\ a TKO600 5spd

Thanks to all the people on this board, as I have learned a bunch by reading all your posts.

And thanks to Dave M. for building this piece for me.

Regards,
Jimmy

Link to Pull #1: http://video.google.com/videoplay?docid=890876976007590626&pr=goog-sl

Jimmy,

Very impressive. Will make a VERY impressive street car!

Sounds like its time to buy some stock in a tire company... What brand do you use!!! :D

Cool....put a super sucker spacer on it and see what it does......hails....D

That's a nice engine build. Good job!

That is a nice build! You said the heads weren't Ported? There are some extra horses on down the road! Especailly if they weren't port matched. You are probably trying to keep it under the hood with no carb. spacer too? That can add some Top HP's! Sounds like you'll have a great Summer!

Jimmy, how is the vaccumn for the brakes? did you weld/drill/tap the Victor for a takeoff, need to do mine but a little concerned as to the best method to use. Dave (UK, Cobra rep, :lol: 528ci)

Thanks for the comments guys. All the credit goes to Dave M. for building this monster.

the1969fordguyinky: I wish I was that far along in my build to know tire brand :). Hopefully next year, since this years budget will be for drive line fitment.

533Beachcomber: Yes, heads are out of the box Kaase SCJ's. No carb spacer is indeed for hood clearance. Once I get it installed, I will see if running one is possible with a boss 429 scoop.

daxcobra: Brakes and Trans are manual, so I dont require a vacuum port tap.

Spring break starts this week (old guy back in school), so I'll be in the garage wrenching away on the mustang for the first time in 12 years.

Jimmy

I am in the process of building a 572 stroker that needs to drink 93 octane without pre-detonation. I will be using the Kaase P51 heads and the compression ratio is 11.25:1 on my motor. I know that the cam will determine alot regarding pre-detonation resistance. Any feedback will be appreciated.

Sleepertruck: that much static compression is dangerous on the street unless the cam and cooling is perfect. Do you have to have that much static?? can you use dish pistons ? can you open up the chamers ? My experience says if it is for 93octane (especially now that they keep changing fuel formulas) about 10.5 to 1 is practical limit for street use.

now i know me saying that opens a big can of worms for discussion, probably already covered before on the "Engine Tech" board of this forum, in fact you probably should post your question there and check out the responces


all that said, if you have to run that much compression run a cam with enough split overlap that cranking compression is 175 psi or less and you will stay out of trouble. Comp Cams XR292R-10 comes to mind, but im sure others would work also. best to look at cams with 108-110 lobe sep/angle and probable 255-270 duration @ .50 open

hope it helps


:D

JCRPM10000,
Thanks for your input.

sleepertruck,

I had the same issue when building this motor, choosing the proper compression ratio to live on pump gas.

From all my reading here, it seemed that a creating a tight quench area was very important to keeping detonation away. So we ended up decking the block and putting the pistons .015 down, and ended up with 11.1:1

Have not had a chance to run the motor yet on the street, but on the dyno there were no signs of pinging with the 50/50 mix.

Jimmy

[/quote]I am in the process of building a 572 stroker that needs to drink 93 octane


kida counts out the 50/50 mix

you can live with the 11:+ on the street, but, it usually means retarding the timing and having a cam with horable low-end performance IMO

Thats a nice build. I'm looking at doing something similar. Is there a reason you went with Eagle rods instead of Scat? I'm concidering getting the Scat lightweight forged 545 rotating assembly with flat top pistons.

Nice Results, I hope my 521 with the new P-51's gets that kind of HP / TQ !!

Thats a nice build. I'm looking at doing something similar. Is there a reason you went with Eagle rods instead of Scat? I'm concidering getting the Scat lightweight forged 545 rotating assembly with flat top pistons.

Engine Builder had the crank / rod / piston assembly already available.

Jimmy

Thats a nice build. I'm looking at doing something similar. Is there a reason you went with Eagle rods instead of Scat? I'm concidering getting the Scat lightweight forged 545 rotating assembly with flat top pistons.

Engine Builder had the crank / rod / piston assembly already available.

Jimmy


So it was just a matter of using what was on hand then, and not that one brand was stronger or of better quality than the other. Thanks for the reply.

Mike

bump