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Re: Pump gas friendly race motor [Re: Bigcube] #1093498 10/14/11 08:38 PM 10/14/11 08:38 PM
Joined: Dec 2009 Posts: 1,074 detroit, mi POS Dakota super stock
POS Dakota super stock Joined: Dec 2009 Posts: 1,074 detroit, mi	Quote: Here's what that page spits out for my current compression/cam Quote: Your dynamic compression ratio is 11.21:1 . Your dynamic cranking pressure is 244.55 PSI. So it's safe to assume this WON'T run on pump gas LOL i know a guy a couple miles from me with an iron headed 390 and around 225 psi on pump 93. But 244...likely not.

Re: Pump gas friendly race motor [Re: POS Dakota] #1093499 10/15/11 12:18 AM 10/15/11 12:18 AM
Joined: Oct 2005 Posts: 8,862 Ontario, Canada S Stanton Don't question me!
Stanton Don't question me! S Joined: Oct 2005 Posts: 8,862 Ontario, Canada	Quote: Your dynamic compression ratio is 11.21:1 . Your dynamic cranking pressure is 244.55 PSI. With a dynamic CR of 11.21, I gotta ask ... what's your static CR ????

Re: Pump gas friendly race motor [Re: Stanton] #1093500 10/15/11 08:30 AM 10/15/11 08:30 AM
Joined: Nov 2003 Posts: 10,384 Upstate NY Bigcube OP I Live Here
Bigcube OP I Live Here Joined: Nov 2003 Posts: 10,384 Upstate NY	It's 15:1

Re: Pump gas friendly race motor [Re: Bigcube] #1093501 10/15/11 09:53 AM 10/15/11 09:53 AM
Joined: Jan 2003 Posts: 8,021 Tulsa OK Bad340fish master
Bad340fish master Joined: Jan 2003 Posts: 8,021 Tulsa OK	Quote: It's 15:1 E85 cornfed bigcube dart maybe? 68 Barracuda Formula S 340

Re: Pump gas friendly race motor [Re: Bigcube] #1093502 10/15/11 09:59 AM 10/15/11 09:59 AM
Joined: Jun 2010 Posts: 3,112 LONG ISLAND fishy340 master
fishy340 master Joined: Jun 2010 Posts: 3,112 LONG ISLAND	hey bigcube 11.1 ur fine w sunoco ultra or good 93 octane..mine is 11.5 i run ny garbage gas for the street with little bangin of the throttle here and there- its fine,now when i go to the track i put a gal of 110 or 116 mix with 3 gals of 93 and have no problemos

Re: Pump gas friendly race motor [Re: Bad340fish] #1093503 10/15/11 12:46 PM 10/15/11 12:46 PM
Joined: Nov 2003 Posts: 10,384 Upstate NY Bigcube OP I Live Here
Bigcube OP I Live Here Joined: Nov 2003 Posts: 10,384 Upstate NY	Quote: Quote: It's 15:1 E85 cornfed bigcube dart maybe? If they had it around here I'd consider it. But I really want to tame it down some and drive the car more. I've always ran VP C-16 in it.

Re: Pump gas friendly race motor [Re: Bigcube] #1093504 10/15/11 01:55 PM 10/15/11 01:55 PM
Joined: Feb 2003 Posts: 1,646 Ontario,Canada F firefighter3931 top fuel
firefighter3931 top fuel F Joined: Feb 2003 Posts: 1,646 Ontario,Canada	My PRH 572 is right at 10.75:1 and runs fine on 93UL pump swill. Cam is a 266/272 110lsa Comp Roller. The engine idles nice at 1050rpm and is easy to drive on the street Ron 6872547-572-9.jpg (36 downloads)

Re: Pump gas friendly race motor [Re: firefighter3931] #1093505 10/15/11 03:38 PM 10/15/11 03:38 PM
Joined: Nov 2003 Posts: 10,384 Upstate NY Bigcube OP I Live Here
Bigcube OP I Live Here Joined: Nov 2003 Posts: 10,384 Upstate NY	What heads? Did Dwayne dyno it? It would be a good comparison because mine was run on his dyno.

Re: Pump gas friendly race motor [Re: Bigcube] #1093506 10/15/11 03:45 PM 10/15/11 03:45 PM
Joined: Jan 2003 Posts: 1,365 elmira ny hp340nos pro stock
hp340nos pro stock Joined: Jan 2003 Posts: 1,365 elmira ny	jim i look forward to seeing the car out again.people need to see your car in person,to appreciate the detail you have gone too in the car,beautiful and fast,and you have not cracked the fogger yet,good luck and see you in the spring time mike d. Last edited by hp340nos; 10/15/11 03:47 PM.

Re: Pump gas friendly race motor [Re: Bigcube] #1093507 10/16/11 09:15 AM 10/16/11 09:15 AM
Joined: Feb 2003 Posts: 1,646 Ontario,Canada F firefighter3931 top fuel
firefighter3931 top fuel F Joined: Feb 2003 Posts: 1,646 Ontario,Canada	Quote: What heads? Did Dwayne dyno it? It would be a good comparison because mine was run on his dyno. Jim, the heads are EZ 295's with some massaging by Dwayne Here's a thread on the build with dyno numbers using different manifold/carb combos : https://board.moparts.org/ubbthreads/show...e=0#Post5622009 Ron

Re: Pump gas friendly race motor [Re: Bigcube] #1093508 10/16/11 09:24 AM 10/16/11 09:24 AM
Joined: Feb 2007 Posts: 6,295 U.S. M moparniac master
moparniac master M Joined: Feb 2007 Posts: 6,295 U.S.	Firefighter you ever run that at the track? Mopar Performance

Re: Pump gas friendly race motor [Re: Bigcube] #1093509 10/16/11 09:28 AM 10/16/11 09:28 AM
Joined: Jan 2003 Posts: 8,021 Tulsa OK Bad340fish master
Bad340fish master Joined: Jan 2003 Posts: 8,021 Tulsa OK	Quote: Quote: Quote: It's 15:1 E85 cornfed bigcube dart maybe? If they had it around here I'd consider it. But I really want to tame it down some and drive the car more. I've always ran VP C-16 in it. Its kind of available around here but not everywhere. I have considered sourcing it in a drum if I decide to go that route. Its easier to avoid all those gas station stories about the 383 six pack hemis anyways lol. 68 Barracuda Formula S 340

Re: Pump gas friendly race motor [Re: firefighter3931] #1093510 10/16/11 11:00 AM 10/16/11 11:00 AM
Joined: Nov 2003 Posts: 10,384 Upstate NY Bigcube OP I Live Here
Bigcube OP I Live Here Joined: Nov 2003 Posts: 10,384 Upstate NY	Quote: Quote: What heads? Did Dwayne dyno it? It would be a good comparison because mine was run on his dyno. Jim, the heads are EZ 295's with some massaging by Dwayne Here's a thread on the build with dyno numbers using different manifold/carb combos : https://board.moparts.org/ubbthreads/show...e=0#Post5622009 Ron Very nice, Dwaynes the MAN!

Re: Pump gas friendly race motor [Re: firefighter3931] #1093511 10/16/11 01:33 PM 10/16/11 01:33 PM
Joined: Jan 2004 Posts: 3,837 Central Missouri Fort Leonard... mopar65 master
mopar65 master Joined: Jan 2004 Posts: 3,837 Central Missouri Fort Leonard...	Quote: My PRH 572 is right at 10.75:1 and runs fine on 93UL pump swill. Cam is a 266/272 110lsa Comp Roller. The engine idles nice at 1050rpm and is easy to drive on the street Ron looking great there ron. but i have a question for you.on the mopar 337 intake.did you use it to cover up the valley? i mean did you use it instead of useing the indy valley plate or did the intake bolt on top of the indy plate? sorry for the weared question.but in the pic the 337 intake almost looks like it is bolted on top of the indy valley plate? i might be wanting to try this intake latter on down the road.thanks Mopar65 3520 pound race ready 1973 Street/Strip Dodge Dart - Stock stroke 440/727 10.49 @ 125.0 on 93 pump gas & ET Street Radials. More to come... ( SGT Miller) Proudly served 12 years in the US ARMY RESERVES support our troops

Re: Pump gas friendly race motor [Re: mopar65] #1093512 10/16/11 02:36 PM 10/16/11 02:36 PM
Joined: Jan 2003 Posts: 5,762 Hot Rod Ridge FastmOp master
FastmOp master Joined: Jan 2003 Posts: 5,762 Hot Rod Ridge	If you replace your current headgaskit with something like a thick copper one and gain .080 or so where would your compression be? I'd run as much stuff as I could if I had what you have sitting around. That thing is fresh so I'd really look at doing as little and as cheep as I could. Pistons would be as far as I would go. Then you could spend the cash saved for 110 or E85 I would stick exhaust with electric cut-outs on it. Cause you know "ice cream is better with open headers".

Re: Pump gas friendly race motor [Re: moparniac] #1093513 10/16/11 05:32 PM 10/16/11 05:32 PM
Joined: Feb 2003 Posts: 1,646 Ontario,Canada F firefighter3931 top fuel
firefighter3931 top fuel F Joined: Feb 2003 Posts: 1,646 Ontario,Canada	Quote: Firefighter you ever run that at the track? Yep, been trying to work out all the gremlins ; fuel delivery and the Tq converter been giving me grief ! The car is also real heavy (4200 lbs raceweight) so i'm making some off season changes to lighten things up. Ron

Re: Pump gas friendly race motor [Re: mopar65] #1093514 10/16/11 05:35 PM 10/16/11 05:35 PM
Joined: Feb 2003 Posts: 1,646 Ontario,Canada F firefighter3931 top fuel
firefighter3931 top fuel F Joined: Feb 2003 Posts: 1,646 Ontario,Canada	Quote: looking great there ron. but i have a question for you.on the mopar 337 intake.did you use it to cover up the valley? i mean did you use it instead of useing the indy valley plate or did the intake bolt on top of the indy plate? sorry for the weared question.but in the pic the 337 intake almost looks like it is bolted on top of the indy valley plate? i might be wanting to try this intake latter on down the road.thanks Mopar65 Bobby, with the raised port EZ heads we had to install an Indy valley cover underneath the 337 manifold. Good eye ! Ron

Re: Pump gas friendly race motor [Re: firefighter3931] #1093515 10/16/11 07:47 PM 10/16/11 07:47 PM
Joined: Oct 2011 Posts: 3 texas M moparman63 member
moparman63 member M Joined: Oct 2011 Posts: 3 texas	my 499 low deck is 11.1:1 with 175psi cranking.it lives great on 90 octane.even with 150hp nitrous and 36 degrees timing.i believe camshaft and rpm are where its at.mine has sr head,a torque monster cam and 5700rpm shift point.i dont spray it anymore but i did for the firzt 10 years of its life.

Re: Pump gas friendly race motor [Re: Bigcube] #1093516 10/16/11 11:28 PM 10/16/11 11:28 PM
Joined: Jan 2003 Posts: 14,492 So. Burlington, Vt. F fast68plymouth I Live Here
fast68plymouth I Live Here F Joined: Jan 2003 Posts: 14,492 So. Burlington, Vt.	Jim, some pistons, rods, a cam, and a set of valve springs and you'd be right in pump gas/grocery getter heaven 68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123 Dealer for Comp Cams/Indy Heads

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