Dp351zcar Posted December 26, 2005 Share Posted December 26, 2005 I searched and could not satisfy my self (am I sick thinking that and looking there) that my question was answered there. I am building a 351. Intake is a Victor JR The heads are canfield 192's with 2.02 valves that have a curve that flows very close to AFR's CNC 194(?). Compression is 10.5/1 Cam is starting off at a Comp Cams XE284 flat tappet. The trans will be a T5 for as long as it lasts. The car is a 71 240 I am hopping for 425hp as a starting point and it will be used on the street with open track days as a goal. The "street" will be used to get to the track. What I am toying with is a Fidanza 13lb aluminum flywheel 157 tooth that takes a 10.5" clutch Or A Ford Motorsports 25lb 157 tooth that takes a 11" clutch. Both are SFI rated and the clutch will add about 13lbs. Decisions, Decisions Thanks Don Quote Link to comment Share on other sites More sharing options...
Dallas J Posted December 26, 2005 Share Posted December 26, 2005 A new theory in my DSM circle is that the aluminum flywheels seem to dissipate heat faster than the stock steel one, giving us some longer life using a clutch not known for its life span. Anyways, I really like my Fidanza flywheel. -Dallas J Quote Link to comment Share on other sites More sharing options...
blueovalz Posted December 26, 2005 Share Posted December 26, 2005 I've got a 157 tooth aluminum flywheel, but it is on a 289 and it's a Mcloed flywheel. I love it though, and would not ever replace it with a steel. I suppose the biggest advantage is the quicker reduction in engine speed for shifting when I let off the gas for the next shift. It allows for a fairly quick shift. Quote Link to comment Share on other sites More sharing options...
tannji Posted December 27, 2005 Share Posted December 27, 2005 I used an aluminum flywheel on my L28 back in the 80's.... cost me a pretty penny back then, but if you ignored gas mileage, it was a lot of fun and made a great combo with the Centerforce clutch, peppy engine, and 411 gears I had. I pulled the tranny after something like 30,000 miles and everything was in pretty good shape, considering. I really beat on that car, but you couldnt tell by looking. The only thing that I remember being an issue was I had to relearn my shifts with that combo, between the stiff clutch, and the revs falling almost as fast as a motorcycle does, it just about made you into a speed shifter. Quote Link to comment Share on other sites More sharing options...
Michael Posted December 27, 2005 Share Posted December 27, 2005 Might there be a third option - for example Hays or Ram - which give the advantages of an aluminum flywheel, but at a lower price and with the 11" clutch? Quote Link to comment Share on other sites More sharing options...
Dp351zcar Posted December 27, 2005 Author Share Posted December 27, 2005 I found that I could get the Findanza 157t flywheels for $285 on ebay and the other ones (Hays and Ram) were close to $400 everywhere I looked and 164 teeth for and 11". Fidanza is a name I have heard, and have heard they make good products unlike the $200 noname ones on ebay. The Ford motorsport one is about $235 at summit and I am leaning towards it as it's 25lb one as it is an 11" which I can find more clutchs for. I just don't know, I know I'm making this harder than it is. Don Quote Link to comment Share on other sites More sharing options...
80LS1T Posted December 27, 2005 Share Posted December 27, 2005 I had a Fidanzda alluminum flywheel for a while but after swtiching form my factory counterbalanced steel flywheel to the alluminum none counter balanced flywheel I soon realized that it through the balance off of the whole rotating assembly. What ever you do make sure you balance the flywheel to the engines rotating assembly. I learned the hard way. I had to pull the tranny right back out after figureing out what I did. I am going back with the steel factory flywheel. By the way this was for a 95 LT1/T56 combo. Guy Quote Link to comment Share on other sites More sharing options...
Dp351zcar Posted December 28, 2005 Author Share Posted December 28, 2005 Thanks guys. I bought the Fidanza 13.5lb flywheel because the Ford motorsport one turned out to be a zero blance one and I couldn't use it. The 351 has a massive crank assembly and the Romac balancer isn't a light weight either so I think I'll have enough mass to rotate the engine. Now I just need to decide on a clutch. I think I will go with a centerforce duel friction unit or do you think it's overkill? Don Quote Link to comment Share on other sites More sharing options...
80LS1T Posted December 28, 2005 Share Posted December 28, 2005 (cough)CFDF sucks!(cough). I had one and all it did was chatter and turn my flywheel into a big hotspot basically. Not a big fan of them personally. Guy Quote Link to comment Share on other sites More sharing options...
Dp351zcar Posted December 29, 2005 Author Share Posted December 29, 2005 Opps, I should have edited the post about the CF/DF after I searched for centerforce here on hybridz. Thank you guys. I called summit and talked to one of their techs and he said as long as I don't run slicks than the FoMoCo king cobra or the Ram premiumHD set would be fine. Or the would be as strong as the tranny so I guess that's ok or at least a start. I got the Ram, so I guess I will use it as starting base and go from there. This whole car has been more of a challange than I thought it would be, with work, wife and kids and all, but it's getting there. Don Quote Link to comment Share on other sites More sharing options...
AdrianZ Posted December 29, 2005 Share Posted December 29, 2005 I used an aluminum flywheel on my L28 back in the 80's.... cost me a pretty penny back then, but if you ignored gas mileage, it was a lot of fun and made a great combo with the Centerforce clutch, peppy engine, and 411 gears I had. I pulled the tranny after something like 30,000 miles and everything was in pretty good shape, considering. I really beat on that car, but you couldnt tell by looking. The only thing that I remember being an issue was I had to relearn my shifts with that combo, between the stiff clutch, and the revs falling almost as fast as a motorcycle does, it just about made you into a speed shifter. that's when youl earn to get on the gas a little before letting out the clutch Quote Link to comment Share on other sites More sharing options...
BrandonsZ Posted January 24, 2006 Share Posted January 24, 2006 (cough)CFDF sucks!(cough). I had one and all it did was chatter and turn my flywheel into a big hotspot basically. Not a big fan of them personally. Guy I have this clutch set and it's fine, I have a massive steel flywheel and the RPM drops about what I would have expected based on my experiance with other cars. I did however once get a clutchset that chattered like a B***** it turned out that the "rebuilt" clutch they sold me was bad and I got another one free, that one was just a stock clutch, so maybe you just got a raw deal on the one you had. Quote Link to comment Share on other sites More sharing options...
nazar Posted January 28, 2006 Share Posted January 28, 2006 i ordered a spec billet steel flywheel, i dont like aluminum because it warps very easily Billet steel flywheels are still much lighter then stock, not as light as aluminum, good middle ground and stronger Quote Link to comment Share on other sites More sharing options...
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