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Author Topic: weiand 174 on a 302  (Read 37819 times)
65futura
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« on: March 07, 2011, 10:46:20 pm »

hello all, i have a 302 with dart pro 1 195 heads, jay cam, about 9.4 to 1 comp ratio with speedpro forged pistons. i am contemplating a weiand 174 roots style supercharger for some more low end torque and seat of the pants fun.  im a little nervous about the compression ratio. can i pull this off with out detonation  and 6 psi boost or what ?   thx in advance for your input. Mike
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69 Merc
The Ricer King
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« Reply #1 on: March 08, 2011, 10:44:48 am »

hello all, i have a 302 with dart pro 1 195 heads, jay cam, about 9.4 to 1 comp ratio with speedpro forged pistons. i am contemplating a weiand 174 roots style supercharger for some more low end torque and seat of the pants fun.  im a little nervous about the compression ratio. can i pull this off with out detonation  and 6 psi boost or what ?   thx in advance for your input. Mike


Is this a street car?

The reason I'm asking this is because on street tires the last thing that you want is more supercharged "low end torque".  I do understand what you are wanting to accomplish it's just the "more low end torque" wording.

I'm just trying to correct anyone who talks about "low end torque" to get the ride moving on street tires.  Too much low end torque and your ride won't be moving -- it will be smoking your back tires.

You'd much rather have more mid to top-end power for a ride that is driven with street tires.
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Robert's 1969 Mercury Montego (FordStrokers 408W, QFT 850cfm RQ-AN, Super Victor, 1" aluminum open spacer, CamMotion HR .624"/.609" 251*/256* 108* LSA, 1-3/4"x3-1/2" headers, Dynomax Ultra #17224 mufflers, C6/4R100 trans, 8"/9" 5500 converter, Broader Performance manual V/B, 9" 4.56 Detroit Truetrac, Hoosier Pro Street 31x12.5R15 on 10" rims)

The Merc started here = http://sbftech.com/index.php/topic,27178.0.html  Now = http://sbftech.com/index.php/topic,34648.0.html

Thanks to Jim "Woody" and Nicole Woods @ FordStrokers 408W, Westminster Performance Transmission (W.P.T.) transmissions, TCS Performance converters, Broader Performance valvebodies and last but not least a BIG thanks (always) to my friends here and abroad in the World!
69 Merc
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« Reply #2 on: March 08, 2011, 10:48:11 am »

What about a methanol drip system?

I've never used it but it might be worthwhile to look into.
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Robert's 1969 Mercury Montego (FordStrokers 408W, QFT 850cfm RQ-AN, Super Victor, 1" aluminum open spacer, CamMotion HR .624"/.609" 251*/256* 108* LSA, 1-3/4"x3-1/2" headers, Dynomax Ultra #17224 mufflers, C6/4R100 trans, 8"/9" 5500 converter, Broader Performance manual V/B, 9" 4.56 Detroit Truetrac, Hoosier Pro Street 31x12.5R15 on 10" rims)

The Merc started here = http://sbftech.com/index.php/topic,27178.0.html  Now = http://sbftech.com/index.php/topic,34648.0.html

Thanks to Jim "Woody" and Nicole Woods @ FordStrokers 408W, Westminster Performance Transmission (W.P.T.) transmissions, TCS Performance converters, Broader Performance valvebodies and last but not least a BIG thanks (always) to my friends here and abroad in the World!
quick26
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« Reply #3 on: March 08, 2011, 11:01:32 am »

i would think it all depends on the tune. 
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mighty mouse
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« Reply #4 on: March 08, 2011, 11:28:38 am »

hello all, i have a 302 with dart pro 1 195 heads, jay cam, about 9.4 to 1 comp ratio with speedpro forged pistons. i am contemplating a weiand 174 roots style supercharger for some more low end torque and seat of the pants fun.  im a little nervous about the compression ratio. can i pull this off with out detonation  and 6 psi boost or what ?   thx in advance for your input. Mike

Get a BTM controller.  Be generous with the timing pull per boost poundage.  Run good gas - with ethanol whenever possible if you can find it. 

It will have a lot to do with the cam timing though.  So be overly cautious to begin with and work from there...
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1986 Mustang GT Convertible
Suspension and Differential by Team Z Motorsports
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I'd rather be a fool who is loyal to his friends than a POS that jumps ship to save face. We were wrong in the end, but nobody can ever call us disloyal. I can live with that.
gator
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« Reply #5 on: March 09, 2011, 04:52:47 am »

i used to have a 174 but never used it, i did a little research,  from what ive read they run pretty hot the higher you spin them compared to a kenney bell or similar.  If your only after 6-8psi i dont think that would be a problem at all, but since your engine/heads flow better than a stock 302, you will probably have to pulley the blower to see the 6psi.   
All good info already posted, watch timing, btm good idea, i think a meth kit is a good idea also to cool the charge and keep detnation away.   

I still have a holley 750 blower carb, thats built for these lil blowers if youre intrested, i bought it new from holley reman, and never used it.
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90lx, stock short block, stock cam, TFS 170's, 1.72rr, 70mm Turbo, 11psi boost, on stock tune-SOLD it
Current 95 gt stock short block, custom cam, TFS170's, xcelerator intake, Holley sniper efi, t5, 3.55 gear
woodywagon
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« Reply #6 on: March 09, 2011, 10:36:34 am »

Hey running one for the last few years with some pretty good luck let me know what your looking for an sure i can help or at least get you in the right direction


* 3850093374_66812020a8 engine.jpg (135.65 KB, 500x375 - viewed 9476 times.)
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injection is nice but would rather be blown
woodywagon
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« Reply #7 on: March 09, 2011, 10:37:38 am »

lol lots of low end


* n829790566_4856735_8688 woodyburout single.jpg (43.65 KB, 604x404 - viewed 940 times.)
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injection is nice but would rather be blown
ochohill
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« Reply #8 on: March 09, 2011, 05:04:09 pm »

Nice sleeper. What's the cleavis to the head for? Or do I already know?
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woodywagon
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« Reply #9 on: March 09, 2011, 05:14:01 pm »

Torque strap helps a lot
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injection is nice but would rather be blown
woodywagon
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« Reply #10 on: March 09, 2011, 05:16:32 pm »

Runs not bad 12.1 at 116 mph on street 70 14 bfs
did a 11.7 at 118 on liitle 26 tall 8,5 MT  slicks
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injection is nice but would rather be blown
302esky
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« Reply #11 on: March 12, 2011, 09:12:57 am »

ics titan copper head gasket that does not need o ring heads or block and come with 40, 50 ,60 ,70 ,80,thou  thick head gaskets and you can use them and the msd boost timing master and i use a snow performance water/methonal injection just to be safe than sorry 
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331 stroked, blown, fuel injected, methanol injected ford windsor
65futura
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« Reply #12 on: March 27, 2011, 02:11:04 am »

Hey running one for the last few years with some pretty good luck let me know what your looking for an sure i can help or at least get you in the right direction


looks like you had to ditch the fan shroud. what did you do with your fan set up ?
thx Mike
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woodywagon
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« Reply #13 on: March 27, 2011, 09:53:49 am »

No room for a fan so running a electric 16 inch as a pusher fan i works but when its real hot out its still hell going to a wider alum rad this year hope it helps lol
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injection is nice but would rather be blown
grslms51
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« Reply #14 on: March 27, 2011, 10:49:07 am »

woodywagon..can i ask a few questions....i really like the idea of a little street blower and have the same engine bay as you...do you run a timing controller or just set the timing back?....what head gasket and compression do you have?..i have MLS gaskets and 9.2-9.5 compression(depends on what calculator i use)..how much trouble was it to tune the carb?..i run a 650DP jetted up..is that to small?....does the kit come with a long center crank bolt for the botton blower pulley?...will a stock tfi dizzy fit?..it looks kind of tight ....also,how much more fuel did you use with the blower cruising around?...i drive 100-150 miles on a big cruise weekend...sorry for so many guestion,but i want to make sure before i pull the $3000 trigger at summit...i also have to fab a bigger radiator..i already have an engine fan and full shroud,plus a 16" pusher fan for 85-95* days and a griffin rad...they just don't hold a lot of coolant......thanks for any info,Rusty
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