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1957 Chevy 9" swap HP Loss?
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<blockquote data-quote="swampratt" data-source="post: 2912738" data-attributes="member: 15054"><p>I care less what it looks like.</p><p>This is a built to drive and hunt and fish transportation.</p><p>I tried a marine intake Qjet cast iron and then an aluminum Performer rpm intake..The RPM intake was worth 30HP</p><p>I then ported a car Qjet iron intake and it made 10HP less than the RPM intake..Great numbers in my book.</p><p></p><p>I had another cam in this engine Same lobes but ground on a 106LSA.. same intake closing point as the current grind on a 112 LSA.</p><p>It makes a lot of TQ down low for what it is.. Usable power It has 225 PSI cranking pressure,, very early closing intake lobe <img src="/images/smilies/smile.png" class="smilie" loading="lazy" alt=":)" title="Smile :)" data-shortname=":)" /></p><p></p><p>This shortblock is from a 1969 station wagen was a 300HP 350.</p><p>I have had it in 3 different cars.. I have ran 601 casting heads 186 and 041 heads on this with 268H ,270H. 280H, and a herbert old solid flat tappet grind 235-245@ .050"</p><p></p><p>Oil restrictors were used in it for the solid cam .</p><p><em> I t had 100,000 miles on it when i got it (Freshened it ) and in 2 years in the 90s i put 75,000 miles on it .Then it sat and got freshened again and installed in my 47 dodge truck and went about 35,000 miles a year for 6 years and I busted the transmission.</em></p><p><em></em></p><p><em>I have had it in the 57 for a little over a year and about 10,000 miles on it.</em></p><p><em>Crank has never been turned and block never bored.</em></p><p><em>I was getting 18 MPG with the 3.36 gears.</em></p><p> <em>Lot's of miles on this sucker.. lot's of things have been tried ..strip dominator intakes and tunnel-ram intakes.</em></p><p><em>Fastest this block has went was 176MPH in 3/4 of a mile in my 78 Nova with 3.70 gears and a TH 350 with 30" Hoosiers.</em></p><p><em>If you want the math I was cruising at 7600 rpm in high gear with those Hoosiers and the 3.70 gears. I shifted past 7800 rpm from first to second and second to third.</em></p><p><em></em></p><p><em>At 7800 I quit looking at the tachometer.. column shifter was stuck and I was trying to shift at 7600.. seen 7800 and still stuck and pulling up .. finally shifted!!</em></p><p><em>Buddy hit 8500 rpm 2 times with it and I did not let him drive it any more.</em></p><p><em>It is loose everywhere.. if it was tight it would have probably came apart.</em></p><p><em>I hit 6500 RPM in third with 29.5" tires on MoBoost dyno with 3.25 gears in my 47 dodge truck.. That was 167 MPH </em></p><p><em>He cringed and said all pulls will now be in second gear for that thing.</em></p><p><em></em></p><p><em></em></p><p><em></em></p></blockquote><p></p>
[QUOTE="swampratt, post: 2912738, member: 15054"] I care less what it looks like. This is a built to drive and hunt and fish transportation. I tried a marine intake Qjet cast iron and then an aluminum Performer rpm intake..The RPM intake was worth 30HP I then ported a car Qjet iron intake and it made 10HP less than the RPM intake..Great numbers in my book. I had another cam in this engine Same lobes but ground on a 106LSA.. same intake closing point as the current grind on a 112 LSA. It makes a lot of TQ down low for what it is.. Usable power It has 225 PSI cranking pressure,, very early closing intake lobe :) This shortblock is from a 1969 station wagen was a 300HP 350. I have had it in 3 different cars.. I have ran 601 casting heads 186 and 041 heads on this with 268H ,270H. 280H, and a herbert old solid flat tappet grind 235-245@ .050" Oil restrictors were used in it for the solid cam . [I] I t had 100,000 miles on it when i got it (Freshened it ) and in 2 years in the 90s i put 75,000 miles on it .Then it sat and got freshened again and installed in my 47 dodge truck and went about 35,000 miles a year for 6 years and I busted the transmission. I have had it in the 57 for a little over a year and about 10,000 miles on it. Crank has never been turned and block never bored. I was getting 18 MPG with the 3.36 gears. Lot's of miles on this sucker.. lot's of things have been tried ..strip dominator intakes and tunnel-ram intakes. Fastest this block has went was 176MPH in 3/4 of a mile in my 78 Nova with 3.70 gears and a TH 350 with 30" Hoosiers. If you want the math I was cruising at 7600 rpm in high gear with those Hoosiers and the 3.70 gears. I shifted past 7800 rpm from first to second and second to third. At 7800 I quit looking at the tachometer.. column shifter was stuck and I was trying to shift at 7600.. seen 7800 and still stuck and pulling up .. finally shifted!! Buddy hit 8500 rpm 2 times with it and I did not let him drive it any more. It is loose everywhere.. if it was tight it would have probably came apart. I hit 6500 RPM in third with 29.5" tires on MoBoost dyno with 3.25 gears in my 47 dodge truck.. That was 167 MPH He cringed and said all pulls will now be in second gear for that thing. [/I] [/QUOTE]
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